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class="NyNewsdetail_title">COD氨氮測(cè)定儀的注意事項(xiàng)</h1> <div id="wowgyyywegmg" class="NyNewsdetail_tips">更新時(shí)間：2022-03-01 點(diǎn)擊次數(shù)：1105</div> <div id="wowgyyywegmg" class="NyNewsdetail_con"> <p><strong style="-webkit-tap-highlight-color: transparent; appearance: none; margin: 0px; color: rgb(51, 51, 51); font-family: "microsoft yahei"; white-space: normal; background-color: rgb(255, 255, 255);">COD氨氮測(cè)定儀</strong><span style="color: rgb(51, 51, 51); font-family: "microsoft yahei"; background-color: rgb(255, 255, 255);">可直接測(cè)定COD及氨氮，COD是利用密封催化消解，然后進(jìn)行比色法測(cè)量。氨氮是采用納氏比色法進(jìn)行測(cè)定。</span><br data-filtered="filtered" style="-webkit-tap-highlight-color: transparent; appearance: none; margin: 0px; color: rgb(51, 51, 51); font-family: "microsoft yahei"; white-space: normal; background-color: rgb(255, 255, 255);"/><br data-filtered="filtered" style="-webkit-tap-highlight-color: transparent; appearance: none; margin: 0px; color: rgb(51, 51, 51); font-family: "microsoft yahei"; white-space: normal; background-color: rgb(255, 255, 255);"/></p><div style="-webkit-tap-highlight-color: transparent; appearance: none; margin: 0px; padding: 0px; list-style: none; border: 0px; color: rgb(51, 51, 51); font-family: "microsoft yahei"; white-space: normal; background-color: rgb(255, 255, 255);">1.減少樣品在檢測(cè)時(shí)的相互影響，空白、標(biāo)樣、樣品的消解管及管蓋應(yīng)固定，以提高檢測(cè)的準(zhǔn)確性，減少操作帶來的誤差。<br data-filtered="filtered" style="-webkit-tap-highlight-color: transparent; appearance: none; margin: 0px;"/> </div><div style="-webkit-tap-highlight-color: transparent; appearance: none; margin: 0px; padding: 0px; list-style: none; border: 0px; color: rgb(51, 51, 51); font-family: "microsoft yahei"; white-space: normal; background-color: rgb(255, 255, 255);">2.COD消解為密閉消解，消解前應(yīng)上下倒置搖勻，如有漏液，則不能放入消解儀中，消解時(shí)必須旋緊消解管蓋，以免漏出腐蝕儀器。<br data-filtered="filtered" style="-webkit-tap-highlight-color: transparent; appearance: none; margin: 0px;"/> </div><div style="-webkit-tap-highlight-color: transparent; appearance: none; margin: 0px; padding: 0px; list-style: none; border: 0px; color: rgb(51, 51, 51); font-family: "microsoft yahei"; white-space: normal; background-color: rgb(255, 255, 255);">3.根據(jù)被測(cè)樣品的濃度值大小，應(yīng)選用相對(duì)應(yīng)的標(biāo)準(zhǔn)曲線。 <br data-filtered="filtered" style="-webkit-tap-highlight-color: transparent; appearance: none; margin: 0px;"/> </div><div style="-webkit-tap-highlight-color: transparent; appearance: none; margin: 0px; padding: 0px; list-style: none; border: 0px; color: rgb(51, 51, 51); font-family: "microsoft yahei"; white-space: normal; background-color: rgb(255, 255, 255);">4.由于氧化劑內(nèi)含有氯離子掩蔽劑，消解后可能會(huì)有少量沉淀，比色時(shí)，不要搖動(dòng)消解比色管以免沉淀上浮，造成結(jié)果偏差。<br data-filtered="filtered" style="-webkit-tap-highlight-color: transparent; appearance: none; margin: 0px;"/><br data-filtered="filtered" style="-webkit-tap-highlight-color: transparent; appearance: none; margin: 0px;"/>5.一般情況下，標(biāo)準(zhǔn)曲線的相關(guān)系數(shù)r值應(yīng)在0.990以上，如果所標(biāo)定的標(biāo)準(zhǔn)曲線的r值低于0.990，說明標(biāo)準(zhǔn)配制有問題或比色操作不規(guī)范，應(yīng)仔細(xì)分析，逐一排除。 <br data-filtered="filtered" style="-webkit-tap-highlight-color: transparent; appearance: none; margin: 0px;"/> </div><div style="-webkit-tap-highlight-color: transparent; appearance: none; margin: 0px; padding: 0px; list-style: none; border: 0px; color: rgb(51, 51, 51); font-family: "microsoft yahei"; white-space: normal; background-color: rgb(255, 255, 255);">6.消解比色管必須保持潔凈，避免用手觸及透光面，管子置入比色計(jì)前如管外壁掛有溶液，應(yīng)用吸水性強(qiáng)的軟紙擦拭干凈，以免造成零點(diǎn)漂移及腐蝕儀器。 <br data-filtered="filtered" style="-webkit-tap-highlight-color: transparent; appearance: none; margin: 0px;"/> </div><div style="-webkit-tap-highlight-color: transparent; appearance: none; margin: 0px; padding: 0px; list-style: none; border: 0px; color: rgb(51, 51, 51); font-family: "microsoft yahei"; white-space: normal; background-color: rgb(255, 255, 255);">7.實(shí)驗(yàn)中所用試劑皆為強(qiáng)酸，切勿直接接觸防止意外燒傷。消解時(shí)，切記罩上防護(hù)罩，以免發(fā)生意外造成對(duì)儀器及操作者的傷害。</div><p><br/></p><p><br/></p><p style="text-align: right;">想要了解有關(guān)COD氨氮測(cè)定儀請(qǐng)聯(lián)系我們：河南綏凈環(huán)?？萍加邢薰?/p> </div> <div id="wowgyyywegmg" class="ly_PrevNext"> <ul> <li>上一篇：<a href="/Article-2935854.html">總磷測(cè)定儀的檢測(cè)原理</a></li> <li>下一篇：<a href="/Article-2935596.html">COD測(cè)定儀的波長和范圍</a></li> </ul> </div> </div>   <div id="wowgyyywegmg" class="ly_foot"> <div id="wowgyyywegmg" class="ly_Ftmain"> <div id="wowgyyywegmg" class="ly_FtLeft"> <div id="wowgyyywegmg" class="Ft_nav"><a href="/">首頁</a><a href="/aboutus.html" target="_blank" rel="nofollow">關(guān)于我們</a><a href="/products.html" target="_blank">產(chǎn)品展示</a><a href="/news.html" target="_blank">新聞中心</a><a href="/article.html" target="_blank">技術(shù)文章</a><a href="/honor.html" target="_blank" rel="nofollow">榮譽(yù)資質(zhì)</a></div> <div id="wowgyyywegmg" class="Ft_contact"> <div id="wowgyyywegmg" 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