元素原子吸收分光光度計性價比真誠推薦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的兩大特色：1.選擇性強。因為原子吸收分光光度計譜線*發(fā)生在主線系，并且譜線很窄，線重疊幾率較發(fā)射光譜要小得多，所以光譜攪擾較小選擇性強，并且光譜攪擾簡單戰(zhàn)勝。在大多數(shù)情況下，共存元素不對原子吸收分光光度計剖析發(fā)生攪擾。因"><meta name="keywords" content="元素原子吸收分光光度計性價比,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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id="mqnkcti" class="leftbox clearfix"><h1>元素原子吸收分光光度計性價比真誠推薦上海儀電分析儀器供應(yīng)</h1><div id="ynphjfm" class="proBig"><div id="7wtqxpz" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988085019176/8464581.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="2wyfhyf" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988085019176/8464581.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="tnpryax" 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性價比,原子吸收分光光度計</p><p><span>***更新：</span>2021-01-23 04:23:54</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="yiubyf8" 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="3dkmzl8" class="page-proshow02"><p class="title">詳細說明</p><div id="xgnkmo7" class="box"><p><p style="text-indent:25px">原子吸收分光光度計的兩大特色：1.選擇性強。因為原子吸收分光光度計譜線*發(fā)生在主線系，并且譜線很窄，線重疊幾率較發(fā)射光譜要小得多，所以光譜攪擾較小選擇性強，并且光譜攪擾簡單戰(zhàn)勝。在大多數(shù)情況下，共存元素不對原子吸收分光光度計剖析發(fā)生攪擾。因為選擇性強，使得剖析精細快速。即每種待測元素都要有一個能發(fā)射特定波長譜線的光源。原子吸收分光光度計剖析中，首要要使待測元素呈原子狀態(tài)，而原子化往往是將溶液噴霧到火焰中去實現(xiàn)，元素原子吸收分光光度計性價比，這就存在理化方面的攪擾，使對難溶元素的測定靈敏度還不夠抱負，因此實際效果抱負的元素*30余個；因為儀器運用中，需用乙炔，元素原子吸收分光光度計性價比、氫氣，元素原子吸收分光光度計性價比、氬氣、氧化亞氮等，操作中需要注意。原子吸收分光光度計對空心陰極燈發(fā)射的特征輻射進行選擇性吸收。元素原子吸收分光光度計性價比</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性價比,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">在原子化進程中，用高達數(shù)百安培電流加熱石墨管，在一秒鐘內(nèi)使之達到2000℃～3000℃，樣品在如此短的時刻被加熱蒸騰、解離成分子、原子蒸氣是一個急速分散脹大改變進程。石墨管內(nèi)待測元素原子和共存物質(zhì)蒸氣的濃度具有激烈的時空特性，即管內(nèi)不同點的濃度隨時刻而急速改變，同一時刻不同方位的濃度也不同。用快速響應(yīng)檢測電路系統(tǒng)取得的原子吸收和背景吸收信號是兩條隨時刻改變的曲線，這便是原子化信號的瞬態(tài)性。這一點與火焰法的安穩(wěn)信號完全不同。此外，原子化進程的瞬態(tài)信號還受制于石墨管的時刻和空間溫度特性，此乃人們感興趣也是研究很多的問題之一。材料原子吸收分光光度計怎么樣火焰原子化法的優(yōu)點是：火焰原子化法的操作簡便，重現(xiàn)性好，有效光程大。</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性價比,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每次燃燒前檢查廢液管是否打好水封；確認水封無誤時方可開機燃燒。乙炔鋼瓶放置在接近儀器室的房間內(nèi)，保持空氣流通，并應(yīng)有防火標識。必定要運用的乙炔**減壓閥，并裝有防回火設(shè)備。乙炔減壓閥的出口壓力為0.07MPa，不能大于0.1MPa，空氣出口壓力在0.25-0.3MPa。鋼瓶壓力顯示低于0.3MPa時要更換新瓶。乙炔氣源鄰近禁止明火或過熱高溫物體寄存，乙炔氣源不應(yīng)與氧化性氣源同放。排放的廢液應(yīng)及時傾倒處理或與當?shù)丨h(huán)保部門。禁止帶電插拔數(shù)據(jù)線纜。</p><p style="text-indent:25px">原子吸收光譜儀配件的根本原理儀器從光源輻射出具有待測元素特征譜線的光，經(jīng)過試樣蒸氣時被蒸氣中待測元素基態(tài)原子所吸收，由輻射特征譜線光被削弱的程度來測定試樣中待測元素的含量。原子吸收光譜儀配件的使用因原子吸收光譜儀的活絡(luò)、準確、簡潔等特點，現(xiàn)已多用于冶金、地質(zhì)、采礦、石油、輕工、農(nóng)業(yè)、醫(yī)藥、衛(wèi)生、食物及環(huán)境監(jiān)測等方面的常量及微痕量元素剖析。原子吸收光譜法是根據(jù)從光源發(fā)射的待測元素的特征輻射經(jīng)過樣品蒸氣時,被蒸氣中待測元素的基態(tài)原子所吸收,根據(jù)輻射強度的削弱程度以求得樣品中待測元素的含量。原子吸收分光光度計存在理化方面的干擾。</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性價比,原子吸收分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419991326259040/7441452.png"></div><p style="text-indent:25px">原子吸收分光光度計做火焰剖析時，如果發(fā)生回火，應(yīng)立即封閉燃氣，避免引起傷害，確保人身和產(chǎn)業(yè)的安危。然后再將儀器開關(guān)、調(diào)節(jié)設(shè)備恢復到發(fā)動前的狀況，待查明回火原因并采納相應(yīng)措施后再持續(xù)使用。在做石墨爐剖析時，如遇到突然停水，應(yīng)敏捷切斷主電源，避免燒壞石墨爐。儀器工作時，如果遇到突然停電，此刻如正在做火焰剖析，則應(yīng)敏捷封閉燃氣;若正在做石墨爐剖析時，則敏捷切斷主機電源;然后將儀器各部分的操控機構(gòu)恢復到停機狀況，待通電后，再按儀器的操作程序重新開啟。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。甲醇原子吸收分光光度計怎么樣</p><p style="text-indent:25px">原子吸收分光光度計基本結(jié)構(gòu)包括光源，原子化器，光學系統(tǒng)和檢測系統(tǒng)。元素原子吸收分光光度計性價比</p><p style="text-indent:25px">原子吸收分光光度計的開展：1981年原子吸收分光光度計完成操作自動化。1984年首臺連續(xù)氫化物發(fā)生器面世。1990年推出世界上先進的MarkV1焰燃燒頭。1995年在線火焰自動進樣器（SIPS8）研制成功并投入運用。1998年首臺快速剖析火焰原子吸收220FS誕生。2002年世界上**火焰和石墨爐同時剖析的原子吸收光譜儀出產(chǎn)并投放市場。原子吸收分光光度計怎樣用才正確？該崗位群主要是散布于冶金、環(huán)保、食物、制藥、醫(yī)療衛(wèi)生、化學、化工、農(nóng)業(yè)等領(lǐng)域，主要從事環(huán)境和產(chǎn)品中金屬物質(zhì)的檢驗以及科學研制的質(zhì)量操控等工作。元素原子吸收分光光度計性價比</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2969349.html</p></div></div></div></div></div><div id="e7tzmji" class="page-right twoColRt"><div id="qah7ulc" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="b7rol2a" 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" 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