元素原子吸收分光光度計生產(chǎn)廠家誠信互利上海儀電分析儀器供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="原子吸收分光光度計安全使用的前提條件：原子吸收分光光度計是基于從光源中輻射出的待測元素的特征光波通過樣品的原子蒸氣時，被蒸氣中待測元素的基態(tài)原子所吸收，使通過的光波強度削弱，依據(jù)光波強度削弱的程度，可以求出樣品中待測元素的含量。利用待測元素"><meta name="keywords" content="元素原子吸收分光光度計生產(chǎn)廠家,原子吸收分光光度計"><link rel="canonical" href="http://www.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta name="baidu-site-verification" content="OBVzrC9aaQ" /> <meta http-equiv="Cache-Control" content="no-transform" /> 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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="ktq7kzl" 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="jyv4fhu" 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>元素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>2020-12-29 03:14:22</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="utvf32a" 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="qax4hz3" class="page-proshow02"><p class="title">詳細說明</p><div id="28qagya" class="box"><p><p style="text-indent:25px">原子吸收分光光度計安全使用的前提條件：原子吸收分光光度計是基于從光源中輻射出的待測元素的特征光波通過樣品的原子蒸氣時，被蒸氣中待測元素的基態(tài)原子所吸收，使通過的光波強度削弱，依據(jù)光波強度削弱的程度，可以求出樣品中待測元素的含量。利用待測元素的共振輻射，元素原子吸收分光光度計生產(chǎn)廠家，通過其原子蒸汽，測定其吸光度的裝置稱為原子吸收分光光光源，原子化器，光學(xué)系統(tǒng)和檢測系統(tǒng)。它主要用于痕量元素雜質(zhì)的分析，具有靈敏度高、精確度好和選擇性好三大主要優(yōu)點。多應(yīng)用于特種氣體，金屬有機化合物，金屬醇鹽中微量元素的分析，元素原子吸收分光光度計生產(chǎn)廠家，元素原子吸收分光光度計生產(chǎn)廠家。但是測定每種元素均需要相應(yīng)的空心陰極燈，這對檢測工作帶來不便。原子吸收分光光度計測定每種元素均需要相應(yīng)的空心陰極燈，這對檢測工作帶來不便。元素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="元素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">原子吸收分光光度計中常用的定量辦法：規(guī)范曲線法。規(guī)范曲線法是用規(guī)范物質(zhì)制造一系列已知濃度的規(guī)范試樣，在規(guī)范條件下，測得每一濃度對應(yīng)的吸光度值，以吸光度對濃度作圖，制作規(guī)范曲線。在相同條件下測定樣品吸光度，從規(guī)范曲線上讀取樣品濃度。長處：適用范圍廣，快速簡便，合適大批量樣品的測定。缺乏：試驗準確度受基體干擾嚴重。規(guī)范參加法：規(guī)范參加法是在數(shù)個等分的試樣平分別參加呈比例的規(guī)范試樣，然后稀釋到一定體積。根據(jù)測定的吸光度值，制作吸光度A-c（濃度）曲線。用外推法求得稀釋后試樣中待測物的濃度?？煽吭游辗止夤舛扔嬇判谢鹧嬖游辗止夤舛扔嬕话悴荒苤苯臃治龉腆w樣品。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="元素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/ydfx123/637419988163192494/7997740.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">原子吸收分光光度計電離效應(yīng)隨溫度升高、電離平衡常數(shù)加大而加大，隨被測元素濃度增高而減小。參加更易電離的堿金屬元素，能夠有用地消除電離攪擾。物理攪擾是非選擇性攪擾，對試樣各元素的影響基本是類似的，配制與被測試樣類似組成的標準樣品，是消除物理攪擾常用的方法。在不知道試樣組成或無法匹配試樣時，可采用標準參加法或稀釋法來減小和消除物理攪擾。針對糧食溫度等監(jiān)測問題，我國從2000年就開端實施數(shù)字糧情測控系統(tǒng)，按照必定的密度部署單總線溫度傳感器，協(xié)助糧倉完成數(shù)字溫度的實時監(jiān)測。原子吸收分光光度計有單光束，雙光束，雙波道，多波道等結(jié)構(gòu)形式。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="元素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/ydfx123/637419991236161257/4858141.png"></div><p style="text-indent:25px">原子吸收光譜分析工作原理：利用待測元素的共振輻射，通過其原子蒸汽，測定其吸光度的裝置稱為原子吸收分光光度計。它有單光束，雙光束，雙波道，多波道等結(jié)構(gòu)形式。其基本結(jié)構(gòu)包括光源，原子化器，光學(xué)系統(tǒng)和檢測系統(tǒng)。它主要用于痕量元素雜質(zhì)的分析，具有靈敏度高及選擇性好兩大主要優(yōu)點。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。但是測定每種元素均需要相應(yīng)的空心陰極燈，這對檢測工作帶來不便?；鹧嬖踊ǖ膬?yōu)點是：火焰原子化法的操作簡便，重現(xiàn)性好，有效光程大，對大多數(shù)元素有較高靈敏度，因此應(yīng)用多。缺點是：原子化效率低，靈敏度不夠高，而且一般不能直接分析固體樣品。原子吸收分光光度計若使用氧化亞氮—乙炔火焰。甲醇原子吸收分光光度計比較</p><p style="text-indent:25px">電熱原子化器普遍應(yīng)用的是原子吸收分光光度計。元素原子吸收分光光度計生產(chǎn)廠家</p><p style="text-indent:25px">原子吸收分光光度計詳細組成部分如下：組成部分一：電光體系。在該體系中首要是由鎢燈和相應(yīng)的電源組成，這種體系對整體的穩(wěn)定性就有很大影響，當(dāng)該體系不能正常工作后也會導(dǎo)致儀器工作不穩(wěn)定。組成部分二：光學(xué)體系。這種體系包含有外光路體系和單色器2個首要部分，其間外光路和單色器都有很多類型，單色器便是紫外可見分光光度計散光的首要來歷。組成部分三：光電體系。該體系是紫外可見分光光度計要害的部件，體系會直接影響到儀器中的靈敏度和適用范圍，里邊有光電倍增管、光電管和硅光電池等。元素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致力于儀器儀表，是一家生產(chǎn)型的公司。公司業(yè)務(wù)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(zhì)有保證。公司從事儀器儀表多年，有著創(chuàng)新的設(shè)計、強大的技術(shù)，還有一批**的專業(yè)化的隊伍，確保為客戶提供良好的產(chǎn)品及服務(wù)。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(shù)理念，飛快響應(yīng)客戶的變化需求。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2607668.html</p></div></div></div></div></div><div id="dxpzq7l" class="page-right twoColRt"><div id="jjwjz78" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="o78heqn" 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 id="m2epctv" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/846569.html"><div><img 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