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#f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>實(shí)驗(yàn)室原子吸收分光光度計(jì)儀器,原子吸收分光光度計(jì)</p><p><span>***更新：</span>2021-02-05 10:15:21</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="myoec0q" 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="coek8k0" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="a8mmyyw" class="box"><p><p style="text-indent:25px">原子吸收分光光度計(jì)與紫外可見(jiàn)分光光度計(jì)的區(qū)別：1、原理：原子吸收觀察的是構(gòu)成物質(zhì)的元素（原子）中的電子在原子軌道中的躍遷，屬于原子吸收，實(shí)驗(yàn)室原子吸收分光光度計(jì)儀器。紫外可見(jiàn)光吸收觀察的是構(gòu)成物質(zhì)的分子中的電子在分子軌道中的躍遷，屬于分子吸收。2、能量:兩者有所同，又有所不同。定量分析的原則同，而測(cè)量所需的光能量不同：原子吸收為X射線，能量大，可激發(fā)電子從低的原子軌道向高的原子軌道躍遷。紫外可見(jiàn)吸收為紫外光及可見(jiàn)光，實(shí)驗(yàn)室原子吸收分光光度計(jì)儀器，能量小，只能激發(fā)電子從分子軌道向較低（或次低）的空的分子軌道躍遷。通俗的說(shuō)，實(shí)驗(yàn)室原子吸收分光光度計(jì)儀器，原子吸收分光光度計(jì)是用較高的溫度來(lái)燃燒分子，使之原子化（變?yōu)榛鶓B(tài)原子），再通過(guò)特征輻射，把基態(tài)原子激發(fā)，并吸收能量，通過(guò)這個(gè)能量差（透過(guò)率）來(lái)計(jì)算出濃度。而紫外—可見(jiàn)分光光度計(jì)是通過(guò)顯色劑（一種能和我們被測(cè)元素產(chǎn)生絡(luò)合反應(yīng)的分子），與我們的被測(cè)元素產(chǎn)生反應(yīng)，并且反應(yīng)物分子帶有特定的顏色，經(jīng)過(guò)分子吸收氘燈（紫外區(qū)）或鎢燈（可見(jiàn)區(qū)）的照射，吸收燈發(fā)射的能量，通過(guò)能量差（透過(guò)率）來(lái)計(jì)算出濃度?；鹧嬖踊ㄖ?，火焰類型和特性是影響原子化效率的主要因素。實(shí)驗(yàn)室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="實(shí)驗(yàn)室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/ydfx123/637419991236161257/4858141.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(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。暗箱原子吸收分光光度計(jì)怎么樣原子吸收分光光度計(jì)安全操作須知：操作人員必須經(jīng)過(guò)儀器生產(chǎn)商的操作培訓(xùn)或持有更高級(jí)別職業(yè)資格證書。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="實(shí)驗(yàn)室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/ydfx123/637419988188495975/1516361.png"></div><p style="text-indent:25px">原子吸收分光度計(jì)分析樣品優(yōu)點(diǎn)：1、抗干擾能力強(qiáng)。從玻爾茲曼方程可知，火焰溫度的波動(dòng)對(duì)發(fā)射光譜的譜線強(qiáng)度影響比較大，而對(duì)原子吸收分析的影響則要小的多。2、準(zhǔn)確度好?？招娟帢O燈輻射出的特征譜線只被其特定元素所吸收。所以，原子吸收分析的準(zhǔn)確度較高。當(dāng)然，原子吸收光譜分析也存在一些不足之處，原子吸收光譜法的光源是單元素空芯陰極燈，測(cè)定一種元素就必須選用該元素的空芯陰極燈，這一原因造成本法不適用于物質(zhì)組成的定性分析，對(duì)于難熔元素的測(cè)定不能令人滿意。另外原子吸收不能對(duì)共振線處于真空紫外區(qū)的元素進(jìn)行直接測(cè)定。</p><p style="text-indent:25px">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(lái)進(jìn)行金屬元素分析，它能夠靈敏可靠的測(cè)定微量或痕量元素。原子吸收分光光度計(jì)一般由光源（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)四大部分組成。原子吸收分光光度法應(yīng)用也有一定的局限性，即每種待測(cè)元素都要有一個(gè)能發(fā)射特定波長(zhǎng)譜線的光源。原子吸收分析中，首先要使待測(cè)元素呈原子狀態(tài)，而原子化往往是將溶液噴霧到火焰中去實(shí)現(xiàn)，這就存在理化方面的干擾，使對(duì)難溶元素的測(cè)定靈敏度還不夠理想，因此實(shí)際效果理想的元素只30余個(gè)；由于儀器使用中，需用乙炔、氫氣、氬氣、氧化亞氮（俗稱笑氣）等，操作中必須注意安全。原子吸收分光度計(jì)分析樣品優(yōu)點(diǎn)：操作方便、快速。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="實(shí)驗(yàn)室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/ydfx123/637419988105282341/1372565.png"></div><p style="text-indent:25px">原子吸收分光光度計(jì)儀器分類：1、火焰原子化法的優(yōu)點(diǎn)是：火焰原子化法的操作簡(jiǎn)便，重現(xiàn)性好，有效光程大，對(duì)大多數(shù)元素有較高靈敏度，因此應(yīng)用普遍。缺點(diǎn)是：原子化效率低，靈敏度不夠高，而且一般不能直接分析固體樣品；2、石墨爐原子化器的優(yōu)點(diǎn)是：原子化效率高，在可調(diào)的高溫下試樣利用率達(dá)100%，靈敏度高，試樣用量少，適用于難熔元素的測(cè)定。缺點(diǎn)是：試樣組成不均勻性的影響較大，測(cè)定精密度較低，共存化合物的干擾比火焰原子化法大，干擾背景比較嚴(yán)重，一般都需要校正背景。原子吸收分光光度計(jì)原子化條件：燃燒器的高度選擇。環(huán)保原子吸收分光光度計(jì)性價(jià)比</p><p style="text-indent:25px">原子吸收分光光度計(jì)即每種待測(cè)元素都要有一個(gè)能發(fā)射特定波長(zhǎng)譜線的光源。實(shí)驗(yàn)室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)按光束形成可分為單光束（指從光源中發(fā)出的光只以單一光束的形式通過(guò)原子化器、單色器和檢測(cè)系統(tǒng)）和雙光束（指從光源發(fā)出的光被切光器分成兩束強(qiáng)度相等的光，一束為樣品光束通過(guò)原子化器被基態(tài)原子部分吸收；另一束只作為參比光束，不通過(guò)原子化器，其光強(qiáng)度不被減弱）兩類；按包含“單獨(dú)”的分光系統(tǒng)和檢測(cè)系統(tǒng)的數(shù)目又可分為單道（指儀器只有一個(gè)光源，一個(gè)單色器，一個(gè)顯示系統(tǒng)，每次只能測(cè)一種元素）、雙道（指儀器有兩個(gè)不同光源，兩個(gè)單色器兩個(gè)檢測(cè)顯示系統(tǒng)）和多道。目前普遍使用的是單道單光束或單道雙光束原子吸收分光光度計(jì)。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。實(shí)驗(yàn)室原子吸收分光光度計(jì)儀器</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/3175902.html</p></div></div></div></div></div><div id="msy8sqm" class="page-right twoColRt"><div id="iyem0cq" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="gwmsous" 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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