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id="submenu_德國(guó)WTW水質(zhì)分析儀" style="display:none"> <ul class="two_profl"> <li><a href="/SonList-1157181.html">PH電極</a></li> </ul> </div> </li> </ul> </div> </div> <div id="0rcxmf0" class="nymiddlezty"> <div id="zw3nwoq" class="mianbao">您現(xiàn)在的位置：<a href="/">首頁</a> > <a href="/article.html">技術(shù)文章</a> > 余氯總氯測(cè)量方法DPD法</div> <div id="kgdhqkw" class="about_con"> <h1 class="newstit">余氯總氯測(cè)量方法DPD法</h1> <div id="gljk5d4" class="newstime"> <span id="wb4d0wy" class="skim"><em>瀏覽次數(shù)：</em>3272</span><span id="a4gat43" class="skimtim"><em>發(fā)布日期：</em>2012-06-03 </span> </div> <div style="text-align: center"><strong><font size="2">余氯總氯測(cè)量方法DPD法</font></strong><font size="2"><br /></font></div><div style="text-align: left">氯消毒劑是目前普遍使用的消毒劑，在自來水、游泳池和餐具等的消毒中被廣泛使用。但是含氯消毒劑在消毒的同時(shí)會(huì)產(chǎn)生多種副產(chǎn)物，因此經(jīng)氯化消毒的水質(zhì)安全性日益受到人們的關(guān)注。余氯含量是評(píng)定水消毒效果的一個(gè)重要指標(biāo)。為抑制水中殘留細(xì)菌、病毒等微生物的再度繁殖，水經(jīng)過含氯消毒劑消毒一段時(shí)間后，應(yīng)有適量余氯在水中，以保證持續(xù)的殺菌能力。但是當(dāng)余氯含量過高時(shí)，容易引起水質(zhì)第二次污染，常引發(fā)致癌物質(zhì)的產(chǎn)生，引起溶血性貧血等，對(duì)人類健康有一定的危害作用。因此，有效地控制和檢測(cè)余氯含量在供水處理中至關(guān)重要。<br /> </div><p><font size="2">水中余氯、總氯的測(cè)定，過去廣泛使用的是鄰聯(lián)甲苯胺法和碘量法，這些方法操作繁瑣，分析周期長(zhǎng)（需專業(yè)技術(shù)人員），無法滿足對(duì)水質(zhì)進(jìn)行快速、即需即檢的要求，不適合于現(xiàn)場(chǎng)分析；而且，由于鄰聯(lián)甲苯胺試劑有致癌性，所以在中華人民共和國(guó)衛(wèi)生部2001年6月頒布的《生活飲用水衛(wèi)生規(guī)范》中的余氯檢測(cè)方法已去掉鄰聯(lián)甲苯胺法，代之以DPD分光光度法。</font></p><p style="line-height: 150%; margin-top: 0px; margin-bottom: 0px"><font size="2">氯在水中存在的幾種形式：</font></p><p style="line-height: 150%; margin-top: 0px; margin-bottom: 0px"><font size="2">余氯（游離氯）：以次氯酸、次氯酸根或溶解元素氯形式存在的氯。</font></p><p style="line-height: 150%; margin-top: 0px; margin-bottom: 0px"><font size="2">化合氯：以氯胺和有機(jī)氯胺形式存在的氯。</font></p><p style="line-height: 150%; margin-top: 0px; margin-bottom: 0px"><font size="2">總氯：以游離余氯或化合氯或兩者并存的形式存在的氯。<br />DPD即<strong>N.N-二乙基對(duì)苯二胺，</strong>DPD與水中游離余氯迅速反應(yīng)而產(chǎn)生紅色<br /></font></p> <div class="wlnh9bw" id="news_sx"><li id="aopabuf" class="sx_left">上一篇：<a href="/Article-93477.html">什么是一次儀表什么是二次儀表</a> <br />下一篇：<a href="/Article-93474.html">電導(dǎo)率儀的電極更換與清洗</a></li></div> </div> </div> </div> </div> <div id="4lfy9ck" class="clear"></div>  <div id="rfpa9pa" class="ly_foot"> <div id="z34uk0p" class="ft_main"> <div id="inpyexy" class="ft_contact"> <em>Contact Us</em> <ul> <li><img src="/Skins/71487/images/qq.png" />聯(lián)系QQ：2925768702</li> <li><img src="/Skins/71487/images/email.png" />聯(lián)系郵箱：2925768702@qq.com</li> <li><img src="/Skins/71487/images/fax.png" />傳真：0513-84312159</li> <li><img src="/Skins/71487/images/addr.png" />聯(lián)系地址：江蘇省南通市銀河工業(yè)園區(qū)</li> </ul> </div> <div id="kpi3jl9" class="ft_prolist"> 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