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src="http://www.chem17.com/mystat.aspx?u=sunde17"></script>  <div id="pnp7xp9" 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>COD實驗中多種不同濃度水樣的測定</span></p> </div>   <div id="z99vh1n" class="ly_NyNewsdetail"> <h1 class="NyNewsdetail_title">COD實驗中多種不同濃度水樣的測定</h1> <div id="b91vp91" class="NyNewsdetail_tips">更新時間：2017-06-05 點擊次數：1645</div> <div id="9fljl9p" class="NyNewsdetail_con"> <p><span style="color:#000000"><span style="font-size:18px"><span style="font-family:宋體">多種不同濃度水樣的測定：</span></span></span></p><p><span style="color:#000000"><span style="font-size:18px"><span style="font-family:宋體"> 很多用戶尤其是科研單位、大型企業用戶，時常會發現一個問題，就是用同一個曲線來測定不同成份的廢水時會存在差別，看似像系統誤差。以前我們的解決辦法是，將儀器所測定的結果直接乘以一個校正系數，然后再記錄下來作為測定數據，這樣做非常麻煩。</span></span></span></p><p><span style="color:#000000"><span style="font-size:18px"><span style="font-family:宋體"> 當遇到這樣的問題，可直接應用我們為用戶提供的備用曲線，即可輕松解決這個問題。</span></span></span></p><p> </p><p><span style="color:#000000"><span style="font-size:18px"><span style="font-family:宋體">例如：一個藥廠的污水處理廠，在污水處理的各個環節濃度差別很大，假設在測定之前需要分別進行稀釋</span><span style="font-family:times new roman">20</span><span style="font-family:宋體">、</span><span style="font-family:times new roman">10</span><span style="font-family:宋體">、</span><span style="font-family:times new roman">5</span><span style="font-family:宋體">、</span><span style="font-family:times new roman">2 </span><span style="font-family:宋體">倍后測定，那么怎樣來靈活應用儀器來進行測定呢？</span></span></span></p><p><span style="color:#000000"><span style="font-size:18px"><span style="font-family:times new roman">① </span><span style="font-family:宋體">假設選擇、定義</span><span style="font-family:times new roman"> 11</span><span style="font-family:宋體">、</span><span style="font-family:times new roman">12</span><span style="font-family:宋體">、</span><span style="font-family:times new roman">13</span><span style="font-family:宋體">、</span><span style="font-family:times new roman">14 </span><span style="font-family:宋體">號曲線分別指向</span><span style="font-family:times new roman"> 20</span><span style="font-family:宋體">、</span><span style="font-family:times new roman">10</span><span style="font-family:宋體">、</span><span style="font-family:times new roman">5</span><span style="font-family:宋體">、</span><span style="font-family:times new roman">2 </span><span style="font-family:宋體">的稀釋倍數；</span></span></span></p><p><span style="color:#000000"><span style="font-size:18px"><span style="font-family:times new roman">② </span><span style="font-family:宋體">計算出分別乘以各稀釋倍數后的曲線數值。假設稀釋前的曲線值為</span><span style="font-family:times new roman"> 1505</span><span style="font-family:宋體">，那么稀釋</span><span style="font-family:times new roman"> 20 </span><span style="font-family:宋體">倍的曲線值為</span><span style="font-family:times new roman">30100</span><span style="font-family:宋體">。因為儀器的曲線數值修改范圍在</span><span style="font-family:times new roman"> 0.001-9999 </span><span style="font-family:宋體">之間</span><span style="font-family:times new roman">, </span><span style="font-family:宋體">這樣可以將第</span><span style="font-family:times new roman"> 11 </span><span style="font-family:宋體">條曲線修改為</span><span style="font-family:times new roman"> 30.1</span><span style="font-family:宋體">，測定出的結果應將單位由</span><span style="font-family:times new roman">“mg/L”</span><span style="font-family:宋體">換為</span><span style="font-family:times new roman">“g/L”</span><span style="font-family:宋體">；</span></span></span></p><p><span style="color:#000000"><span style="font-size:18px"><span style="font-family:times new roman">③ </span><span style="font-family:宋體">同上面的方法，第</span><span style="font-family:times new roman"> 12 </span><span style="font-family:宋體">條曲線改為</span><span style="font-family:times new roman"> 15.5</span><span style="font-family:宋體">，測定出的結果應將單位由</span><span style="font-family:times new roman">“mg/L”</span><span style="font-family:宋體">換為</span><span style="font-family:times new roman">“g/L”</span><span style="font-family:宋體">；</span></span></span></p><p><span style="color:#000000"><span style="font-size:18px"><span style="font-family:times new roman">④ </span><span style="font-family:宋體">第</span><span style="font-family:times new roman"> 13 </span><span style="font-family:宋體">條曲線為</span><span style="font-family:times new roman"> 7525</span><span style="font-family:宋體">，第</span><span style="font-family:times new roman"> 14 </span><span style="font-family:宋體">條曲線為</span><span style="font-family:times new roman"> 3010</span><span style="font-family:宋體">，測定出的結果單位是</span><span style="font-family:times new roman">“mg/L”</span><span style="font-family:宋體">；</span></span></span></p><p><span style="color:#000000"><span style="font-size:18px"><span style="font-family:times new roman">⑤ </span><span style="font-family:宋體">以后再進行測定不同的排放口水樣的時候，直接選擇不同的曲線測定即可。</span></span></span></p> </div> <div id="frj1jhh" class="ly_PrevNext"> <ul> <li>上一篇：<a href="/Article-1274352.html">COD實驗中相對偏差的校準</a></li> 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