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<p><span>水體中的油分來自于工業(yè)廢水、生活污水的排放，以及動(dòng)物分解等方法。據(jù)估計(jì)，*每年可能有500×104～1000×104噸石油及其產(chǎn)品排入水體，產(chǎn)生各種不同程度的污染，石油的泄漏及戰(zhàn)爭(zhēng)因素造成的。</span></p><p><span> 水中油的危害及測(cè)定方法</span></p><p><span> 1、油類的主要危害</span></p><p><span> ①消耗水中的DO，使水質(zhì)惡化。分散于水中的油，部分吸附于懸浮顆粒，或以乳物狀態(tài)存在于水體中，部分溶于水中，水中的油在被微生物分解氧化過程中消耗DO，使水質(zhì)惡化；同時(shí)，漂浮于水體表面的油，影響空氣-水體界面上的氣體交換，形成一層油膜，結(jié)果水體不能及時(shí)從空氣中補(bǔ)充O2，更促進(jìn)了水質(zhì)惡化。</span></p><p><span> ②毒害魚類，給漁業(yè)生產(chǎn)帶來破壞。石油污染能直接毒害魚類，特別是油膜和油團(tuán)能粘住大量卵和幼魚，給魚類繁殖帶來危害。即使油的濃度低至10-4～10-5mg/L，魚卵存活率也只有55百分之～89百分之，而畸形仔魚占到23百分之～40百分之。報(bào)道：前蘇聯(lián)里海由于石油污染，海洋魚類賴以生存的浮游生物明顯下降，鱘魚總產(chǎn)量下降2/3，鯉魚、棱子魚、幾乎絕跡。</span></p><p><span>因此，油類已成為水的常規(guī)監(jiān)測(cè)項(xiàng)目之一。</span></p><p><span>2、油的測(cè)定方法</span></p><p><span><br/></span></p><p><span>①重量法：操作復(fù)雜，靈敏度低，但不受油品的限制</span></p><p><span>②紫外分光光度法：</span></p><p><span>易普及，靈敏度高，基于芳烴類物質(zhì)在一定波長(zhǎng)下有特征吸收，對(duì)于芳烴類有較高靈敏度</span></p><p><span>③熒光法：靈敏度更高</span></p><p><span>④紅外法：靈敏度更高</span></p><p><span><br/></span></p><p><span>想要了解有關(guān)水質(zhì)測(cè)定儀請(qǐng)聯(lián)系我們：河南綏凈環(huán)?？萍加邢薰?/span></p><p><br/></p><p><br/></p> </div> <div id="3tzm5vv4jmr" class="ly_PrevNext"> <ul> <li>上一篇：<a href="/Article-2981187.html">便攜式COD測(cè)定儀，方便攜帶，是現(xiàn)場(chǎng)測(cè)量的好助手</a></li> <li>下一篇：<a href="/Article-2981150.html">總氮和氨氮的區(qū)別是什么</a></li> </ul> </div> </div>   <div id="3tzm5vv4jmr" class="ly_foot"> <div id="3tzm5vv4jmr" class="ly_Ftmain"> <div 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