SN-200A型中氨氮測定的干擾和消除的方式-青島尚德環?？萍加邢薰?/title> <link rel="stylesheet" type="text/css" href="/skins/342860/css/style.css"> <link rel="stylesheet" type="text/css" href="/skins/342860/css/swiper-bundle.min.css"> <script type="text/javascript" src="/skins/342860/js/jquery.min.js"></script> <link rel="shortcut icon" href="/skins/342860/favicon.ico" />  <script type="text/javascript"> document.addEventListener("touchstart", function () { }, true); </script>  <script language="javascript" type="text/javascript"> var nav= '5'; </script>  <script type="application/ld+json"> { "@context": "https://ziyuan.baidu.com/contexts/cambrian.jsonld", "@id": "http://www.wfsjzpx.com/Article-1288968.html", "title": "SN-200A型中氨氮測定的干擾和消除的方式", "pubDate": "2017-06-26T09:30:25", "upDate": "2017-06-26T09:30:25" }</script> <script language="javaScript" src="/js/JSChat.js"></script><script language="javaScript">function ChatBoxClickGXH() { DoChatBoxClickGXH('https://chat.chem17.com',344462) }</script><script> (function(){ var bp = document.createElement('script'); var curProtocol = window.location.protocol.split(':')[0]; if (curProtocol === 'https') { bp.src = 'https://zz.bdstatic.com/linksubmit/push.js'; } else { bp.src = 'http://push.zhanzhang.baidu.com/push.js'; } var s = document.getElementsByTagName("script")[0]; s.parentNode.insertBefore(bp, s); })(); </script> <meta http-equiv="Cache-Control" content="no-transform" /> <meta http-equiv="Cache-Control" content="no-siteapp" /> <script>var V_PATH="/";window.onerror=function(){ return true; };</script> </head> <body> <div style="position:fixed;left:-9000px;top:-9000px;"><noscript id="zu4es"><kbd id="zu4es"><i id="zu4es"><menuitem id="zu4es"></menuitem></i></kbd></noscript><optgroup id="zu4es"><strike id="zu4es"></strike></optgroup><noscript id="zu4es"></noscript><i id="zu4es"></i><b id="zu4es"></b><strong id="zu4es"><form id="zu4es"><output id="zu4es"></output></form></strong><acronym id="zu4es"></acronym><strong id="zu4es"></strong><tr id="zu4es"></tr><menuitem id="zu4es"><xmp id="zu4es"></xmp></menuitem><ruby id="zu4es"><sup id="zu4es"></sup></ruby><table id="zu4es"><small id="zu4es"><dd id="zu4es"><address id="zu4es"></address></dd></small></table><tr id="zu4es"><source id="zu4es"><dl id="zu4es"><ol id="zu4es"></ol></dl></source></tr><ins id="zu4es"></ins><strike id="zu4es"></strike><rp id="zu4es"><strike id="zu4es"><rt id="zu4es"></rt></strike></rp><td id="zu4es"></td><progress id="zu4es"><center id="zu4es"><table id="zu4es"></table></center></progress><source id="zu4es"><option id="zu4es"><rp id="zu4es"><ruby id="zu4es"></ruby></rp></option></source><track id="zu4es"><li id="zu4es"><strike id="zu4es"><p id="zu4es"></p></strike></li></track><td id="zu4es"><span id="zu4es"><track id="zu4es"><video id="zu4es"></video></track></span></td><xmp id="zu4es"></xmp><meter id="zu4es"></meter><video id="zu4es"></video><delect id="zu4es"></delect><rp id="zu4es"><strike id="zu4es"><rt id="zu4es"><button id="zu4es"></button></rt></strike></rp><video id="zu4es"><tr id="zu4es"><source id="zu4es"></source></tr></video><form id="zu4es"></form><ol id="zu4es"></ol><video id="zu4es"><em id="zu4es"><strike id="zu4es"><rt id="zu4es"></rt></strike></em></video><ruby id="zu4es"><sup id="zu4es"><b id="zu4es"></b></sup></ruby><u id="zu4es"></u><track id="zu4es"></track><em id="zu4es"><span id="zu4es"></span></em><address id="zu4es"><nobr id="zu4es"></nobr></address><noframes id="zu4es"><em id="zu4es"><source id="zu4es"><dl id="zu4es"></dl></source></em></noframes><delect id="zu4es"></delect><track id="zu4es"></track><th id="zu4es"><big id="zu4es"></big></th><noscript id="zu4es"><td id="zu4es"></td></noscript><i id="zu4es"></i><delect id="zu4es"></delect><listing id="zu4es"></listing><noframes id="zu4es"></noframes><span id="zu4es"><track id="zu4es"><video id="zu4es"><em id="zu4es"></em></video></track></span><s id="zu4es"><del id="zu4es"></del></s><i id="zu4es"><b id="zu4es"><input id="zu4es"><tt id="zu4es"></tt></input></b></i><meter id="zu4es"></meter><sub id="zu4es"><address id="zu4es"></address></sub><tt id="zu4es"></tt> <menuitem id="zu4es"></menuitem><sub id="zu4es"></sub><ol id="zu4es"><ruby id="zu4es"><p id="zu4es"><i id="zu4es"></i></p></ruby></ol><li id="zu4es"><strike id="zu4es"><pre id="zu4es"></pre></strike></li><progress id="zu4es"></progress><sub id="zu4es"></sub><font id="zu4es"><var id="zu4es"><mark id="zu4es"><menuitem id="zu4es"></menuitem></mark></var></font><form id="zu4es"></form><sup id="zu4es"><b id="zu4es"></b></sup><thead id="zu4es"></thead><button id="zu4es"></button><button id="zu4es"><ruby id="zu4es"><output id="zu4es"><label id="zu4es"></label></output></ruby></button><address id="zu4es"><nobr id="zu4es"></nobr></address><th id="zu4es"></th><bdo id="zu4es"><progress id="zu4es"><sub id="zu4es"></sub></progress></bdo><legend id="zu4es"><video id="zu4es"><rp id="zu4es"><kbd id="zu4es"></kbd></rp></video></legend><table id="zu4es"></table><font id="zu4es"><nav id="zu4es"><code id="zu4es"></code></nav></font><nobr id="zu4es"></nobr><delect id="zu4es"></delect><tbody id="zu4es"><noframes id="zu4es"><form id="zu4es"></form></noframes></tbody><meter id="zu4es"></meter><optgroup id="zu4es"><nobr id="zu4es"></nobr></optgroup><nobr id="zu4es"></nobr><dfn id="zu4es"></dfn><video id="zu4es"></video><xmp id="zu4es"></xmp><ruby id="zu4es"></ruby><delect id="zu4es"><ins id="zu4es"><b id="zu4es"><input id="zu4es"></input></b></ins></delect><listing id="zu4es"></listing><pre id="zu4es"></pre><sub id="zu4es"><address id="zu4es"><nobr id="zu4es"><track id="zu4es"></track></nobr></address></sub><font id="zu4es"><nav id="zu4es"><code id="zu4es"></code></nav></font><dfn id="zu4es"></dfn><mark id="zu4es"></mark><s id="zu4es"><del id="zu4es"></del></s><output id="zu4es"></output><noscript id="zu4es"></noscript><pre id="zu4es"></pre><tt id="zu4es"><label id="zu4es"><cite id="zu4es"><font id="zu4es"></font></cite></label></tt><u id="zu4es"></u><table id="zu4es"><th id="zu4es"><track id="zu4es"><li id="zu4es"></li></track></th></table><li id="zu4es"><strike id="zu4es"></strike></li><strike id="zu4es"><i id="zu4es"><ol id="zu4es"></ol></i></strike><big id="zu4es"><td id="zu4es"></td></big><strike id="zu4es"></strike><td id="zu4es"><span id="zu4es"></span></td><mark id="zu4es"><cite id="zu4es"><menu id="zu4es"><dfn id="zu4es"></dfn></menu></cite></mark><wbr id="zu4es"><legend id="zu4es"></legend></wbr><del id="zu4es"><tt id="zu4es"><label id="zu4es"></label></tt></del> <ruby id="zu4es"><sup id="zu4es"><s id="zu4es"></s></sup></ruby><p id="zu4es"><i id="zu4es"></i></p><meter id="zu4es"><thead id="zu4es"><dfn id="zu4es"><table id="zu4es"></table></dfn></thead></meter><tt id="zu4es"></tt><listing id="zu4es"><meter id="zu4es"><dd id="zu4es"></dd></meter></listing><p id="zu4es"><dl id="zu4es"></dl></p><legend id="zu4es"></legend><progress id="zu4es"><center id="zu4es"><form id="zu4es"><th id="zu4es"></th></form></center></progress><ins id="zu4es"></ins><u id="zu4es"><ins id="zu4es"></ins></u><progress id="zu4es"><center id="zu4es"><table id="zu4es"><th id="zu4es"></th></table></center></progress><nobr id="zu4es"></nobr><menuitem id="zu4es"></menuitem><del id="zu4es"></del><button id="zu4es"><tr id="zu4es"><p id="zu4es"><i id="zu4es"></i></p></tr></button><meter id="zu4es"></meter><div id="zu4es"></div><u id="zu4es"></u><em id="zu4es"></em><menu id="zu4es"><dfn id="zu4es"></dfn></menu><dd id="zu4es"></dd><optgroup id="zu4es"><bdo id="zu4es"><th id="zu4es"></th></bdo></optgroup><blockquote id="zu4es"></blockquote><blockquote id="zu4es"></blockquote><acronym id="zu4es"></acronym><video id="zu4es"><rp id="zu4es"><kbd id="zu4es"></kbd></rp></video><listing id="zu4es"></listing><mark id="zu4es"><cite id="zu4es"><xmp id="zu4es"></xmp></cite></mark><dl id="zu4es"></dl><table id="zu4es"><th id="zu4es"><track id="zu4es"><li id="zu4es"></li></track></th></table><track id="zu4es"><li id="zu4es"><strike id="zu4es"></strike></li></track><div id="zu4es"><track id="zu4es"></track></div><dfn id="zu4es"></dfn><nobr id="zu4es"></nobr><span id="zu4es"><track id="zu4es"></track></span><meter id="zu4es"></meter><var id="zu4es"></var><sub id="zu4es"><table id="zu4es"><th id="zu4es"></th></table></sub><b id="zu4es"><del id="zu4es"><output id="zu4es"><ins id="zu4es"></ins></output></del></b><code id="zu4es"><blockquote id="zu4es"></blockquote></code><ins id="zu4es"><b id="zu4es"><cite id="zu4es"><delect id="zu4es"></delect></cite></b></ins><samp id="zu4es"><input id="zu4es"><var id="zu4es"><dfn id="zu4es"></dfn></var></input></samp><delect id="zu4es"><var id="zu4es"><code id="zu4es"><blockquote id="zu4es"></blockquote></code></var></delect><noframes id="zu4es"></noframes><blockquote id="zu4es"></blockquote><em id="zu4es"><span id="zu4es"></span></em><var id="zu4es"><code id="zu4es"><blockquote id="zu4es"></blockquote></code></var><track id="zu4es"><noframes id="zu4es"><em id="zu4es"><source id="zu4es"></source></em></noframes></track><u id="zu4es"><sup id="zu4es"><b id="zu4es"><cite id="zu4es"></cite></b></sup></u><i id="zu4es"></i></div>  <div id="ioqiokm" class="ly_headtop"> <div id="mekqaey" class="lyht_main"> <div id="ksyqkgy" class="lyht_fl">歡迎來到<a href="/">青島尚德環保科技有限公司</a>！</div> <div id="owoicaq" class="lyht_fr"><a href="/">返回首頁</a><em></em><a href="/order.html" rel="nofollow">在線留言</a><em></em><a href="/contact.html" rel="nofollow">聯系我們</a></div> <div id="gwyskqq" class="clear"></div> </div> </div>   <div id="oswiucs" class="ly_top"> <div id="iykwouk" class="lytop_main"> <div id="ymqqsyw" class="ly_logo"><a href="/"><img src="/skins/342860/images/logo.jpg" alt="青島尚德環?？萍加邢薰?/></a></div> <div id="ckuwyoc" class="ly_tel"> <span>咨詢熱線</span> <p>13045002690</p> </div>  <div id="yooiuiq" class="ly_nav">  <div id="wuoaciy" class="nav_menu"> <span></span> <span></span> <span></span> </div>  <div id="wmyquai" class="nav_list"> <ul> <li id="navId1"><a href="/">網站首頁</a></li> <li id="navId2"><a href="/aboutus.html" rel="nofollow">關于我們</a>   </li> <li id="navId3"><a href="/products.html">產品中心</a></li> <li id="navId4"><a href="/news.html">新聞中心</a></li> <li id="navId5"><a href="/article.html">技術文章</a></li> <li id="navId6"><a href="/order.html" rel="nofollow">在線留言</a></li> <li id="navId7"><a href="/contact.html" rel="nofollow">聯系我們</a></li> </ul> <div id="ywyqkyg" class="nav_mask"></div> </div> </div>  <div id="aqimmuq" class="clear"></div> </div> </div> <script language="javascript" type="text/javascript"> try { document.getElementById("navId" + nav).className = "active"; } catch (e) {} </script> <script type="text/javascript"> $('.nav_mask').click(function(){ $('.nav_list').removeClass('open') }) $('.nav_menu,.nav_list').click(function(e){ e.stopPropagation(); }) $('.ly_nav').find('.nav_menu').click(function(e){ $('.nav_list').toggleClass('open') }) $(function () { $(".nav_list ul li i").click(function(){ var b=false; if($(this).attr("class")=="cur"){ b=true; } $(".nav_list ul li ul").prev("i").removeClass("cur"); $(".nav_list>ul>li").children("ul").slideUp("fast"); if(!b){ $(this).addClass("cur"); $(this).siblings("ul").slideDown("fast"); } }) }); </script>   <div id="siaumcs" class="ny_banner"><img src="/skins/342860/images/ny_banner1.jpg" /></div>   <div id="gwqqkqy" class="ly_hotkw_search"> <div id="oumgqwe" class="hotkw_search"> <div id="ckmoyws" class="hotkw_left"><span>熱門關鍵詞：</span>COD恒溫加熱器,紅外測油儀,COD檢測儀,多參數水質檢測儀,水質硫化物酸化吹氣儀,BOD測定儀,土壤有機碳恒溫加熱器,液液萃取器,COD消解回流儀,水質采樣器</div> <div id="kiamgea" class="search_right"> <form action="/products.html" method="post" onsubmit="return checkFrom(this);"> <div id="ywgssao" class="sc_ipt"><input type="text" name="keyword" placeholder="請輸入產品名稱" maxlength="50" /></div> <div id="wmwqaio" class="sc_btn"><input type="submit" value="搜索" /></div> <div id="gooikye" class="clear"></div> </form> </div> <div id="ougqsoe" class="clear"></div> </div> </div>  <script src="http://www.chem17.com/mystat.aspx?u=sunde17"></script>  <div id="agacmcq" class="ly_crumb"> <img src="/skins/342860/images/crumb_icon.png" /><p>當前位置：<a href="/">首頁</a> > <a href="/article.html">技術文章</a> > <span>SN-200A型中氨氮測定的干擾和消除的方式</span></p> </div>   <div id="ioacukg" class="ly_NyNewsdetail"> <h1 class="NyNewsdetail_title">SN-200A型中氨氮測定的干擾和消除的方式</h1> <div id="mcmwyoc" class="NyNewsdetail_tips">更新時間：2017-06-26 點擊次數：2081</div> <div id="igyimig" class="NyNewsdetail_con"> <ul style="list-style-type:square"><li><span style="font-size:14px"><strong>SN-200A型中氨氮測定的干擾和消除的方式</strong></span></li><li><span style="font-size:14pt"><span style="font-family:times new roman"><span style="font-size:10.5000pt"><span style="font-family:times new roman">1.樣品中含有懸浮物、余氯、鈣鎂等金屬離子、硫化物和有機物時，對比色測定有干擾，處理方法如下：</span></span></span></span></li><li><span style="font-size:14pt"><span style="font-family:times new roman"><span style="font-size:10.5000pt"><span style="font-family:times new roman"><span style="font-size:10.5000pt"><span style="font-family:times new roman">⑴</span></span> <span style="font-size:10.5000pt"><span style="font-family:times new roman">除余氯</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">:</span></span></span></span></span></span></li><li><span style="font-size:14pt"><span style="font-family:times new roman"><span style="font-size:10.5000pt"><span style="font-family:times new roman"><span style="font-size:10.5000pt"><span style="font-family:times new roman"><span style="font-size:10.5000pt"><span style="font-family:times new roman">加入適量的硫代硫酸鈉溶液（</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">0.35</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">％），每</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">0.5mL</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">可除去</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">0.25mg</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">余氯。也可用淀粉</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">-</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">碘化鉀檢驗是否除盡。</span></span></span></span></span></span></span></span></li></ul><p style="margin-left:21.0000pt"><span style="font-size:10.5000pt"><span style="font-family:times new roman"> ⑵</span></span> <span style="font-size:10.5000pt"><span style="font-family:times new roman">凝聚沉淀</span></span></p><p style="margin-left:21.0000pt"><span style="font-size:10.5000pt"><span style="font-family:times new roman"> </span></span><span style="font-size:10.5pt; line-height:1.6em"><span style="font-family:times new roman">取</span></span><span style="font-size:10.5pt; line-height:1.6em"><span style="font-family:times new roman">100ml</span></span><span style="font-size:10.5pt; line-height:1.6em"><span style="font-family:times new roman">水樣加入</span></span><span style="font-size:10.5pt; line-height:1.6em"><span style="font-family:times new roman">1 ml 10%</span></span><span style="font-size:10.5pt; line-height:1.6em"><span style="font-family:times new roman">硫酸鋅溶液和</span></span><span style="font-size:10.5pt; line-height:1.6em"><span style="font-family:times new roman">0.1</span></span><span style="font-size:10.5pt; line-height:1.6em"><span style="font-family:times new roman">～</span></span><span style="font-size:10.5pt; line-height:1.6em"><span style="font-family:times new roman">0.2ml 25%</span></span><span style="font-size:10.5pt; line-height:1.6em"><span style="font-family:times new roman">氫氧化鈉溶液，調節</span></span><span style="font-size:10.5pt; line-height:1.6em"><span style="font-family:times new roman">pH</span></span><span style="font-size:10.5pt; line-height:1.6em"><span style="font-family:times new roman">值至</span></span><span style="font-size:10.5pt; line-height:1.6em"><span style="font-family:times new roman">10.5</span></span><span style="font-size:10.5pt; line-height:1.6em"><span style="font-family:times new roman">左右，混勻。放置使其沉淀，用經無氨水充分洗滌過的中速濾紙過濾，棄去初濾液</span></span><span style="font-size:10.5pt; line-height:1.6em"><span style="font-family:times new roman">20ml</span></span><span style="font-size:10.5pt; line-height:1.6em"><span style="font-family:times new roman">。</span></span></p><p style="margin-left:21.0000pt"><span style="font-size:10.5000pt"><span style="font-family:times new roman">⑶</span></span> <span style="font-size:10.5000pt"><span style="font-family:times new roman">絡合掩蔽</span></span></p><p style="margin-left:21.0000pt"><span style="font-size:10.5000pt"><span style="font-family:times new roman">加入酒石酸鉀鈉溶液，可消除</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">鈣鎂等金屬離子的干擾。</span></span></p><p><span style="font-size:10.5000pt"><span style="font-family:times new roman"> ⑷</span></span> <span style="font-size:10.5000pt"><span style="font-family:times new roman">蒸餾法</span></span></p><p style="margin-left:44.9500pt"><span style="font-size:10.5000pt"><span style="font-family:times new roman">用凝聚沉淀和</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">絡合掩蔽后，樣品仍渾濁和帶色，則采用蒸餾法。</span></span></p><p style="margin-left:44.9500pt"><span style="font-size:10.5pt; line-height:1.6em"><span style="font-family:times new roman">調節水樣的</span></span><span style="font-size:10.5pt; line-height:1.6em"><span style="font-family:times new roman">pH</span></span><span style="font-size:10.5pt; line-height:1.6em"><span style="font-family:times new roman">使在</span></span><span style="font-size:10.5pt; line-height:1.6em"><span style="font-family:times new roman">6.0-7.4</span></span><span style="font-size:10.5pt; line-height:1.6em"><span style="font-family:times new roman">的范圍，加入適量氧化鎂使呈微堿性，蒸餾釋出的氨被吸收于硼酸溶液中。</span></span></p><p style="margin-left:44.9500pt"><span style="font-size:10.5pt; line-height:1.6em"><span style="font-family:times new roman">1</span></span><span style="font-size:10.5pt; line-height:1.6em"><span style="font-family:times new roman">）蒸餾裝置：由</span></span><span style="font-size:10.5pt; line-height:1.6em"><span style="font-family:times new roman">500ml</span></span><span style="font-size:10.5pt; line-height:1.6em"><span style="font-family:times new roman">凱氏燒瓶及防噴頭和一個垂直放置的直形冷凝管組裝而成。冷凝管末端可連接一適當長度的滴管，使出口浸入吸收液液面下約</span></span><span style="font-size:10.5pt; line-height:1.6em"><span style="font-family:times new roman">2cm</span></span><span style="font-size:10.5pt; line-height:1.6em"><span style="font-family:times new roman">。</span></span></p><p style="margin-left:17.9500pt"><span style="font-size:10.5000pt"><span style="font-family:times new roman"> 2</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">）</span></span> <span style="font-size:10.5000pt"><span style="font-family:times new roman">試劑：</span></span></p><ul style="list-style-type:square"><li><span style="font-size:10.5000pt"><span style="font-family:times new roman">硼酸吸收液：</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">20g/L</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">溶液</span></span></li><li><span style="font-size:10.5000pt"><span style="font-family:times new roman">1mol/L</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">鹽酸溶液</span></span></li><li><span style="font-size:10.5000pt"><span style="font-family:times new roman">氫氧化鈉溶液：</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">40g/L</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">溶液</span></span></li><li><span style="font-size:10.5000pt"><span style="font-family:times new roman">輕質氧化鎂（</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">MgO</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">）：將氧化鎂在</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">500</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">℃下加熱，以除去碳酸鹽。</span></span></li><li><span style="font-size:10.5000pt"><span style="font-family:times new roman">0.05%</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">溴百里酚藍指示液（</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">pH6.0-7.6</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">）</span></span></li><li><span style="font-size:10.5000pt"><span style="font-family:times new roman">防沫劑，如石臘碎片</span></span></li></ul><p style="margin-left:48.0000pt"><span style="font-size:10.5000pt"><span style="font-family:times new roman">3</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">）</span></span> <span style="font-size:10.5000pt"><span style="font-family:times new roman">步驟：</span></span></p><ul style="list-style-type:square"><li><span style="font-size:10.5000pt"><span style="font-family:times new roman">蒸餾裝置的預處理：加</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">250ml</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">水于凱氏燒瓶中，加</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">0</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">．</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">25g</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">輕質氧化鎂和數粒玻璃珠，加熱蒸餾，至餾出液不含氮為止，棄去瓶內殘液。</span></span></li><li><span style="font-size:10.5000pt"><span style="font-family:times new roman">將</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">50mL</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">硼酸吸收液移入接收并內，確保冷凝管出口在硼酸溶液液面之下。</span></span></li><li><span style="font-size:10.5000pt"><span style="font-family:times new roman">分取</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">250ml</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">水樣（如氨氮含量較高，可分取適量并加水至</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">250ml</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">，使氨氮含量不超過</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">2.5mg</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">），移入凱氏燒瓶中，加數滴溴百里酚藍指示液，用氫氧化鈉溶液或鹽酸溶液調節至</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">pH7</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">左右。加入</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">0.25g</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">輕質氧化鎂和數粒玻璃珠，立即連接氮球和冷凝管，導管下端插入吸收液液面下。加熱蒸餾，至餾出液達</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">200ml</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">時，停止蒸餾。定容至</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">250ml</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">。</span></span></li></ul><p><span style="font-size:10.5000pt"><span style="font-family:times new roman">4</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">）</span></span> <span style="font-size:10.5000pt"><span style="font-family:times new roman">注意事項</span></span></p><ul style="list-style-type:square"><li><span style="font-size:10.5000pt"><span style="font-family:times new roman">蒸餾時應避免發生暴沸，否則可造成餾出液溫度升高，氨吸收不*。</span></span></li><li><span style="font-size:10.5000pt"><span style="font-family:times new roman">防止在蒸餾時產生泡沫，必要時可加入少許石蠟碎片于凱氏燒瓶中。</span></span></li><li><span style="font-size:10.5000pt"><span style="font-family:times new roman"><span style="font-size:10.5000pt"><span style="font-family:times new roman">5</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">）</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">低</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">pH</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">下煮沸</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">蒸餾時，某些有機物很可能與氨同時被餾出，對測定仍有干擾，其中有些物質（如甲醛）可在比色前于低</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">pH</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">下采用煮沸而除之。</span></span></span></span></li><li><strong><span style="font-size:14pt"><span style="font-family:times new roman">水樣的保</span></span></strong></li><li><strong><span style="font-size:14pt"><span style="font-family:times new roman"><span style="font-size:10.5000pt"><span style="font-family:times new roman">水樣采集在聚乙烯瓶或玻璃瓶內，并應盡快分析，必要時可加硫酸將水樣酸化至</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">pH</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">＜</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">2</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">，于</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">2</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">～</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">5</span></span><span style="font-size:10.5000pt"><span style="font-family:times new roman">℃下存放。酸化樣品應注意防止吸收空氣中的氨而遭致污染。</span></span></span></span></strong></li></ul> </div> <div id="wcoqqgu" class="ly_PrevNext"> <ul> <li>上一篇：<a href="/Article-1291118.html">SN-870H智能型BOD測定儀的檢測原理</a></li> <li>下一篇：<a href="/Article-1288926.html">SN-200A 型多參數檢測儀中COD的注意事項</a></li> </ul> </div> </div>   <div id="aoyicig" class="ly_foot"> <div id="okmwigu" class="ly_Ftmain"> <div id="uqkcgca" class="ly_FtLeft"> <div id="usseomu" class="Ft_nav"><a href="/">首頁</a><a href="/aboutus.html" rel="nofollow">關于我們</a><a href="/products.html">產品展示</a><a href="/news.html">新聞中心</a><a href="/article.html">技術文章</a></div> <div id="euwgige" class="Ft_contact"> <div id="wmeyqoe" class="Ftcont_tit">聯系方式<em></em></div> <p>郵箱：qdsunde@qq.com</p> <p>地址：山東省青島市李滄區源頭路4號</p> </div> </div> <div id="oeqkuky" class="ly_FtCenter"> <p>咨詢熱線</p> <b>13045002690</b> <p>（周一至周日9:00- 19:00）</p> <a class="online-contact-btn" target="_blank">在線咨詢</a> </div> <div id="ywqausg" class="ly_FtRight"> <ul> <li><img src="/skins/342860/images/ewm1.jpg" /><p>微信公眾號</p></li> <li><img src="/skins/342860/images/ewm2.jpg" /><p>移動端瀏覽</p></li> </ul> </div> <div id="agasuka" class="clear"></div> </div> <div id="sskmoec" class="ly_FtBottom"> <div id="emoysig" class="FtBottom_mid"> <div id="kqqsmsi" class="Ft_Copy">Copyright©2025 青島尚德環?？萍加邢薰?All Right Reserved <a target="_blank" rel="nofollow">備案號：</a> <a href="/sitemap.xml" target="_blank">sitemap.xml</a></div> <div id="wmeqqoe" class="Ft_Supp">技術支持：<a target="_blank" rel="nofollow">化工儀器網</a> <A target="_blank" rel="nofollow">管理登陸</A></div> <div id="igiaekg" class="clear"></div> </div> </div> </div>   <div id="cikwgmc" class="client-2"> <ul id="client-2"> <li id="gmoakiy" class="my-kefu-liuyan"> <div id="iyqkkiy" class="my-kefu-main"> <div id="kiacwsi" class="my-kefu-left"><a class="online-contact-btn" rel="nofollow" target="_blank"><i></i><p>QQ咨詢</p></a></div> <div id="ayacekq" class="my-kefu-right"></div> </div> </li> <li id="ymwiagw" class="my-kefu-tel" style="height:0; margin:0; overflow:hidden;"> <div id="igikeui" class="my-kefu-tel-main"> <div id="qoiimiy" class="my-kefu-left"><a href="tel:13045002690"><i></i><p>電話</p></a></div> <div id="esegiek" class="my-kefu-tel-right">13045002690</div> </div> </li> <li id="ioaseiq" class="my-kefu-tel my-kefu-tel1" style="height:0; margin:0; overflow:hidden;"> <div id="uicuwmc" class="my-kefu-tel-main"> <div id="qgiacsg" class="my-kefu-left"><a href="tel:13045002690"><i></i><p>電話</p></a></div> <div id="kqumoeu" class="my-kefu-tel-right">13045002690</div> </div> </li> <li id="eceoqou" class="my-kefu-weixin"> <div id="soqcwuq" class="my-kefu-main"> <div id="sqscems" class="my-kefu-left"><i></i><p>微信掃一掃</p></div> <div id="gwwyaiw" class="my-kefu-right"> </div> <div id="ksceyuk" class="my-kefu-weixin-pic"><img src="/skins/342860/images/ewm1.jpg"> </div> </div> </li> <li id="kaccgca" class="my-kefu-ftop"> <div id="sqkegcs" class="my-kefu-main"> <div id="iwqkmci" class="my-kefu-left"><a href="javascript:;"><i></i><p>返回頂部</p></a> </div> <div id="sgsceua" class="my-kefu-right"> </div> </div> </li> </ul> </div>  <script type="text/javascript" src="/skins/342860/js/qq.js"></script> <script type='text/javascript' src='/js/VideoIfrmeReload.js?v=001'></script> </html> <a href="http://www.wfsjzpx.com/">最近国语视频免费观看在线播放</a> <table id="table1" height="15" cellSpacing="0" cellPadding="0" width="90%" border="0" style="font-size: 12px; cursor: default; color: buttontext"> <caption><font color="#5AFF63"><marquee onmouseover="this.scrollAmount=0" onmouseout="this.scrollAmount=1" scrollAmount="1" scrollDelay="1" direction="up" width="100%" height="3"> </table> <script> (function(){ var bp = document.createElement('script'); var curProtocol = window.location.protocol.split(':')[0]; if (curProtocol === 'https') { bp.src = 'https://zz.bdstatic.com/linksubmit/push.js'; } else { bp.src = 'http://push.zhanzhang.baidu.com/push.js'; } var s = document.getElementsByTagName("script")[0]; s.parentNode.insertBefore(bp, s); })(); </script> </body>