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#f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>環(huán)保原子吸收分光光度計(jì)選擇,原子吸收分光光度計(jì)</p><p><span>***更新：</span>2021-02-03 02:11:21</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="aq08qes" 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="aqwmiwc" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="ywkqokq" class="box"><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(yáng)光直接照射的室外。2.注意不能讓氣瓶的溫度超過(guò)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，環(huán)保原子吸收分光光度計(jì)選擇，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，環(huán)保原子吸收分光光度計(jì)選擇，受到?jīng)_擊后可能分解而爆開。6，環(huán)保原子吸收分光光度計(jì)選擇.乙炔氣瓶含有可溶解性的物質(zhì)。若氣瓶?jī)?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)空心陰極燈的工作電流。環(huán)保原子吸收分光光度計(jì)選擇</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="環(huán)保原子吸收分光光度計(jì)選擇,原子吸收分光光度計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988105282341/1372565.png"></div><p style="text-indent:25px">火焰原子吸收光譜儀使用光源大都是空心陰極燈，空心陰極燈的燈電流大小決定著燈輻射強(qiáng)度。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。如果燈電流過(guò)大，會(huì)導(dǎo)致燈本身發(fā)生自蝕現(xiàn)象而縮短燈使用壽命;會(huì)放電不正常。相反，在一定范圍內(nèi)降低燈電流可以降低輻射強(qiáng)度，儀器靈敏度提高，但燈穩(wěn)定性和信噪比下降。因此，在具體檢測(cè)工作中，如被測(cè)樣濃度高時(shí)，則使用較大燈電流，以獲得較好穩(wěn)定性;如被測(cè)樣濃度低時(shí)，則在保證穩(wěn)定性滿足要求的前提下，使用較低的燈電流，以獲得較好的靈敏度?？諝庠游辗止夤舛扔?jì)代理試樣中被測(cè)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。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="環(huán)保原子吸收分光光度計(jì)選擇,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)的實(shí)際應(yīng)用：1．理論研究中的應(yīng)用：原子吸收可作為物理和物理化學(xué)的一種實(shí)驗(yàn)手段，對(duì)物質(zhì)的一些基本性能進(jìn)行測(cè)定和研究。電熱原子化器容易做到控制蒸發(fā)過(guò)程和原子化過(guò)程，所以用它測(cè)定一些基本參數(shù)有比較多優(yōu)點(diǎn)。用電熱原子化器所測(cè)定的一些有元素離開機(jī)體的活化能、氣態(tài)原子擴(kuò)散系數(shù)、解離能、振子強(qiáng)度、光譜線輪廓的變寬、溶解度、蒸氣壓等。2．元素分析中的應(yīng)用：原子吸收光譜分析，由于其靈敏度高、干擾少、分析方法簡(jiǎn)單快速，現(xiàn)已普遍地應(yīng)用于工業(yè)、農(nóng)業(yè)、生化、地質(zhì)、冶金、食品、環(huán)保等各個(gè)領(lǐng)域，目前原子吸收已成為金屬元素分析的強(qiáng)有力工具之一，而且在許多領(lǐng)域已作為標(biāo)準(zhǔn)分析方法。原子吸收光譜分析的特點(diǎn)決定了它在地質(zhì)和冶金分析中的重要地位，它不只取代了許多一般的濕法化學(xué)分析，而且還與X-射線熒光分析，甚至與中子活化分析有著同等的地位。</p><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(cè)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(guò)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(cè)定。2、金屬化學(xué)形態(tài)分析中的應(yīng)用：通過(guò)氣相色譜和液體色譜分離然后以原子吸收光譜加以測(cè)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(guò)不同類型的光譜原子吸收聯(lián)用方式加以鑒別和測(cè)定。子吸收分光光度計(jì)使用的標(biāo)準(zhǔn)溶液在4℃溫度下可保存較長(zhǎng)時(shí)間，放置室溫后可正常使用。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="環(huán)保原子吸收分光光度計(jì)選擇,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">霧化器是原子化系統(tǒng)的中心部件，剖析的靈活度和精細(xì)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(xì)管噴口和節(jié)流嘴端面的相對(duì)位置和同心度。毛細(xì)管和節(jié)流嘴端面相對(duì)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(guò)察看霧化情況來(lái)判別。正常狀況下,霧滴分開噴嘴后應(yīng)沿毛細(xì)管線方向,向前成一錐形,上下左右對(duì)稱地散射開。也可經(jīng)過(guò)吸噴規(guī)范溶液測(cè)定吸光度來(lái)判別,直至呈現(xiàn)大吸光度時(shí),行將位置固定下來(lái)。需求指出的是,任何時(shí)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(huì)發(fā)作回火。1965年復(fù)旦大學(xué)電光源實(shí)驗(yàn)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。環(huán)保原子吸收分光光度計(jì)選擇</p><p style="text-indent:25px">原子吸收分光光度計(jì)通過(guò)其原子蒸汽，測(cè)定其吸光度的裝置稱為原子吸收分光光度計(jì)。環(huán)保原子吸收分光光度計(jì)選擇</p><p style="text-indent:25px">原子吸收分光光度計(jì)作用：原子吸收分光光度計(jì)的作用是進(jìn)樣器把溶液中的金屬離子提升到原子化器，用原子化器（石墨爐原子化器或者火焰原子化器）把液體通過(guò)高溫的方式轉(zhuǎn)化為氣態(tài)原子蒸汽，由于元素不同，導(dǎo)致特征譜線不同，不同的原子會(huì)吸收其特征波長(zhǎng)的光子。這時(shí)候從光源（空心陰極燈）發(fā)出來(lái)的特征譜線通過(guò)原子蒸汽被吸收一部分，比較原始光強(qiáng)（I0）和吸收后的光強(qiáng)(I)，用比爾定律得出吸收比率，進(jìn)而用標(biāo)準(zhǔn)曲線法或者標(biāo)準(zhǔn)加入法計(jì)算濃度。環(huán)保原子吸收分光光度計(jì)選擇</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/3132170.html</p></div></div></div></div></div><div id="euaguk2" class="page-right twoColRt"><div id="quec0ca" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="ksyus0o" 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" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強(qiáng) 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