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class="page-proshow clearfix"><p class="current"> 當前位置:<a href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產品供應</a>?<a href="http://www.cdcfah.com/cp/first-_yiqiyibiao/">儀器儀表</a>?<a href="http://www.cdcfah.com/cp/second-yiqiyibiao_fenxiyiqi/">分析儀器</a>?<a href="http://www.cdcfah.com/cp/third-fenxiyiqi_ysfxyq/">元素分析儀器</a>?國內原子吸收分光光度計排名服務為先上海儀電分析儀器供應</p><div id="ix2srd8" class="leftbox clearfix"><h1>國內原子吸收分光光度計排名服務為先上海儀電分析儀器供應</h1><div id="hl8r8c2" class="proBig"><div id="rvs8rhz" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988188495975/1516361.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="dmjv2m3" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988188495975/1516361.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="ba2kzls" class="content"><p><span>需求數量：</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>產品關鍵詞：</span>國內原子吸收分光光度計排名,原子吸收分光光度計</p><p><span>***更新：</span>2020-12-29 03:14:22</p><p><span id="click" >瀏覽次數：0次</span></p><a rel="nofollow" class="button">聯系我們</a></div></div><div id="r7ywm8b" 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="c9vxzoq" class="page-proshow02"><p class="title">詳細說明</p><div id="lct8io7" class="box"><p><p style="text-indent:25px">原子吸收光譜儀又稱原子吸收分光光度計，根據物質基態(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，國內原子吸收分光光度計排名。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，在分析化學中的應用未能引起重視，其主要原因是未找到可產生銳線光譜的光源。直至20世紀30年代，由于汞的多應用，對大氣中微量汞的測定曾利用原子吸收光譜原理設計了測汞儀，國內原子吸收分光光度計排名，這是原子吸收在分析中的早應用，國內原子吸收分光光度計排名?；鹧嬖踊ǖ膬?yōu)點是：火焰原子化法的操作簡便，重現性好，有效光程大。國內原子吸收分光光度計排名</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="國內原子吸收分光光度計排名,原子吸收分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988188495975/1516361.png"></div><p style="text-indent:25px">原子吸收分光光度計測土壤巖石中砷銻鉍汞時常見問題的剖析：氫化物的產生條件與技術指標是作業(yè)曲線是否滿足要求的條件，測驗不同的元素應設定不同的氫化物的產生條件，條件的設定符合儀器使用說明書中給定的推薦剖析條件。在測驗規(guī)范系列時，如儀器靈敏度不符合要求，則應加大負高壓或加大電流，從頭測定空白，然后測規(guī)范系列。別的，當規(guī)范系列含量太低時，該儀器靈敏度達不到。規(guī)范貯備液主張購買國家規(guī)范物質中間制造的規(guī)范溶液。在配置的過程中應注意所用水、試劑、容器的污染問題，所用容器應該在使用前用硝酸溶液浸泡24小時，沖凈后使用。規(guī)范溶液在長期貯備過程中也會出現蒸發(fā)，因而需要確保規(guī)范溶液在有效期之內。國內**原子吸收分光光度計性價比原子吸收分光光度計，就有原子吸收分光光度計和帶石墨爐的原子吸收分光光度計。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="國內原子吸收分光光度計排名,原子吸收分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419991385859509/5179129.png"></div><p style="text-indent:25px">通常情況下，原子處于基態(tài)。當相當于原子中的電子由基態(tài)躍遷到激發(fā)態(tài)所需求的輻射頻率經過原子蒸氣，原子就能從入射輻射中吸收能量，發(fā)生共振吸收，然后發(fā)生吸收光譜。原子吸收剖析便是使用基態(tài)原子對特征輻射的吸收程度的，常使用強吸收線作為剖析線。原子吸收光譜儀由以下四部分組成光源系統(tǒng):空心陰燈原子化系統(tǒng):火焰原子化器;原子吸收分光光度計或氫化物發(fā)生器。分光系統(tǒng)：單色器檢測系統(tǒng)：光電倍增管等。原子吸收分光光度計的長處是:原子化效率高，在可調的高溫下試樣使用率達100，活絡度高，試樣用量少，適用于難熔元素的測定。缺陷是:試樣組成不均勻性的影響較大，測定度較低，共存化合物的攪擾比火焰原子化法大，攪擾布景比較嚴重，一般都需求校正布景。</p><p style="text-indent:25px">哪些是原子吸收分光光度計的特點?原子吸收分光光度計(AAS)簡稱原子吸收法，是使用被測元素基態(tài)原子蒸氣對其共振輻射線的吸收特性進行元素定量剖析的方法。原子吸收分光光度計具有以下特色：①靈敏度高：慣例剖析法對大多數元素可到達ppm級;使用特別手法可到達ppb級的濃度范圍;②精密度好：一般測定RSD約為1%～3%，使用特別方法精密度可小于1%。③使用范圍廣：周期表中70多種元素可使用該法測定：④干擾少：原子吸收光譜為分立的銳線光譜，且譜線堆疊性少，干擾性小;⑤試樣用量少：選用石墨爐無火焰原子吸收法，每次丈量*需5～20μl試液或0.05～10mg的固體試樣;⑥快速簡潔，易于自動化：液體試樣?？芍苯舆M樣，一般樣品無需進行預別離處理，新型號產品儀器的進樣和測定步驟全部自動化完成。原子吸收分光光度計根據物質基態(tài)原子蒸汽對特征輻射吸收的作用來進行金屬元素分析。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="國內原子吸收分光光度計排名,原子吸收分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419991311337342/3521940.png"></div><p style="text-indent:25px">原子吸收分光光度計作業(yè)曲線一向不穩(wěn)定，熒光值穩(wěn)定性差，讀書單方向加大或削減，或停止一會后持續(xù)作業(yè)，讀數變大超差。可能形成的原因是燈老化，空心陰方燈不穩(wěn)，發(fā)射光的強度有隨溫度增高而加大或變小的漂移現象，消除的辦法是用反向電流予以激發(fā)，改進性能，激發(fā)無效果，予以換燈。此外，鹽酸、容器、水污染，取主規(guī)范溶液時的偶然誤差也是形成作業(yè)曲線線性關系差的原因。電壓缺乏，點火電路絲氧化變細，KBH4寄存時間過久或量少，樣品溶液酸度不夠。掃除辦法是使用穩(wěn)壓器確保220V供電，替換電爐絲，從頭配制KBH4，調大鹽酸濃度。在一定濃度范圍內，原子吸收分光光度計吸收強度與試液中被測元素的含量成正比。國內**原子吸收分光光度計性價比</p><p style="text-indent:25px">由于汞的多應用，對大氣中微量汞的測定曾利用原子吸收光譜原理設計了測汞儀。國內原子吸收分光光度計排名</p><p style="text-indent:25px">原子吸收分光光度計如主機有加輔佐助燃氣的通道，應將輔佐助燃氣關斷，不然未參與噴霧的助燃氣可使靈敏度下降，過大的助燃氣流量不但耗費燃氣，乃至不能點著火焰。原子吸收分光光度計一切霧化器之間不能呼喚撞擊球帽，不然靈敏度下降很大。原子吸收分光光度計運轉的的攪擾有哪些物理攪擾：物理攪擾是指試樣在轉移、蒸發(fā)和原子化過程中，原子吸收分光光度計由于試樣任何物理特性（如粘度、表面張力、密度等）的變化而引起的原子吸收強度下降的效應。國內原子吸收分光光度計排名</p><p style="text-indent:25px">上海儀電分析儀器有限公司致力于儀器儀表，是一家生產型的公司。公司業(yè)務涵蓋分光光度計，氣相色譜，原子吸收，食品安全等，價格合理，品質有保證。公司從事儀器儀表多年，有著創(chuàng)新的設計、強大的技術，還有一批**的專業(yè)化的隊伍，確保為客戶提供良好的產品及服務。儀電分析立足于全國市場，依托強大的研發(fā)實力，融合前沿的技術理念，飛快響應客戶的變化需求。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2607666.html</p></div></div></div></div></div><div id="psum33f" class="page-right twoColRt"><div id="sh7g7cz" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="ix7yne7" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強信息推薦自業(yè)物資供應" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強信息推薦自業(yè)物資供應</p></a></div><div id="hwt2ovx" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/846569.html"><div><img 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