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#f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>上海***原子吸收分光光度計(jì)排名,原子吸收分光光度計(jì)</p><p><span>***更新：</span>2021-02-06 05:12:16</p><p><span id="click" >瀏覽次數(shù)：2次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="fbsuwdc" 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="3fcebxh" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="zl3vn2m" class="box"><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，上海***原子吸收分光光度計(jì)排名，由于元素不同，上海***原子吸收分光光度計(jì)排名，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)，上海***原子吸收分光光度計(jì)排名，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。原子吸收分光度計(jì)分析樣品優(yōu)點(diǎn)：準(zhǔn)確度好。上海***原子吸收分光光度計(jì)排名</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(jì)排名,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">原子吸收光譜儀分析中的干擾效應(yīng)：1、電離干擾：在高溫下原子電離，使基態(tài)原子的濃度減少，引起原子吸收信號(hào)降低，此種干擾稱為電離干擾。電離效應(yīng)隨溫度升高、電離平衡常數(shù)增大而增大，隨被測(cè)元素濃度增高而減小。加入更易電離的堿金屬元素，可以有效地消除電離干擾。2、光譜干擾：光譜干擾包括譜線重疊、光譜通帶內(nèi)存在非吸收線、原子化池內(nèi)的直流發(fā)射、分子吸收、光散射等。當(dāng)采用銳線光源和交流調(diào)制技術(shù)時(shí)，主要考慮分子吸收和光散射的影響，它們是形成光譜背景的主要因素。環(huán)境檢測(cè)原子吸收分光光度計(jì)對(duì)比火焰原子化法的優(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。</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(jì)排名,原子吸收分光光度計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419991291551872/1267970.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。</p><p style="text-indent:25px">火焰中有兩種以上原子的吸收線與光源發(fā)射的剖析線相堆疊時(shí)產(chǎn)生臨近線干擾，這種干擾使結(jié)果偏高。當(dāng)剖析元素的吸收線和共存元素的吸收線完整堆疊，而剖析元素的含量比較低時(shí)，測(cè)得的只是共存元素的吸收信號(hào)。當(dāng)剖析元素的剖析線中心位置和共存元素的吸收線的中心位置稍有偏離，但仍有相當(dāng)水平的堆疊，此時(shí)得于的吸收信號(hào)仍有比較大一局部是共存元素產(chǎn)生的。當(dāng)共存元素的吸收線和剖析元素的吸收線稍有堆疊時(shí)，吸收信號(hào)中仍有小局部是共存元素產(chǎn)生的。只要剖析元素的吸收線和共存元素的吸收線完整別離時(shí)，共存元素才不產(chǎn)生干擾。Co253.649對(duì)Hg253.652r的干擾是典型的吸收線堆疊干擾。原子吸收分光光度計(jì)氧化亞氮—乙炔火焰安全性較差。</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(jì)排名,原子吸收分光光度計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988246893719/5353894.png"></div><p style="text-indent:25px">原子吸收分光光度計(jì)可普遍應(yīng)用于食品、醫(yī)藥、環(huán)境、生物、農(nóng)業(yè)、石油化工、建筑、材料、地質(zhì)、冶金、科研等領(lǐng)域。一、原子吸收火焰法：原子吸收的火焰法作為一種較常用的分析方法被普遍的使用，對(duì)于一些常見(jiàn)的，含量在一定可測(cè)范圍內(nèi)金屬元素而言，火焰原子吸收法簡(jiǎn)單而快捷，結(jié)果的準(zhǔn)確度非常高。二、原子吸收石墨爐法：原子吸收石墨爐法是原子吸收應(yīng)用中較經(jīng)典的方法，一般的石墨爐可以瞬時(shí)升溫至3000℃，對(duì)于一些含量極低的或者一些高溫元素的定量檢測(cè)十分有效，甚至比較多儀器和分析**認(rèn)為，之所以原子吸收分光光度計(jì)沒(méi)有被淘汰至今還在普遍的適用正是因?yàn)樵游盏氖珷t法的精度及較小檢測(cè)極限是目前所有測(cè)試方法中幾乎無(wú)可替代的。三、原子吸收氫化物法：也稱冷原子法，一般用于測(cè)定汞、砷之類的元素。所以在原子吸收分光光度計(jì)的選擇上，我們首先要選定主要是用哪一種方法去做金屬元素的含量測(cè)定，然后根據(jù)測(cè)定方法去確定原子吸收分光光度計(jì)的配置。原子吸收光譜分析中，光譜重疊干擾的幾率小，可以允許使用較寬的狹縫。國(guó)產(chǎn)原子吸收分光光度計(jì)報(bào)價(jià)</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)。上海***原子吸收分光光度計(jì)排名</p><p style="text-indent:25px">原子吸收分光光度法常使用哪些定量分析方法?規(guī)范參加法：適用于試樣的基體組成復(fù)雜且對(duì)測(cè)定有明顯干擾時(shí)，但在規(guī)范曲線呈線性關(guān)系的濃度范圍內(nèi)的樣品。取四份相同體積的試樣溶液，從第二份起按比例參加不同量的待測(cè)元素的規(guī)范溶液．稀釋至一定體積。分別測(cè)定參加規(guī)范溶液后樣品的吸光度。以吸光度對(duì)參加的待測(cè)元素的濃度作圖，得到一條不經(jīng)過(guò)原點(diǎn)的直線，外延此直線與橫坐標(biāo)的交點(diǎn)即為試樣溶液中待測(cè)元素的濃度。為得到較為精確的外推結(jié)果·應(yīng)少用四個(gè)點(diǎn)來(lái)作外推曲線。需求留意的是，該辦法只能消弭基體效應(yīng)的影響，而不能消弭背景吸收的影響，故應(yīng)扣除背景值。上海***原子吸收分光光度計(jì)排名</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/3187453.html</p></div></div></div></div></div><div id="yip8g8s" class="page-right twoColRt"><div id="tnpme33" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="p2q8rls" 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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