學校原子吸收分光光度計誠信互利上海儀電分析儀器供應-b2b網(wǎng)站_b2b電子商務平臺【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="調(diào)整熄滅器位置的目的在于使其縫口平行于外光路的光軸并位于正下方,以保證空心陰極燈的光束完整經(jīng)過火焰并集聚于火焰中心而取得較高的靈活度。熄滅器的調(diào)整是在靜態(tài)下停止的。常以銅燈(324.1nm)作光源,按前述調(diào)整好燈的位置,調(diào)理負高壓,使透射比"><meta name="keywords" content="學校原子吸收分光光度計,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" /> <meta 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clearfix tcPro"><section class="home-main container clearfix"><div id="can3oby" class="twoCol"><div id="b8z7j7f" 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(chǎn)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>?學校原子吸收分光光度計誠信互利上海儀電分析儀器供應</p><div id="8y3dnkm" class="leftbox clearfix"><h1>學校原子吸收分光光度計誠信互利上海儀電分析儀器供應</h1><div id="2mluq7d" class="proBig"><div id="vhgyfmj" class="bigimg"><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 id="322rjbt" 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="fe3vnub" 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)品關鍵詞：</span>學校原子吸收分光光度計,原子吸收分光光度計</p><p><span>***更新：</span>2021-02-01 00:22:04</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="w3dh3np" 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="kgnkmtv" class="page-proshow02"><p class="title">詳細說明</p><div id="qpmjgx8" class="box"><p><p style="text-indent:25px">調(diào)整熄滅器位置的目的在于使其縫口平行于外光路的光軸并位于正下方,以保證空心陰極燈的光束完整經(jīng)過火焰并集聚于火焰中心而取得較高的靈活度。熄滅器的調(diào)整是在靜態(tài)下停止的。常以銅燈(324.1nm)作光源,按前述調(diào)整好燈的位置,調(diào)理負高壓,使透射比為1：100％，然后用儀器附帶的透光檢驗工具或一根火柴棒插入熄滅器縫口里。當對光棒直立在熄滅器縫口的正中心時,透射比應接近0%,否則仍需對熄滅器位置作前后調(diào)整，然后拍對光棒垂直置于縫口兩端,其透射比應降至30%,否則應改動熄滅器轉角直至到達請求為止。當靜態(tài)調(diào)整終了之后,若有必要,可在點火的狀況下,吸噴銅規(guī)范溶液，學校原子吸收分光光度計,調(diào)整熄滅器的前后轉角及其高度，丈量不同位置時的吸光度。對應予大吸光度的位置為位置,但熄滅器不應擋光。由于不同元素的熄滅器高度是不同的，學校原子吸收分光光度計，運用時應依據(jù)不同的元素重新調(diào)理熄滅器高度，學校原子吸收分光光度計。原子吸收分光光度計安全操作須知：儀器室內(nèi)不得使用或存放其他無關的易燃、易爆等危險品。學校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="學校原子吸收分光光度計,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實際應用：1、有機物分析中的應用：利用間接法可以測定多種有機物。8-羥基喹啉(Cu)、醇類(Cr)、醛類(Ag)、酯類(Fe)、酚類(Fe)、聯(lián)乙酰(Ni)、酞酸(Cu)、脂肪胺(co)、氨基酸(Cu)、維生素C(Ni)、氨茴酸(Co)、雷米封(Cu)、甲酸奎寧(Zn)、有機酸酐(Fe)、苯甲基青霉素(Cu)、葡萄糖(Ca)、環(huán)氧化物水解酶(PbO、含鹵素的有機化合物(Ag)等多種有機物，均通過與相應的金屬元素之間的化學計量反應而間接測定。2、金屬化學形態(tài)分析中的應用：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。中國原子吸收分光光度計差價霧化器：霧化器作用是將試液霧化。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="學校原子吸收分光光度計,原子吸收分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988085019176/8464581.png"></div><p style="text-indent:25px">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，若使用氧化亞氮—乙炔火焰，測定的元素可達70多種。但氧化亞氮—乙炔火焰安全性較差，應用不普遍?？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，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。</p><p style="text-indent:25px">原子吸收分光光度計常見的故障解決方法：故障現(xiàn)象：噴霧器鉑金管外管壁局部被堵塞，造成靈敏度下降或重現(xiàn)性變差。產(chǎn)生原因：當火焰分析靈敏度下降時，有些儀器操作者首先會檢查樣品的提升量，以判斷是否是噴霧器的原因，這種做法無疑是正確的。當檢查者發(fā)現(xiàn)樣品的提升量的確是下降了后，自然而然地聯(lián)想到是噴霧器被堵塞之故，于是用儀器附帶的細通絲來清通噴霧器的內(nèi)鉑金管；可是清通后，樣品的提升量并未得到提高，至此陷入了困惑。的確、噴霧器的鉑金管被堵塞是一種常見故障，用通絲清通也往往見效。但是噴霧器另一個隱性故障往往不是鉑金管管腔被堵，而是鉑金管外壁與外襯管間的環(huán)狀出氣縫隙被壓縮空氣中的油水等物所堵塞，造成空氣流通不足或不暢，從而影響到了提升量，這點是許多使用者不清楚的地方。原子吸收分光度計分析樣品優(yōu)點：準確度好。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="學校原子吸收分光光度計,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">原子吸收分光光度計原子化條件：程序升溫的條件選擇:在石墨爐原子化法中，合理選擇干燥、灰化、原子化及除殘溫度與時間是十分重要的。干燥應在稍低于溶劑沸點的溫度下進行，以防止試液飛濺?；一哪康氖浅セw和局外組分，在保證被測元素沒有損失的前提下應盡可能使用較高的灰化溫度。原子化溫度的選擇原則是，選用達到較大吸收信號的較低溫度作為原子化溫度。原子化時間的選擇，應以保證完全原子化為準。原子化階段停止通保護氣，以延長自由原子在石墨爐內(nèi)的平均停留時間。除殘的目的是為了消除殘留物產(chǎn)生的記憶效應，除殘溫度應高于原子化溫度。原子吸收分光光度計安全操作須知：操作人員必須經(jīng)過儀器生產(chǎn)商的操作培訓或持有更高級別職業(yè)資格證書。中國**原子吸收分光光度計排名</p><p style="text-indent:25px">火焰原子吸收分光光度計應用多。學校原子吸收分光光度計</p><p style="text-indent:25px">原子吸收分光光度法常使用哪些定量分析方法?規(guī)范曲線法：先配制相同基體的含有不同濃度待測元素的系列規(guī)范溶液，在選定的實驗條件下分別測其吸光度.以扣除空白值之后的吸光度為縱坐標，規(guī)范溶液濃度為橫坐標繪制規(guī)范曲線。在同樣操作條件下測定試樣溶液的吸光度，從規(guī)范曲線查得試樣溶液的濃度。運用該辦法時應留意：配制的規(guī)范溶液濃度應在吸光度與濃度成線性的范圍內(nèi)；整個剖析過程中操作條件應堅持不變。另外，規(guī)范曲線法固然簡單，但必需保證規(guī)范樣品與試樣的物理性質(zhì)相同，保證不存在干擾物，關于組成尚不分明的樣品不能用規(guī)范曲線法。學校原子吸收分光光度計</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3098286.html</p></div></div></div></div></div><div id="vtamj83" class="page-right twoColRt"><div id="3e2ubov" class="box01 margin10 clearfix"><h3><a 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