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class="button">聯(lián)系我們</a></div></div><div id="vfghhxm" 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="kk7jn8e" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="xqw7287" class="box"><p><p style="text-indent:25px">將試樣中待測元素變成氣態(tài)的基態(tài)原子的過程稱為試樣的“原子化”。完成試樣原子化所用的設(shè)備稱為原子化器或原子化系統(tǒng)。試樣中被測元素原子化的方法主要有火焰原子化法和非火焰原子化法兩種。火焰原子化法利用火焰熱能使試樣轉(zhuǎn)化為氣態(tài)原子，分析檢測原子吸收分光光度計(jì)儀器，分析檢測原子吸收分光光度計(jì)儀器。非火焰原子化法利用電加熱或化學(xué)還原等方式使試樣轉(zhuǎn)化為氣態(tài)原子。原子化系統(tǒng)在原子吸收分光光度計(jì)中是一個(gè)關(guān)鍵裝置，它的質(zhì)量對(duì)原子吸收光譜分析法的靈敏度和準(zhǔn)確度有比較大影響，分析檢測原子吸收分光光度計(jì)儀器，甚至起到?jīng)Q定性的作用，也是分析誤差較大的一個(gè)來源。原子吸收分光光度計(jì)安全操作須知：點(diǎn)火前排風(fēng)裝置必須打開。分析檢測原子吸收分光光度計(jì)儀器</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="分析檢測原子吸收分光光度計(jì)儀器,原子吸收分光光度計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988134237392/1056352.png"></div><p style="text-indent:25px">原子吸收分光光度計(jì)的實(shí)際應(yīng)用：1、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。2、金屬化學(xué)形態(tài)分析中的應(yīng)用：通過氣相色譜和液體色譜分離然后以原子吸收光譜加以測定，可以分析同種金屬元素的不同有機(jī)化合物。例如汽油中5種烷基鉛，大氣中的5種烷基鉛、烷基硒、烷基胂、烷基錫，水體中的烷基胂、烷基鉛、烷基揭、烷基汞、有機(jī)鉻，生物中的烷基鉛、烷基汞、有機(jī)鋅、有機(jī)銅等多種金屬有機(jī)化合物，均可通過不同類型的光譜原子吸收聯(lián)用方式加以鑒別和測定。便攜原子吸收分光光度計(jì)設(shè)備原子吸收光譜儀分析中的干擾效應(yīng)：電離干擾。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="分析檢測原子吸收分光光度計(jì)儀器,原子吸收分光光度計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419991252020619/9480950.png"></div><p style="text-indent:25px">原子吸收分光光度計(jì)與紫外可見分光光度計(jì)的區(qū)別：1、光源:紫外可見分光光度計(jì)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(jì)使用的是空心陰極燈發(fā)射特征波長的銳線光，選擇性會(huì)更好。2、檢測器：紫外可見分光光度計(jì)一般使用光電管來檢測。而原子吸收分光光度計(jì)使用的是光電倍增管，分辨力比光電管強(qiáng)。3、應(yīng)用：原子吸收分光光度計(jì)是屬于原子光譜。紫外可見分光光度計(jì)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(jì)檢出限低，火焰原子吸收法的檢出限可達(dá)到ppb級(jí)。紫外可見分光光度計(jì)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(huì)不一樣。</p><p style="text-indent:25px">原子吸收光譜儀分析中的干擾效應(yīng)：1.物理干擾：物理干擾是指試樣在轉(zhuǎn)移、蒸發(fā)和原子化過程中，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)。物理干擾是非選擇性干擾，對(duì)試樣各元素的影響基本是相似的。配制與被測試樣相似組成的標(biāo)準(zhǔn)樣品，是消除物理干擾較常用的方法。在不知道試樣組成或無法匹配試樣時(shí)，可采用標(biāo)準(zhǔn)加入法或稀釋法來減小和消除物理干擾。2.化學(xué)干擾：化學(xué)干擾是由于液相或氣相中被測元素的原子與干擾物質(zhì)組分之間形成熱力學(xué)更穩(wěn)定的化合物，從而影響被測元素化合物的解離及其原子化。磷酸根對(duì)鈣的干擾，硅、鈦形成難解離的氧化物、鎢、硼、希土元素等生成難解離的碳化物，從而使有關(guān)元素不能有效原子化，都是化學(xué)干擾的例子?；瘜W(xué)干擾是一種選擇性干擾。原子吸收分光光度計(jì)有單光束，雙光束，雙波道，多波道等結(jié)構(gòu)形式。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="分析檢測原子吸收分光光度計(jì)儀器,原子吸收分光光度計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419991311337342/3521940.png"></div><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)型號(hào)繁多，不同型號(hào)儀器性能和應(yīng)用范圍不同。專業(yè)原子吸收分光光度計(jì)現(xiàn)貨</p><p style="text-indent:25px">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。分析檢測原子吸收分光光度計(jì)儀器</p><p style="text-indent:25px">原子吸收分光光度計(jì)常見的故障解決方法：故障現(xiàn)象：噴霧器鉑金管外管壁局部被堵塞，造成靈敏度下降或重現(xiàn)性變差。產(chǎn)生原因：當(dāng)火焰分析靈敏度下降時(shí)，有些儀器操作者首先會(huì)檢查樣品的提升量，以判斷是否是噴霧器的原因，這種做法無疑是正確的。當(dāng)檢查者發(fā)現(xiàn)樣品的提升量的確是下降了后，自然而然地聯(lián)想到是噴霧器被堵塞之故，于是用儀器附帶的細(xì)通絲來清通噴霧器的內(nèi)鉑金管；可是清通后，樣品的提升量并未得到提高，至此陷入了困惑。的確、噴霧器的鉑金管被堵塞是一種常見故障，用通絲清通也往往見效。但是噴霧器另一個(gè)隱性故障往往不是鉑金管管腔被堵，而是鉑金管外壁與外襯管間的環(huán)狀出氣縫隙被壓縮空氣中的油水等物所堵塞，造成空氣流通不足或不暢，從而影響到了提升量，這點(diǎn)是許多使用者不清楚的地方。分析檢測原子吸收分光光度計(jì)儀器</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3116672.html</p></div></div></div></div></div><div id="3cl7nrc" class="page-right twoColRt"><div id="e8kv3pz" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="2pwssd8" 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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