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clearfix"><h1>實(shí)驗(yàn)室原子吸收分光光度計(jì)廠家供應(yīng) 服務(wù)為先上海儀電分析儀器供應(yīng)</h1><div id="m83axef" class="proBig"><div id="xfbnit7" class="bigimg"><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 id="seffbct" 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="ohiz8sy" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)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>實(shí)驗(yàn)室原子吸收分光光度計(jì)廠家供應(yīng),原子吸收分光光度計(jì)</p><p><span>***更新：</span>2021-01-18 08:12:35</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="dbc2ri3" 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(jī): </span>021-34530361</p><p><span>地址: </span>徐塘路88號(hào)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="3x3frn3" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="bdt4kbn" class="box"><p><p style="text-indent:25px">原子吸收分光光度計(jì)運(yùn)用也有一定的局限性，即每種待測元素都要有一個(gè)能發(fā)射特定波長譜線的光源，實(shí)驗(yàn)室原子吸收分光光度計(jì)廠家供應(yīng)。原子吸收分光光度計(jì)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完成，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行抱負(fù)，因而實(shí)際效果抱負(fù)的元素*30余個(gè)；因?yàn)閮x器運(yùn)用中，需用乙炔，實(shí)驗(yàn)室原子吸收分光光度計(jì)廠家供應(yīng)、氫氣、氬氣，實(shí)驗(yàn)室原子吸收分光光度計(jì)廠家供應(yīng)、氧化亞氮等，操作中有必要注意。靈敏度高、檢出限低由于試樣直接注入石墨管內(nèi)，樣品幾乎全部蒸騰并參與吸收試樣原子化是在惰性氣體維護(hù)下，還原性氣氛的石墨管內(nèi)進(jìn)行的，有利于難熔氧化物的分化和自在原子的形成，自在原子在石墨管內(nèi)平均停留時(shí)刻長，因而管內(nèi)自在原子密度高，肯定靈敏度達(dá)10-12～10-14g。表1列出了石墨爐原子化法與火焰原子化法的靈敏度比較。很長一段時(shí)間，原子吸收主要局限于天體物理方面的研究。實(shí)驗(yàn)室原子吸收分光光度計(jì)廠家供應(yīng)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="實(shí)驗(yàn)室原子吸收分光光度計(jì)廠家供應(yīng),原子吸收分光光度計(jì)" 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(jì)噴口氣流通道阻塞：可取下撞擊球帽用反向氣流或水沖刷，也可用注射器灌水沖刷。噴口內(nèi)管或氣流通道被有機(jī)質(zhì)、積累的灰塵或干涸的鹽類等阻塞，可取下撞擊球帽將噴口刺進(jìn)加熱或發(fā)煙的硫酸－重鉻酸鉀溶液中幾秒鐘，冷后用水沖刷（留意：不行使洗液進(jìn)入霧化器內(nèi)部），運(yùn)用半年以上或發(fā)現(xiàn)流量削減，也應(yīng)照此處理。原子吸收分光光度計(jì)每次運(yùn)用結(jié)束，用蒸餾水吸噴2～3分鐘（不行用自來水防止溶液干涸阻塞）。工作室溫不行低于10度，不然噴口的降溫效果可使溶液結(jié)冰阻塞霧化器。實(shí)驗(yàn)室原子吸收分光光度計(jì)廠家供應(yīng)原子吸收分光光度計(jì)對空心陰極燈發(fā)射的特征輻射進(jìn)行選擇性吸收。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="實(shí)驗(yàn)室原子吸收分光光度計(jì)廠家供應(yīng),原子吸收分光光度計(jì)" 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(jì)電子體系。在該體系中首要有放大器和A/D變換器等組成，其間放大器便是影響整機(jī)靈敏度和穩(wěn)定性的首要相關(guān)部件。原子吸收分光光度計(jì)輸出打印體系和數(shù)據(jù)處理體系。該體系是決定整機(jī)自動(dòng)化程度的要害部件，可以直接影響紫外可見分光光度計(jì)的質(zhì)量。原子吸收分光光度計(jì)操作注意事項(xiàng):留意進(jìn)樣針的清洗,如果是進(jìn)樣針沾污或許導(dǎo)致液體由于分子張力直接沿著進(jìn)樣針向上走,不能全部加入到管中.留意由于石墨管進(jìn)樣空大小改變,跟著加熱次數(shù)增加,會(huì)有積碳在進(jìn)樣孔結(jié)塊,導(dǎo)致孔變小,導(dǎo)致樣品加入時(shí)不能加入到管壁外面,乃至或許會(huì)呈現(xiàn)進(jìn)樣針插不進(jìn)管子。</p><p style="text-indent:25px">原子吸收分光光度計(jì)程序升溫的條件選擇：在原子吸收分光光度計(jì)中，合理選擇干燥、灰化、原子化及除殘溫度與時(shí)間是十分重要的。干燥應(yīng)在稍低于溶劑沸點(diǎn)的溫度下進(jìn)行，以避免試液飛濺。灰化的意圖是除去基體和局外組分，在保證被測元素沒有丟失的前提下應(yīng)盡或許運(yùn)用較高的灰化溫度。原子化溫度的選擇原則是，選用達(dá)到很大吸收信號(hào)的很低溫度作為原子化溫度。原子化時(shí)間的選擇，應(yīng)以保證完全原子化為準(zhǔn)。原子化階段停止通維護(hù)氣，以延伸自由原子在石墨爐內(nèi)的平均停留時(shí)間。除殘的意圖是為了消除殘留物發(fā)生的記憶效應(yīng)，除殘溫度應(yīng)高于原子化溫度。原子吸收光譜分析工作原理：利用待測元素的共振輻射。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="實(shí)驗(yàn)室原子吸收分光光度計(jì)廠家供應(yīng),原子吸收分光光度計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988085019176/8464581.png"></div><p style="text-indent:25px">原子吸收在食品分析中越來越多。食品和飲料中的20多種元素已有滿意的原子吸收分析方法。生化和臨床樣品中必需元素和有害元素的分析現(xiàn)已采用原子吸收法。有關(guān)石油產(chǎn)品、陶瓷、農(nóng)業(yè)樣品、藥物和涂料中金屬元素的原子吸收分析的文獻(xiàn)報(bào)道近些年來越來越多。水體和大氣等環(huán)境樣品的微量金屬元素分析已成為原子吸收分析的重要領(lǐng)域之一。利用間接原子吸收法尚可測定某些非金屬元素。有機(jī)物分析中的應(yīng)用：利用間接法可以測定多種有機(jī)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(jī)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(jī)化合物(Ag)等多種有機(jī)物，均通過與相應(yīng)的金屬元素之間的化學(xué)計(jì)量反應(yīng)而間接測定。原子吸收分析中，首先要使待測元素呈原子狀態(tài)。司法檢測原子吸收分光光度計(jì)代理</p><p style="text-indent:25px">氣態(tài)的原子能發(fā)射某些特征譜線，也能吸收同樣波長的這些譜線。實(shí)驗(yàn)室原子吸收分光光度計(jì)廠家供應(yīng)</p><p style="text-indent:25px">原子吸收分光光度計(jì)使用的首要限制是：該法只能進(jìn)行無機(jī)元素的含量剖析，不能直接用于有機(jī)化合物的含量剖析和結(jié)構(gòu)剖析;別的，慣例原子吸收分光光度計(jì)每測一種元素，要替換一次空心陰極燈光源，不能同時(shí)進(jìn)行多元素剖析。所用儀器為原子吸收分光光度計(jì)，它由光源、原子化器、單色器、背景校正系統(tǒng)、自動(dòng)進(jìn)樣系統(tǒng)和檢測系統(tǒng)等組成。原子吸收分光光度計(jì)通常人體所需的常量或痕量元素以必定的濃度散布在人的體液和各種中，在人的生活動(dòng)中起著不可或缺的作用，其主要生理功能是構(gòu)成人體的組成部分，也是酶和維生素的組成部分。實(shí)驗(yàn)室原子吸收分光光度計(jì)廠家供應(yīng)</p><p style="text-indent:25px">上海儀電分析儀器有限公司位于徐塘路88號(hào)7幢4層、9幢。公司自成立以來，以質(zhì)量為發(fā)展，讓匠心彌散在每個(gè)細(xì)節(jié)，公司旗下分光光度計(jì)，氣相色譜，原子吸收，食品安全深受客戶的喜愛。公司從事儀器儀表多年，有著創(chuàng)新的設(shè)計(jì)、強(qiáng)大的技術(shù)，還有一批**的專業(yè)化的隊(duì)伍，確保為客戶提供良好的產(chǎn)品及服務(wù)。儀電分析秉承“客戶為尊、服務(wù)為榮、創(chuàng)意為先、技術(shù)為實(shí)”的經(jīng)營理念，全力打造公司的重點(diǎn)競爭力。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2900551.html</p></div></div></div></div></div><div id="tri4qqh" class="page-right twoColRt"><div id="gjfjubx" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="3mfjye7" 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