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mright_2 bk"> <div id="f9rdfrffl7j" class="mup"><div id="f9rdfrffl7j" class="mup_left">ARTICLE / <span>技術(shù)文章</span></div><div id="f9rdfrffl7j" class="mup_right"><a href="/">首頁(yè)</a> > <a href="/article.html">技術(shù)文章</a> > 綜合大氣采樣器采樣前、后注意事項</div></div> <h1 class="tittle">綜合大氣采樣器采樣前、后注意事項</h1> <div id="f9rdfrffl7j" class="wz_time">更新日期：2021-08-02 瀏覽次數：1185 </div> <div id="f9rdfrffl7j" class="nr"><span style="font-size: 14px;"> 　　綜合大氣采樣器主要用來(lái)采集環(huán)境大氣中的（TSP,PM10,SO2,NOx）空氣樣品，具有同時(shí)采樣、單獨采樣、多次采樣、隔日采樣、循環(huán)采樣等多種采樣方式。通過(guò)對采樣氣體分析，以了解環(huán)境被有害氣體污染的程度，并向有關(guān)主管部門(mén)提供污染的實(shí)際情況，以采取對策，從而保障人們有個(gè)健康的生活環(huán)境。<br /><br /></span><div><span style="font-size: 14px;">　　綜合大氣采樣器作為一款檢測儀器，在運用于采樣時(shí)要注意這幾點(diǎn)<br /><br type="_moz" /></span></div><div><span style="font-size: 14px;">　　采樣之前，吸收瓶中將填充與取樣吸收液相同量的水。氣路與軟管連接后，將流量調整到樣品的實(shí)際流量，以避免現場(chǎng)調試引起的流量誤差。</span></div><div><span style="font-size: 14px;">　　采樣時(shí)，首先必須在綜合大氣采樣器進(jìn)氣口處接上過(guò)濾器，防止大氣中的灰塵，氣溶膠，酸堿氣體等吸入泵內，降低儀器的工作性能和使用壽命。若操作不慎，發(fā)生倒吸現象，過(guò)濾器必須清洗干凈，并重新?lián)Q上濾棉或泡沫塑料；如吸入泵體內，首先用無(wú)水乙醇清洗泵體，然后將儀器空載運轉幾分鐘，待乙醇揮發(fā)干凈后方可投入正常使用。</span></div><div><span style="font-size: 14px;">　　采樣過(guò)程中，過(guò)濾器一方面連接過(guò)濾空氣，因為大氣中的灰塵，氣溶膠，酸和堿很容易被氣流吸入泵內，并附著(zhù)這些雜質(zhì)。會(huì )影響隔膜泵的流量，泵壓和穩定性。該儀器的技術(shù)性能將降低。另一方面，當溶液被吸入時(shí)，一旦溶液流過(guò)過(guò)濾器的過(guò)濾纖維，過(guò)濾纖維就會(huì )膨脹，阻塞進(jìn)氣通道，溶液不會(huì )進(jìn)一步流入隔膜泵，隔膜泵有一個(gè)對泵有良好的保護作用。若發(fā)生倒吸溶液時(shí)，只需清洗過(guò)濾器，重新?lián)Q上過(guò)濾纖維和泡沫塑料塊可解決問(wèn)題。</span></div><p align="center"><img src="https://img78.chem17.com/9/20210802/637634984146437983405.png" alt="綜合大氣采樣器" width="300" height="300" align="middle" /></p><p> </p></div> <div id="f9rdfrffl7j" class="dcont"></div> <div class="f9rdfrffl7j" id="news_sx"> <li id="f9rdfrffl7j" class="sx_left">上一篇：<a href="/Article-2733807.html">可燃氣體有哪些氣體</a><br />下一篇：<a href="/Article-2731197.html">煙塵煙氣測試儀的維護措施有哪些？</a></li> <li id="f9rdfrffl7j" 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