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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="l997dpn" 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="drpn9h5" 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>上海原子吸收分光光度計代理,原子吸收分光光度計</p><p><span>***更新：</span>2021-01-31 01:17:52</p><p><span id="click" >瀏覽次數(shù)：3次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="ptjhft7" 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="xdbhnbr" class="page-proshow02"><p class="title">詳細說明</p><div id="x95rpfb" class="box"><p><p style="text-indent:25px">原子吸收分光光度計的安全運用留意事項：1，上海原子吸收分光光度計代理、在運輸過程中遭到劇烈碰擊的儀器，上海原子吸收分光光度計代理，主機不能冒然通電。2、長期在惡劣條件寄存的儀器應(yīng)該經(jīng)常維護保養(yǎng)。3、一旦儀器的報警器發(fā)出聲音,應(yīng)當即關(guān)掉氣源，并關(guān)機。4、請您隨時留意，一旦發(fā)生異味，請當即切斷電源，關(guān)掉乙炔鋼瓶總閥門。請將空壓機的空氣管插入燃氣管道中，上海原子吸收分光光度計代理，并涂改肥皂水以檢查燃氣管道各接頭是否漏氣，特別應(yīng)該檢查霧化筒后部的防爆塞是否密封無缺，決不能在發(fā)生漏氣時燃燒操作，否則容易發(fā)生回火爆開。5、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。6、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。7、必定要運用的乙炔專屬減壓閥，并裝有防回火設(shè)備。1965年復(fù)旦大學(xué)電光源實驗室和冶金工業(yè)部有色金屬研究所分別研制成功空心陰極燈光源。上海原子吸收分光光度計代理</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海原子吸收分光光度計代理,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儀器工作原理：將待分析物質(zhì)以適當方法轉(zhuǎn)變?yōu)槿芤?，并將溶液以霧狀引入原子化器。此時，被測元素在原子化器中原子化為基態(tài)原子蒸氣。當光源發(fā)射出的與被測元素吸收波長相同的特征譜線通過基態(tài)原子蒸氣時，光能因被基態(tài)原子所吸收而減弱，其減弱的程度（吸光度）在一定條件下，與基態(tài)原子的數(shù)目（元素濃度）之間的關(guān)系，遵守朗伯-比耳定律。被基態(tài)原子吸收后的譜線，經(jīng)分光系統(tǒng)分光后，由檢測器接收，轉(zhuǎn)換為電信號，再經(jīng)放大器放大，由顯示系統(tǒng)顯示出吸光度或光譜圖。儀器基本結(jié)構(gòu)：原子吸收分光光度計主要由光源、原子化器、單色器、檢測系統(tǒng)和顯示系統(tǒng)等部分組成。食品安全原子吸收分光光度計經(jīng)銷商元素在熱解石墨爐中被加熱原子化，成為基態(tài)原子蒸汽。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海原子吸收分光光度計代理,原子吸收分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419991385859509/5179129.png"></div><p style="text-indent:25px">霧化器是原子化系統(tǒng)的中心部件，剖析的靈活度和精細度比較大水平上取決于霧化器的質(zhì)量。質(zhì)量良好的噴霧器,應(yīng)是霧滴小、霧量大、霧滴勻、噴霧穩(wěn),這取決于吸液毛細管噴口和節(jié)流嘴端面的相對位置和同心度。毛細管和節(jié)流嘴端面相對位置和同心度,應(yīng)在放大鏡下精心調(diào)理。每次調(diào)整效果可經(jīng)過察看霧化情況來判別。正常狀況下,霧滴分開噴嘴后應(yīng)沿毛細管線方向,向前成一錐形,上下左右對稱地散射開。也可經(jīng)過吸噴規(guī)范溶液測定吸光度來判別,直至呈現(xiàn)大吸光度時,行將位置固定下來。需求指出的是,任何時分一定制止在氧化亞氮一乙烘火焰中調(diào)理噴霧器,否則會發(fā)作回火。</p><p style="text-indent:25px">火焰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，若使用氧化亞氮—乙炔火焰，測定的元素可達70多種。但氧化亞氮—乙炔火焰安全性較差，應(yīng)用不普遍?？諝狻胰不鹧嬖游辗止夤舛确ǎ话憧蓹z測到PPm級（10－6），精密度1％左右。國產(chǎn)的火焰原子吸收分光光度計，都可配備各種型號的氫化物發(fā)生器（屬電加熱原子化器），利用氫化物發(fā)生器，可測定砷（As）、銻（Sb）、鍺（Ge）、碲（Te）等元素。一般靈敏度在ng／ml級（10－9），相對標準偏差2％左右。汞(Hg)可用冷原子吸收法測定。原子吸收光譜分析，由于其靈敏度高、干擾少、分析方法簡單快速。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海原子吸收分光光度計代理,原子吸收分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988150712025/4463747.png"></div><p style="text-indent:25px">原子吸收分光光度計與紫外可見分光光度計的區(qū)別：1、光源:紫外可見分光光度計使用的是鎢燈或氘燈發(fā)射連續(xù)光譜。原子吸收分光光度計使用的是空心陰極燈發(fā)射特征波長的銳線光，選擇性會更好。2、檢測器：紫外可見分光光度計一般使用光電管來檢測。而原子吸收分光光度計使用的是光電倍增管，分辨力比光電管強。3、應(yīng)用：原子吸收分光光度計是屬于原子光譜。紫外可見分光光度計屬于分子光譜，兩者都符合朗伯-比耳定律；4、檢出限:原子吸收分光光度計檢出限低，火焰原子吸收法的檢出限可達到ppb級。紫外可見分光光度計如果顯色劑不同則檢出限也不一樣，但每種顯色劑帶來的干擾也會不一樣。由于汞的多應(yīng)用，對大氣中微量汞的測定曾利用原子吸收光譜原理設(shè)計了測汞儀。食品安全原子吸收分光光度計經(jīng)銷商</p><p style="text-indent:25px">原子吸收分光光度計安全操作須知：儀器室內(nèi)不得使用或存放其他無關(guān)的易燃、易爆等危險品。上海原子吸收分光光度計代理</p><p style="text-indent:25px">國統(tǒng)局數(shù)據(jù)顯示，2019年上半年儀器儀表大行業(yè)規(guī)模以上企業(yè)4927個，營收規(guī)模4002億元，營收同比增長7.57%；收入總額為361億元，同比增長2.87%，比主營收入低4.70個百分點；隨著互聯(lián)網(wǎng)的逐步發(fā)展，為分光光度計，氣相色譜，原子吸收，食品安全等產(chǎn)品的傳播提供了一個飛速的平臺。讓儀器儀表行業(yè)從傳統(tǒng)的銷售模式到以互聯(lián)網(wǎng)電子商務(wù)為主的營銷方式的轉(zhuǎn)變，促進了儀器儀表行業(yè)與互聯(lián)網(wǎng)的結(jié)合，推動產(chǎn)業(yè)創(chuàng)新發(fā)展。中國儀器儀表行業(yè)目前正處于高速發(fā)展階段，需要與之相適應(yīng)的儀器儀表、電子元器件及相關(guān)的系統(tǒng)集成的生產(chǎn)、服務(wù)及銷售，計算機軟件開發(fā)及銷售，從事貨物進出口及技術(shù)進出口業(yè)務(wù)。【依法須經(jīng)批準的項目，經(jīng)相關(guān)部門批準后方可開展經(jīng)營活動】儀器儀表、電子元器件及相關(guān)的系統(tǒng)集成的生產(chǎn)、服務(wù)及銷售，計算機軟件開發(fā)及銷售，從事貨物進出口及技術(shù)進出口業(yè)務(wù)。【依法須經(jīng)批準的項目，經(jīng)相關(guān)部門批準后方可開展經(jīng)營活動】產(chǎn)品營銷模式相互配合。從銷售廣義角度來說，儀器儀表也可具有自動操控、報警、信號傳遞和數(shù)據(jù)處理等功能，例如用于工業(yè)生產(chǎn)過程自動操控中的氣動調(diào)節(jié)儀表，和電動調(diào)節(jié)儀表，以及集散型儀表操控系統(tǒng)也皆屬于儀器儀表。上海原子吸收分光光度計代理</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3084836.html</p></div></div></div></div></div><div id="xvdbj77" class="page-right 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