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href="http://www.cdcfah.com/cp/third-fenxiyiqi_ysfxyq/">元素分析儀器</a>?專業(yè)原子吸收分光光度計差價歡迎咨詢上海儀電分析儀器供應(yīng)</p><div id="y2ypw37" class="leftbox clearfix"><h1>專業(yè)原子吸收分光光度計差價歡迎咨詢上海儀電分析儀器供應(yīng)</h1><div id="jhjgdar" class="proBig"><div id="dsu7vx2" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988150712025/4463747.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="oczw37b" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988150712025/4463747.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="waskm83" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>專業(yè)原子吸收分光光度計差價,原子吸收分光光度計</p><p><span>***更新：</span>2020-12-25 04:14:59</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="gjrkmol" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海儀電分析儀器有限公司</a></p><p><span>聯(lián)系人：</span>薛馬駿</p><p><span>郵箱: </span>ydfxwx@qq.com</p><p><span>電話: </span>18001994173</p><p><span>傳真: </span>021_</p><p><span>網(wǎng)址: </span>http://www.inesa-a.com</p><p><span>手機: </span>021-34530361</p><p><span>地址: </span>徐塘路88號7幢4層、9幢</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="8gvrtfc" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="ti3s3lc" class="box"><p><p style="text-indent:25px">現(xiàn)在AAS在水質(zhì)中的微量重金屬(As，專業(yè)原子吸收分光光度計差價、Hg、Cd，專業(yè)原子吸收分光光度計差價、Cr、Cu等)檢測方面十分受用戶的青睞。例如：水中Cu大于1.5mg/L會有苦味;Cu對心病影響很大;水中Cu超標(biāo)會按捺藻類生長，影響水產(chǎn)飼養(yǎng);特別要注意的還有飲用水中的Hg，專業(yè)原子吸收分光光度計差價、As等對人類損害特別大，都是致的微量元素。為什么AAS在剖析檢測工作中倍受青睞?一是價格便宜、性價比高;二是操作比較簡單;三是靈敏度較高。所以，廣闊科技工作者應(yīng)該重視AAS的應(yīng)用開展情況。許多第三方檢測機構(gòu)都在很多使用AAS，現(xiàn)在開展很快值得我們高度重視。原子吸收分光光度計空氣—乙炔火焰原子吸收分光光度計。專業(yè)原子吸收分光光度計差價</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="專業(yè)原子吸收分光光度計差價,原子吸收分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988150712025/4463747.png"></div><p style="text-indent:25px">原子吸收分光光度計的優(yōu)點是：（1）檢出限低，靈敏度高?；鹧嬖游辗ǖ臋z出限可達10-9g（ppm級），石墨爐原子吸收法更高，可達ppb級。（2）丈量精度好?；鹧嬖游辗y定中等和高含量元素的相對偏差可小于0.01，丈量精度已接近于經(jīng)典化學(xué)辦法。石墨爐原子吸收法的丈量精度一般為3-5。樣品由載氣（氬）帶入霧化系統(tǒng)進行霧化后，以氣溶膠形式進入等離子體的軸向通道，在高溫文惰性氣氛中被充沛蒸騰、原子化、電離和激起，發(fā)射出所含元素的特征譜線。依據(jù)特征譜線的存在與否，鑒別樣品中是否含有某種元素（定性分析）；根依據(jù)特征譜線強度確定樣品中相應(yīng)元素的含量（定量分析）。暗箱原子吸收分光光度計差價石墨爐法，進樣量少，靈敏度高，有的元素也可以分析到pg/mL級。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="專業(yè)原子吸收分光光度計差價,原子吸收分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419991291551872/1267970.png"></div><p style="text-indent:25px">原子吸收分光光度計噴口氣流通道阻塞：可取下撞擊球帽用反向氣流或水沖刷，也可用注射器灌水沖刷。噴口內(nèi)管或氣流通道被有機質(zhì)、積累的灰塵或干涸的鹽類等阻塞，可取下撞擊球帽將噴口刺進加熱或發(fā)煙的硫酸－重鉻酸鉀溶液中幾秒鐘，冷后用水沖刷（留意：不行使洗液進入霧化器內(nèi)部），運用半年以上或發(fā)現(xiàn)流量削減，也應(yīng)照此處理。原子吸收分光光度計每次運用結(jié)束，用蒸餾水吸噴2～3分鐘（不行用自來水防止溶液干涸阻塞）。工作室溫不行低于10度，不然噴口的降溫效果可使溶液結(jié)冰阻塞霧化器。</p><p style="text-indent:25px">金屬化學(xué)形態(tài)分析中的應(yīng)用：通過氣相色譜和液體色譜分離然后以原子吸收光譜加以測定，可以分析同種金屬元素的不同有機化合物。例如汽油中5種烷基鉛，大氣中的5種烷基鉛、烷基硒、烷基胂、烷基錫，水體中的烷基胂、烷基鉛、烷基揭、烷基汞、有機鉻，生物中的烷基鉛、烷基汞、有機鋅、有機銅等多種金屬有機化合物，均可通過不同類型的光譜原子吸收聯(lián)用方式加以鑒別和測定?？傠娫粗甘緹舨涣凉收显颍簝x器電源線斷路或接觸不良2.儀器保險絲熔斷3.保險管接觸不良?；鹧嬖游辗止夤舛扔嬋秉c是：原子化效率低，靈敏度不夠高。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="專業(yè)原子吸收分光光度計差價,原子吸收分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988246893719/5353894.png"></div><p style="text-indent:25px">原子吸收分析中，首先要使待測元素呈原子狀態(tài)，而原子化往往是將溶液噴霧到火焰中去實現(xiàn)，這就存在理化方面的干擾，使對難溶元素的測定靈敏度還不夠理想，因此實際效果理想的元素*30余個；由于儀器使用中，需用乙炔、氫氣、氬氣、氧化亞氮（俗稱笑氣）等，操作中必須注意安全。原子吸收分光光度計一般由四大部分組成，即光源（單色銳線輻射源）、試樣原子化器、單色儀和數(shù)據(jù)處理系統(tǒng)（包括光電轉(zhuǎn)換器及相應(yīng)的檢測裝置）。原子化器主要有兩大類，即原子吸收分光光度計和電熱原子化器?；鹧嬗卸喾N火焰，目前普遍應(yīng)用的是空氣—乙炔火焰。原子吸收分光光度計對空心陰極燈發(fā)射的特征輻射進行選擇性吸收。學(xué)校原子吸收分光光度計怎么樣</p><p style="text-indent:25px">石墨爐原子吸收分光光度計，可以測定近50種元素。專業(yè)原子吸收分光光度計差價</p><p style="text-indent:25px">原子吸收光譜儀又稱原子吸收分光光度計，根據(jù)物質(zhì)基態(tài)原子蒸汽對特征輻射吸收的作用來進行金屬元素分析。它能夠靈敏可靠地測定微量或痕量元素。氣態(tài)的原子能發(fā)射某些特征譜線，也能吸收同樣波長的這些譜線。這是歷史上用原子吸收光譜進行定性分析的一例證。很長一段時間，原子吸收主要局限于天體物理方面的研究，在分析化學(xué)中的應(yīng)用未能引起重視，其主要原因是未找到可產(chǎn)生銳線光譜的光源。直至20世紀(jì)30年代，由于汞的多應(yīng)用，對大氣中微量汞的測定曾利用原子吸收光譜原理設(shè)計了測汞儀，這是原子吸收在分析中的早應(yīng)用。專業(yè)原子吸收分光光度計差價</p><p style="text-indent:25px">上海儀電分析儀器有限公司總部位于徐塘路88號7幢4層、9幢，是一家儀器儀表、電子元器件及相關(guān)的系統(tǒng)集成的生產(chǎn)、服務(wù)及銷售，計算機軟件開發(fā)及銷售，從事貨物進出口及技術(shù)進出口業(yè)務(wù)?！疽婪毥?jīng)批準(zhǔn)的項目，經(jīng)相關(guān)部門批準(zhǔn)后方可開展經(jīng)營活動】儀器儀表、電子元器件及相關(guān)的系統(tǒng)集成的生產(chǎn)、服務(wù)及銷售，計算機軟件開發(fā)及銷售，從事貨物進出口及技術(shù)進出口業(yè)務(wù)?！疽婪毥?jīng)批準(zhǔn)的項目，經(jīng)相關(guān)部門批準(zhǔn)后方可開展經(jīng)營活動】的公司。儀電分析深耕行業(yè)多年，始終以客戶的需求為向?qū)?，為客戶提?**的分光光度計，氣相色譜，原子吸收，食品安全。儀電分析致力于把技術(shù)上的創(chuàng)新展現(xiàn)成對用戶產(chǎn)品上的貼心，為用戶帶來良好體驗。儀電分析創(chuàng)始人湯志東，始終關(guān)注客戶，創(chuàng)新科技，竭誠為客戶提供良好的服務(wù)。</p></p><br /><p>文章來源地址: 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