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tcPro"><section class="home-main container clearfix"><div id="yqck99x" class="twoCol"><div id="w74jfwz" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</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>?教學(xué)原子吸收分光光度計(jì)廠家供應(yīng) 來電咨詢上海儀電分析儀器供應(yīng)</p><div id="l4xxvwr" class="leftbox clearfix"><h1>教學(xué)原子吸收分光光度計(jì)廠家供應(yīng) 來電咨詢上海儀電分析儀器供應(yīng)</h1><div id="ss3arn8" class="proBig"><div id="f9k84tr" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419991291551872/1267970.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="kutc0wr" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419991291551872/1267970.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="vppbukq" 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>教學(xué)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>2020-12-30 00:24:48</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="ol3yuvk" 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="lpy833k" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="iujkdoz" class="box"><p><p style="text-indent:25px">原子吸收分光光度計(jì)的工作原理：原子吸收光譜儀又稱原子吸收分光光度計(jì)，根據(jù)物質(zhì)基態(tài)原子蒸汽對(duì)特征輻射吸收的作用來進(jìn)行金屬元素分析。它能夠靈敏可靠地測(cè)定微量或痕量元素，教學(xué)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)一般由四大部分組成，即光源(單色銳線輻射源)、試樣原子化器、單色儀和數(shù)據(jù)處理系統(tǒng)(包括光電轉(zhuǎn)換器及相應(yīng)的檢測(cè)裝置)。元素在熱解石墨爐中被加熱原子化，成為基態(tài)原子蒸汽，教學(xué)原子吸收分光光度計(jì)廠家供應(yīng)，教學(xué)原子吸收分光光度計(jì)廠家供應(yīng)，對(duì)空心陰極燈發(fā)射的特征輻射進(jìn)行選擇性吸收。在一定濃度范圍內(nèi)，其吸收強(qiáng)度與試液中被的含量成正比。原子吸收分光光度計(jì)一般可檢測(cè)到PPm級(jí)（10-6）。教學(xué)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="教學(xué)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/ydfx123/637419991291551872/1267970.png"></div><p style="text-indent:25px">在原子化進(jìn)程中，用高達(dá)數(shù)百安培電流加熱石墨管，在一秒鐘內(nèi)使之達(dá)到2000℃～3000℃，樣品在如此短的時(shí)刻被加熱蒸騰、解離成分子、原子蒸氣是一個(gè)急速分散脹大改變進(jìn)程。石墨管內(nèi)待測(cè)元素原子和共存物質(zhì)蒸氣的濃度具有激烈的時(shí)空特性，即管內(nèi)不同點(diǎn)的濃度隨時(shí)刻而急速改變，同一時(shí)刻不同方位的濃度也不同。用快速響應(yīng)檢測(cè)電路系統(tǒng)取得的原子吸收和背景吸收信號(hào)是兩條隨時(shí)刻改變的曲線，這便是原子化信號(hào)的瞬態(tài)性。這一點(diǎn)與火焰法的安穩(wěn)信號(hào)完全不同。此外，原子化進(jìn)程的瞬態(tài)信號(hào)還受制于石墨管的時(shí)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。教學(xué)原子吸收分光光度計(jì)廠家供應(yīng)火焰原子化法的優(yōu)點(diǎn)是：火焰原子化法的操作簡(jiǎn)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="教學(xué)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/ydfx123/637419988246893719/5353894.png"></div><p style="text-indent:25px">你知道怎樣正確挑選原子吸收分光光度計(jì)嗎？1.剖析線挑選：通常選用共振吸收線為剖析線，測(cè)定高含量元素時(shí)，能夠選用靈敏度較低的非共振吸收線為剖析線。As、Se等共振吸收線位于200nm以下的遠(yuǎn)紫外區(qū)，火焰組分對(duì)其有明顯吸收，故用火焰原子吸收法測(cè)定這些元素時(shí)，不宜選用共振吸收線為剖析線。2.狹縫寬度挑選：狹縫寬度影響光譜通帶寬度與檢測(cè)器接受的能量。原子吸收分光光度計(jì)中，光譜堆疊干擾的幾率小，能夠答應(yīng)運(yùn)用較寬的狹縫。調(diào)節(jié)不同的狹縫寬度，測(cè)定吸光度隨狹縫寬度而變化，當(dāng)有其它的譜線或非吸收光進(jìn)入光譜通帶內(nèi)，吸光度將當(dāng)即減小。不引起吸光度減小的很大狹縫寬度，即為應(yīng)選取的合適的狹縫寬度。</p><p style="text-indent:25px">原子吸收分光光度計(jì)如主機(jī)有加輔佐助燃?xì)獾耐ǖ?，?yīng)將輔佐助燃?xì)怅P(guān)斷，不然未參與噴霧的助燃?xì)饪墒轨`敏度下降，過大的助燃?xì)饬髁坎坏馁M(fèi)燃?xì)?，乃至不能點(diǎn)著火焰。原子吸收分光光度計(jì)一切霧化器之間不能呼喚撞擊球帽，不然靈敏度下降很大。原子吸收分光光度計(jì)運(yùn)轉(zhuǎn)的的攪擾有哪些物理攪擾：物理攪擾是指試樣在轉(zhuǎn)移、蒸發(fā)和原子化過程中，原子吸收分光光度計(jì)由于試樣任何物理特性（如粘度、表面張力、密度等）的變化而引起的原子吸收強(qiáng)度下降的效應(yīng)。石墨爐法，進(jìn)樣量少，靈敏度高，有的元素也可以分析到pg/mL級(jí)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="教學(xué)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)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(dá)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(qiáng)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(qiáng)且安穩(wěn)的光強(qiáng)輸出條件下，盡量運(yùn)用較低的作業(yè)電流。通常以空心陰方燈上標(biāo)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(chǎng)合，很適宜的作業(yè)電流由實(shí)驗(yàn)確定。原子吸收分光光度計(jì)由于儀器使用中，需用乙炔、氫氣、氬氣、氧化亞氮（俗稱笑氣）等。雙光束原子吸收分光光度計(jì)現(xiàn)貨</p><p style="text-indent:25px">原子吸收分光光度計(jì)測(cè)定的元素可達(dá)70多種。教學(xué)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)翻開乙炔鋼瓶總閥，查看是否漏氣，長(zhǎng)按焚燒開關(guān)，直至焚燒成功。將進(jìn)樣管放到裝有規(guī)范空白溶液的試劑瓶中，點(diǎn)擊"開端"按鈕，把進(jìn)樣管放到不同的試劑瓶中吸取對(duì)應(yīng)的溶液，并點(diǎn)擊"讀數(shù)"按鈕，點(diǎn)擊"打印機(jī)"按鈕，設(shè)置對(duì)應(yīng)的參數(shù)，并點(diǎn)擊"打印預(yù)覽"按鈕，點(diǎn)擊打印。挑選主界面的Worksheet按鈕，挑選剖析菜單，點(diǎn)擊"火焰實(shí)用工具"按鈕，點(diǎn)擊"封閉元素?zé)?按鈕。封閉乙炔氣閥，焚燒，把管道中殘缺的乙炔焚燒完。封閉空氣壓縮機(jī)，封閉排水。封閉軟件，點(diǎn)擊"文件"按鈕，點(diǎn)擊"封閉所有文件"按鈕，點(diǎn)擊"EXIT"按鈕。封閉儀器主機(jī)電源，封閉通風(fēng)器。教學(xué)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致力于儀器儀表，是一家生產(chǎn)型的公司。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。公司秉持誠(chéng)信為本的經(jīng)營(yíng)理念，在儀器儀表深耕多年，以技術(shù)為先導(dǎo)，以自主產(chǎn)品為重點(diǎn)，發(fā)揮人才優(yōu)勢(shì)，打造儀器儀表良好品牌。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(yíng)理念，全力打造公司的重點(diǎn)競(jìng)爭(zhēng)力。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2617883.html</p></div></div></div></div></div><div id="wzzqto8" class="page-right twoColRt"><div 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