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src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988105282341/1372565.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="eb7vbhi" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988105282341/1372565.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="ilh7ab8" 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>全自動原子吸收分光光度計生產(chǎn)廠家,原子吸收分光光度計</p><p><span>***更新：</span>2021-01-04 04:14:23</p><p><span id="click" >瀏覽次數(shù)：2次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="833efl2" 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="3hqw2qh" class="page-proshow02"><p class="title">詳細說明</p><div id="emieaw3" class="box"><p><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(shù)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(xiàn)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，全自動原子吸收分光光度計生產(chǎn)廠家。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(guān)系差的原因。電壓缺乏，點火電路絲氧化變細，全自動原子吸收分光光度計生產(chǎn)廠家，KBH4寄存時間過久或量少，全自動原子吸收分光光度計生產(chǎn)廠家，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(diào)大鹽酸濃度?；鹧嬖游辗止夤舛扔媽Υ蠖鄶?shù)元素有較高靈敏度。全自動原子吸收分光光度計生產(chǎn)廠家</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="全自動原子吸收分光光度計生產(chǎn)廠家,原子吸收分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988105282341/1372565.png"></div><p style="text-indent:25px">原子吸收分光光度計的常見體系種類有哪些？DEMONA分光體系：中階梯光柵單色器的應(yīng)用越來越多中階。梯光柵單色器在次光譜區(qū)作業(yè)，次光譜自在光譜區(qū)很小，為了將不同級次的堆疊光譜分隔，通常采取穿插色散（在中階梯光柵光路的前方或后方添加首級輔助色散元件），使譜線色散方向和譜級散開方向正交，在焦面上構(gòu)成一個二維色散圖像。這種光柵分辨率較高，可達0.002nm，結(jié)構(gòu)細巧。中階梯光柵單色器結(jié)合面陣檢測器可一起接納整個作業(yè)波段范圍的光譜可完成快速多元素一起測定。環(huán)保原子吸收分光光度計元素在熱解石墨爐中被加熱原子化，成為基態(tài)原子蒸汽。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="全自動原子吸收分光光度計生產(chǎn)廠家,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">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。元素在熱解石墨爐中被加熱原子化，成為基態(tài)原子蒸汽，對空心陰極燈發(fā)射的特征輻射進行選擇性吸收。在一定濃度范圍內(nèi)，其吸收強度與試液中被測元素的含量成正比。其定量關(guān)系可用郎伯-比耳定律，A=-lgI/Io=-lgT=KCL，式中I為透射光強度；I0為發(fā)射光強度；T為透射比；L為光通過原子化器光程(長度)，每臺儀器的L值是固定的；C是被測樣品濃度；所以A=KC。</p><p style="text-indent:25px">金屬化學形態(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。總電源指示燈不亮故障原因：儀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。原子吸收分光光度計多應(yīng)用于各種氣體，金屬有機化合物，金屬醇鹽中微量元素的分析。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="全自動原子吸收分光光度計生產(chǎn)廠家,原子吸收分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419991252020619/9480950.png"></div><p style="text-indent:25px">原子吸收分光光度計空心陰方燈的作業(yè)電流挑選：空心陰方燈一般需求預(yù)熱10-30min才干到達安穩(wěn)輸出。燈電流過小，放電不安穩(wěn)，故光譜輸出不安穩(wěn)，且光譜輸出強度??；燈電流過大，發(fā)射譜線變寬，導(dǎo)致靈敏度下降，校正曲線曲折，燈壽數(shù)縮短。選用燈電流的一般原則是，在保證有滿足強且安穩(wěn)的光強輸出條件下，盡量運用較低的作業(yè)電流。通常以空心陰方燈上標明的很大電流的一半至三分之二作為作業(yè)電流。在具體的剖析場合，很適宜的作業(yè)電流由實驗確定。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。環(huán)保原子吸收分光光度計</p><p style="text-indent:25px">原子吸收分光光度計使儀器顯示數(shù)字化、進樣自動化。全自動原子吸收分光光度計生產(chǎn)廠家</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(shù)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：液體試樣常可直接進樣，一般樣品無需進行預(yù)別離處理，新型號產(chǎn)品儀器的進樣和測定步驟全部自動化完成。全自動原子吸收分光光度計生產(chǎn)廠家</p><p style="text-indent:25px">上海儀電分析儀器有限公司是一家儀器儀表、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)批準的項目，經(jīng)相關(guān)部門批準后方可開展經(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)批準的項目，經(jīng)相關(guān)部門批準后方可開展經(jīng)營活動】的公司，是一家集研發(fā)、設(shè)計、生產(chǎn)和銷售為一體的專業(yè)化公司。儀電分析擁有一支經(jīng)驗豐富、技術(shù)創(chuàng)新的專業(yè)研發(fā)團隊，以高度的專注和執(zhí)著為客戶提供分光光度計，氣相色譜，原子吸收，食品安全。儀電分析始終以本分踏實的精神和必勝的信念，影響并帶動團隊取得成功。儀電分析始終關(guān)注儀器儀表行業(yè)。滿足市場需求，提高產(chǎn)品價值，是我們前行的力量。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2694328.html</p></div></div></div></div></div><div id="mzqcyun" class="page-right twoColRt"><div id="trnofgm" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="4ufbxiv" 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" 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