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clearfix"><div id="akw2ace" class="twoCol"><div id="k42oseq" 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>?中國**原子吸收分光光度計(jì)對(duì)比服務(wù)為先上海儀電分析儀器供應(yīng)</p><div id="mku4m2w" class="leftbox clearfix"><h1>中國**原子吸收分光光度計(jì)對(duì)比服務(wù)為先上海儀電分析儀器供應(yīng)</h1><div id="o204uoi" class="proBig"><div id="auwim2i" 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="42eo22s" 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="amimqis" 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>中國**原子吸收分光光度計(jì)對(duì)比,原子吸收分光光度計(jì)</p><p><span>***更新：</span>2021-01-28 03:11:29</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="ccociuq" 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="qkwimiu" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="iqmiuqm" 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定微量或痕量元素。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)的檢測裝置)。元素在熱解石墨爐中被加熱原子化，中國**原子吸收分光光度計(jì)對(duì)比，成為基態(tài)原子蒸汽，中國**原子吸收分光光度計(jì)對(duì)比，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)，中國**原子吸收分光光度計(jì)對(duì)比，其吸收強(qiáng)度與試液中被的含量成正比。原子吸收分光度計(jì)分析樣品優(yōu)點(diǎn)：靈敏度高。中國**原子吸收分光光度計(jì)對(duì)比</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="中國**原子吸收分光光度計(jì)對(duì)比,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">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(fù)高壓,使透射比為1：100％，然后用儀器附帶的透光檢驗(yàn)工具或一根火柴棒插入熄滅器縫口里。當(dāng)對(duì)光棒直立在熄滅器縫口的正中心時(shí),透射比應(yīng)接近0%,否則仍需對(duì)熄滅器位置作前后調(diào)整，然后拍對(duì)光棒垂直置于縫口兩端,其透射比應(yīng)降至30%,否則應(yīng)改動(dòng)熄滅器轉(zhuǎn)角直至到達(dá)請(qǐng)求為止。當(dāng)靜態(tài)調(diào)整終了之后,若有必要,可在點(diǎn)火的狀況下,吸噴銅規(guī)范溶液,調(diào)整熄滅器的前后轉(zhuǎn)角及其高度，丈量不同位置時(shí)的吸光度。對(duì)應(yīng)予大吸光度的位置為位置,但熄滅器不應(yīng)擋光。由于不同元素的熄滅器高度是不同的，運(yùn)用時(shí)應(yīng)依據(jù)不同的元素重新調(diào)理熄滅器高度。工業(yè)原子吸收分光光度計(jì)多少錢在一定范圍內(nèi)增大燈電流可以增大輻射強(qiáng)度，同時(shí)噪音也增大，但是儀器靈敏度降低。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="中國**原子吸收分光光度計(jì)對(duì)比,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">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)。</p><p style="text-indent:25px">原子吸收分光光度計(jì)安全操作須知：實(shí)驗(yàn)室高壓氣體的安全管理。1.建議將氣瓶安裝在不受陽光直接照射的室外。2.注意不能讓氣瓶的溫度超過40°C，并且2m之內(nèi)不得有明火。3.氣瓶安放位置需牢靠穩(wěn)固，避免氣瓶翻倒、強(qiáng)烈震動(dòng)、擊撞或受強(qiáng)外力等情況的發(fā)生。4.氣瓶不得倒置、橫放或大幅度傾斜，需時(shí)刻保持直立。5.使用乙炔前，請(qǐng)安裝由正規(guī)廠家生產(chǎn)的乙炔專屬減壓閥。為了防止金屬和乙炔發(fā)生化合作用，請(qǐng)不要使用銅、銀、汞以及它們的合金做成的管道。這些化合物與乙炔會(huì)生成金屬乙炔化物，受到?jīng)_擊后可能分解而爆開。6.乙炔氣瓶含有可溶解性的物質(zhì)。若氣瓶內(nèi)壓力低于0.50MPa,為了避免可溶解性物質(zhì)的擴(kuò)散，請(qǐng)更換新的乙炔氣瓶。原子吸收分光光度計(jì)檢出限低，火焰原子吸收法的檢出限可達(dá)到ppb級(jí)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="中國**原子吸收分光光度計(jì)對(duì)比,原子吸收分光光度計(jì)" 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(jì)可普遍應(yīng)用于食品、醫(yī)藥、環(huán)境、生物、農(nóng)業(yè)、石油化工、建筑、材料、地質(zhì)、冶金、科研等領(lǐng)域。一、原子吸收火焰法：原子吸收的火焰法作為一種較常用的分析方法被普遍的使用，對(duì)于一些常見的，含量在一定可測范圍內(nèi)金屬元素而言，火焰原子吸收法簡單而快捷，結(jié)果的準(zhǔn)確度非常高。二、原子吸收石墨爐法：原子吸收石墨爐法是原子吸收應(yīng)用中較經(jīng)典的方法，一般的石墨爐可以瞬時(shí)升溫至3000℃，對(duì)于一些含量極低的或者一些高溫元素的定量檢測十分有效，甚至比較多儀器和分析**認(rèn)為，之所以原子吸收分光光度計(jì)沒有被淘汰至今還在普遍的適用正是因?yàn)樵游盏氖珷t法的精度及較小檢測極限是目前所有測試方法中幾乎無可替代的。三、原子吸收氫化物法：也稱冷原子法，一般用于測定汞、砷之類的元素。所以在原子吸收分光光度計(jì)的選擇上，我們首先要選定主要是用哪一種方法去做金屬元素的含量測定，然后根據(jù)測定方法去確定原子吸收分光光度計(jì)的配置。原子吸收分光光度計(jì)存在理化方面的干擾。甲醇原子吸收分光光度計(jì)廠家</p><p style="text-indent:25px">原子吸收分光光度計(jì)安全操作須知：建議將氣瓶安裝在不受陽光直接照射的室外。中國**原子吸收分光光度計(jì)對(duì)比</p><p style="text-indent:25px">原子吸收分光光度計(jì)的優(yōu)點(diǎn)是：（1）檢出限低，靈敏度高?；鹧嬖游辗ǖ臋z出限可達(dá)10-9g（ppm級(jí)），石墨爐原子吸收法更高，可達(dá)ppb級(jí)。（2）丈量精度好?；鹧嬖游辗y定中等和高含量元素的相對(duì)偏差可小于0.01，丈量精度已接近于經(jīng)典化學(xué)辦法。石墨爐原子吸收法的丈量精度一般為3-5。樣品由載氣（氬）帶入霧化系統(tǒng)進(jìn)行霧化后，以氣溶膠形式進(jìn)入等離子體的軸向通道，在高溫文惰性氣氛中被充沛蒸騰、原子化、電離和激起，發(fā)射出所含元素的特征譜線。依據(jù)特征譜線的存在與否，鑒別樣品中是否含有某種元素（定性分析）；根依據(jù)特征譜線強(qiáng)度確定樣品中相應(yīng)元素的含量（定量分析）。中國**原子吸收分光光度計(jì)對(duì)比</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3042449.html</p></div></div></div></div></div><div id="k4ikws2" class="page-right twoColRt"><div id="2qsmyc0" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="8eimi2u" 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(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" 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