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clearfix"><h1>水質(zhì)原子吸收分光光度計選擇歡迎咨詢上海儀電分析儀器供應(yīng)</h1><div id="grdxe78" class="proBig"><div id="73nrszg" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419991236161257/4858141.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="bfrofws" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419991236161257/4858141.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="y7cjari" 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>水質(zhì)原子吸收分光光度計選擇,原子吸收分光光度計</p><p><span>***更新：</span>2021-01-28 09:12:24</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="aebdfmt" 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="84tkwtu" class="page-proshow02"><p class="title">詳細說明</p><div id="smegno8" class="box"><p><p style="text-indent:25px">原子吸收分光光度計與紫外可見分光光度計的區(qū)別：1、光源:紫外可見分光光度計使用的是鎢燈或氘燈發(fā)射連續(xù)光譜。原子吸收分光光度計使用的是空心陰極燈發(fā)射特征波長的銳線光，選擇性會更好。2、檢測器：紫外可見分光光度計一般使用光電管來檢測。而原子吸收分光光度計使用的是光電倍增管，分辨力比光電管強。3、應(yīng)用：原子吸收分光光度計是屬于原子光譜。紫外可見分光光度計屬于分子光譜，水質(zhì)原子吸收分光光度計選擇，兩者都符合朗伯-比耳定律；4、檢出限:原子吸收分光光度計檢出限低，火焰原子吸收法的檢出限可達到ppb級，水質(zhì)原子吸收分光光度計選擇。紫外可見分光光度計如果顯色劑不同則檢出限也不一樣，水質(zhì)原子吸收分光光度計選擇，但每種顯色劑帶來的干擾也會不一樣。原子吸收分光光度計使儀器顯示數(shù)字化、進樣自動化。水質(zhì)原子吸收分光光度計選擇</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="水質(zhì)原子吸收分光光度計選擇,原子吸收分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419991236161257/4858141.png"></div><p style="text-indent:25px">原子吸收光譜儀分析中的干擾效應(yīng)：1、電離干擾：在高溫下原子電離，使基態(tài)原子的濃度減少，引起原子吸收信號降低，此種干擾稱為電離干擾。電離效應(yīng)隨溫度升高、電離平衡常數(shù)增大而增大，隨被測元素濃度增高而減小。加入更易電離的堿金屬元素，可以有效地消除電離干擾。2、光譜干擾：光譜干擾包括譜線重疊、光譜通帶內(nèi)存在非吸收線、原子化池內(nèi)的直流發(fā)射、分子吸收、光散射等。當采用銳線光源和交流調(diào)制技術(shù)時，主要考慮分子吸收和光散射的影響，它們是形成光譜背景的主要因素。石油原子吸收分光光度計賣價為便于操作與維修，實驗臺周圍應(yīng)留出足夠的空間。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="水質(zhì)原子吸收分光光度計選擇,原子吸收分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988134237392/1056352.png"></div><p style="text-indent:25px">儀器出廠前需經(jīng)質(zhì)檢部門按專業(yè)規(guī)范或企業(yè)規(guī)范檢定。實驗室中的儀器也需經(jīng)計量部門按檢定規(guī)程定期檢定前方可運用,理解和控制儀器的檢定驗收技術(shù)尤為重要。本節(jié)引見有關(guān)儀器主要技術(shù)指標的測試和檢定辦法。譜線的理論波長與儀器波長機構(gòu)讀數(shù)的差值稱為波長示值誤差。目前,原子吸收分光光度計大多以正弦機構(gòu)調(diào)理波長。商品儀器經(jīng)過長途運輸?shù)恼駝?波長示值可能超差。按波長次第假如一直是正誤差或負誤差,但差值不等,能夠經(jīng)過調(diào)整正弦機構(gòu)來校正；若差值大致相等,則可調(diào)理波長鼓輪或數(shù)碼輪來校正；若差值隨波長變化而正負動搖,則需重新調(diào)理光學(xué)系統(tǒng)。專業(yè)規(guī)范和檢定規(guī)程請求,波長示值誤差應(yīng)不大于0.5nm，波長反復(fù)性應(yīng)優(yōu)于0.3nm。</p><p style="text-indent:25px">新購儀器應(yīng)及時開箱,按清單逐一查對主機、附件、零配件和運用闡明書等能否齊全,同時要檢查儀器二表觀能否有損傷。如發(fā)現(xiàn)問題及時向消費戶家提出,要留意維護現(xiàn)場,以便剖析損傷緣由。在開箱后和裝置前,必需認真閱讀儀器運用闡明書,熟習(xí)儀器原理、構(gòu)造和運用辦法,理解儀器對實驗,室環(huán)境條件和安裝條件的請求：完善條件和做好裝置前的各項準備工作將主機、計算機、打印機、空壓機、循環(huán)冷卻水安裝、石墨爐及其電源安裝當心從包裝箱中取出,按闡明書請求整體規(guī)劃。主機和附件放在工作臺上以后,調(diào)整其底腳使之平穩(wěn)、受力平均。逐一檢查主機的外光路,主機和配件電器及機械局部的表觀情況。然后依照闡明書中的請求銜接好儀器的電路、氣路和水路。原子吸收分析中，首先要使待測元素呈原子狀態(tài)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="水質(zhì)原子吸收分光光度計選擇,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，有火焰原子吸收分光光度計和帶石墨爐的原子吸收分光光度計兩種。前者原子化的溫度在2100℃～2400℃之間，后者在2900℃～3000℃之間。火焰原子吸收分光光度計，利用空氣—乙炔測定的元素可達30多種，若使用笑氣—乙炔火焰，測定的元素可達70多種。但笑氣—乙炔火焰安全性較差，客戶應(yīng)用不普遍，基本上實驗室都取締了?？諝狻胰不鹧嬖游辗止夤舛确?，一般可檢測到PPm級（10-6），精密度1%左右。國產(chǎn)的火焰原子吸收分光光度計，AA-1800C，都可配備各種型號的氫化物發(fā)生器（屬電加熱原子化器），利用氫化物發(fā)生器，可測定砷（As）、銻（Sb）、鍺（Ge）、碲（Te）等元素。一般靈敏度在ng/ml級（10－9），相對標準偏差2%左右。汞(Hg)可用冷原子吸收法測定。石墨爐原子吸收分光光度計，可以測定近50種元素。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。原子吸收分光度計分析樣品優(yōu)點：靈敏度高。分析檢測原子吸收分光光度計</p><p style="text-indent:25px">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。水質(zhì)原子吸收分光光度計選擇</p><p style="text-indent:25px">原子吸收分光度計分析樣品優(yōu)點：⑴靈敏度高。采用火焰原子化方式，大多元素的靈敏度可達ppm級，少數(shù)元素可達ppb級，原子吸收分光度計若用高溫石墨爐原子化，其靈敏度可達10-10-10-14g，因此，原子吸收光譜法極適用于痕量金屬分析。⑵選擇性好。由于原子吸收線比原子發(fā)射線少得多，因此，本法的光譜干擾少，加之采用單元素制成的空芯陰極燈作銳線光源，光源輻射的光譜較純，對樣品溶液中被測元素的共振線波長處不易產(chǎn)生背景發(fā)射干擾。⑶操作方便、快速。原子吸收光譜分析與分光光度分析極為類似，其儀器結(jié)構(gòu)、原理也大致相同，原子吸收分光度計因此對于長期從事化學(xué)分析的人使用原子吸收儀器極為方便，火焰原子吸收分析的速度也較快。水質(zhì)原子吸收分光光度計選擇</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3048534.html</p></div></div></div></div></div><div id="r3no2ic" class="page-right twoColRt"><div id="y28su39" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="pykmtub" 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(yīng)" 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(yīng)</p></a></div><div 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