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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>分析原子吸收分光光度計(jì)銷(xiāo)售廠家,原子吸收分光光度計(jì)</p><p><span>***更新：</span>2021-01-16 04:13:15</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="qkgc8vg" 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(huà): </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(xiàn)] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="ca3x8y3" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="8k8cp8z" class="box"><p><p style="text-indent:25px">原子吸收分光光度計(jì)是使用多的原子化器，但它很大的缺陷是原子化效率不高，原子蒸氣停留時(shí)刻短，因而火焰中的自在原子濃度很低。原因是霧化效率低，待測(cè)物遭到大量氣體的稀釋?zhuān)约敖饘僭釉诨鹧嬷幸资苎趸饔蒙蔁岚卜€(wěn)的難熔氧化物。另一個(gè)存在的問(wèn)題是火焰中的化學(xué)反應(yīng)不易控制，分析原子吸收分光光度計(jì)銷(xiāo)售廠家，造成火焰溫度不安穩(wěn)，分析原子吸收分光光度計(jì)銷(xiāo)售廠家，火焰各部分的溫度也是不均勻的應(yīng)非原子吸收分光光度計(jì)能夠進(jìn)步原子化效率，進(jìn)步測(cè)量的靈敏度，分析原子吸收分光光度計(jì)銷(xiāo)售廠家。進(jìn)樣量過(guò)小，吸收信號(hào)弱，不便于測(cè)量；進(jìn)樣量過(guò)大，在火焰原子化法中，對(duì)火焰發(fā)生冷卻效應(yīng)，在原子吸收分光光度計(jì)中，會(huì)增加除殘的困難。在實(shí)際作業(yè)中，應(yīng)測(cè)定吸光度隨進(jìn)樣量的變化，到達(dá)很滿(mǎn)意的吸光度的進(jìn)樣量，即為應(yīng)挑選的進(jìn)樣量。原子吸收分光光度計(jì)計(jì)算機(jī)數(shù)據(jù)處理系統(tǒng)使整個(gè)分析實(shí)現(xiàn)自動(dòng)化。分析原子吸收分光光度計(jì)銷(xiāo)售廠家</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="分析原子吸收分光光度計(jì)銷(xiāo)售廠家,原子吸收分光光度計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988150712025/4463747.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(xiàn)挑選：通常選用共振吸收線(xiàn)為剖析線(xiàn)，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(xiàn)為剖析線(xiàn)。As、Se等共振吸收線(xiàn)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(xiàn)為剖析線(xiàn)。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(xiàn)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。常見(jiàn)原子吸收分光光度計(jì)多少錢(qián)原子吸收分光光度計(jì)測(cè)定的元素可達(dá)70多種。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="分析原子吸收分光光度計(jì)銷(xiāo)售廠家,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">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(xiàn)，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(wèn)題之一。</p><p style="text-indent:25px">原子吸收分光光度計(jì)霧化器長(zhǎng)處和故障處理：原子吸收分光光度計(jì)霧化器長(zhǎng)處和毛病處理。1、限流進(jìn)液管阻塞，一般堵在進(jìn)口處，可用手指除掉，或用壓縮空氣反向吹通，或用注射器反向灌水。2.、吸入樣品溶液將盡時(shí)，管內(nèi)形成成串氣泡，阻力很大使吸入中止，用手指彈動(dòng)進(jìn)液管，使氣泡吸走，即可正常，也可用注射器吸走氣泡。3、霧化器內(nèi)管阻塞：長(zhǎng)堵在接近噴口處，取下撞擊球帽，用壓縮空氣或注射器反向灌水沖掉阻塞物，決不行用金屬絲捅，不然將損壞霧化器。原子吸收分光光度計(jì)精密度1%左右。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="分析原子吸收分光光度計(jì)銷(xiāo)售廠家,原子吸收分光光度計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419991236161257/4858141.png"></div><p style="text-indent:25px">原子吸收分光光度計(jì)每次燃燒前檢查廢液管是否打好水封；確認(rèn)水封無(wú)誤時(shí)方可開(kāi)機(jī)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(biāo)識(shí)。必定要運(yùn)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(shí)要更換新瓶。乙炔氣源鄰近禁止明火或過(guò)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(shí)傾倒處理或與當(dāng)?shù)丨h(huán)保部門(mén)。禁止帶電插拔數(shù)據(jù)線(xiàn)纜。原子吸收分光光度計(jì)主要原因是未找到可產(chǎn)生銳線(xiàn)光譜的光源。氮?dú)庠游辗止夤舛扔?jì)怎么樣</p><p style="text-indent:25px">原子吸收分光光度計(jì)實(shí)際效果理想的元素*30余個(gè)。分析原子吸收分光光度計(jì)銷(xiāo)售廠家</p><p style="text-indent:25px">原子吸收分光光度計(jì)的操作步驟：1.翻開(kāi)通風(fēng)，翻開(kāi)儀器主機(jī)。2.翻開(kāi)相關(guān)的操作軟件，點(diǎn)擊電腦桌面上的SpectrAA軟件圖標(biāo)，挑選主界面中的WorkSheet按鈕，挑選"新建"按鈕建立新工作表格，挑選要選用剖析表格的儀器并點(diǎn)擊確定。挑選方針文件夾，依據(jù)要求命名文件，并點(diǎn)擊確定。點(diǎn)擊"增加辦法"按鈕，挑選辦法類(lèi)型為"火焰"。挑選要剖析的元素，并點(diǎn)擊確定。3.雙擊選取的元素或許點(diǎn)擊"修改辦法"按鈕翻開(kāi)辦法對(duì)話(huà)框，挑選進(jìn)樣形式為手動(dòng)，挑選儀器形式為吸收，并點(diǎn)擊下一步，挑選丈量形式為"峰高"，設(shè)定"時(shí)間"、"讀數(shù)次數(shù)"，并點(diǎn)擊下一步。4.設(shè)置"扣布景"，如待測(cè)元素的測(cè)定波長(zhǎng)小于370nm挑選"扣布景開(kāi)"，大于370nm則挑選"扣布景關(guān)"。并點(diǎn)擊下一步。分析原子吸收分光光度計(jì)銷(xiāo)售廠家</p><p style="text-indent:25px">上海儀電分析儀器有限公司主要經(jīng)營(yíng)范圍是儀器儀表，擁有一支專(zhuān)業(yè)技術(shù)團(tuán)隊(duì)和良好的市場(chǎng)口碑。公司業(yè)務(wù)涵蓋分光光度計(jì)，氣相色譜，原子吸收，食品安全等，價(jià)格合理，品質(zhì)有保證。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(zhuān)業(yè)化的隊(duì)伍，確保為客戶(hù)提供良好的產(chǎn)品及服務(wù)。儀電分析秉承“客戶(hù)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(lái)源地址: 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