中端原子吸收分光光度計報價歡迎來電上海儀電分析儀器供應-b2b網(wǎng)站_b2b電子商務平臺【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="原子吸收分光光度計又稱為原子吸收光譜儀，是利用光源發(fā)出被測的特征光譜輻射，被經(jīng)過原子化器后的樣品蒸氣中的待測元素基態(tài)原子所吸收，通過測定特征輻射被吸收的大小，來求出被測元素的含量。原子吸收光譜儀主要由光源、原子化系統(tǒng)、光學系統(tǒng)、電學系統(tǒng)等四"><meta name="keywords" content="中端原子吸收分光光度計報價,原子吸收分光光度計"><link rel="canonical" href="http://www.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta name="baidu-site-verification" content="OBVzrC9aaQ" /> <meta http-equiv="Cache-Control" content="no-transform" /> <meta 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#f30;"></span></p><p><span>產(chǎn)品關鍵詞：</span>中端原子吸收分光光度計報價,原子吸收分光光度計</p><p><span>***更新：</span>2021-01-27 17:26:16</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="kmdakeg" 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="qmyqct3" class="page-proshow02"><p class="title">詳細說明</p><div id="auwd8yf" class="box"><p><p style="text-indent:25px">原子吸收分光光度計又稱為原子吸收光譜儀，是利用光源發(fā)出被測的特征光譜輻射，被經(jīng)過原子化器后的樣品蒸氣中的待測元素基態(tài)原子所吸收，通過測定特征輻射被吸收的大小，來求出被測元素的含量。原子吸收光譜儀主要由光源、原子化系統(tǒng)、光學系統(tǒng)、電學系統(tǒng)等四個基本部分組成，其工作原理：光源發(fā)出特征光譜輻射，經(jīng)過原子化器室后，由分光系統(tǒng)得到單色光經(jīng)過光電倍增管后到達檢測器，終端電腦從檢測器得到信號，進一步轉化為數(shù)據(jù)進行處理，因為原子化器沒有進樣時，光通過原子化器時沒有被吸收，透光率為100%，而當原子化器進樣時，光通過原子化器時有一部分被吸收，透光率減小。根據(jù)朗伯-比爾定律，中端原子吸收分光光度計報價，吸光度與樣品濃度成正比，中端原子吸收分光光度計報價，因此參照標準，根據(jù)吸光度可得出樣品的濃度，中端原子吸收分光光度計報價。原子吸收分光光度計通過其原子蒸汽，測定其吸光度的裝置稱為原子吸收分光光度計。中端原子吸收分光光度計報價</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="中端原子吸收分光光度計報價,原子吸收分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988163192494/7997740.png"></div><p style="text-indent:25px">原子吸收分光光度計把有單光束和雙度光束兩種類型如果將原子化質(zhì)器當作分光光度計的比色皿，其儀器的構造到與分光光度計比較相似。與分光光度計相比，不同點：(1)采用銳線光源；(2)單色器在火焰與檢測器之間。如果像分光光度計那樣，把單色器置于原子化器之前，火焰本身所發(fā)射的連續(xù)光譜就會直接照射在PMT上，會導致PMT壽命縮短，甚至不能正常工作。(3)原子化系統(tǒng)：除了光源發(fā)射的光外，還存在：a.火焰本身所發(fā)射的連續(xù)光譜；b.原子吸收中的原子發(fā)射現(xiàn)象。在原子化過程中，基態(tài)原子受到輻射躍遷到激發(fā)態(tài)后，處于不穩(wěn)定狀態(tài)，返回基態(tài)時，可能將能量又以光的形式釋放出來。故既存在原子吸收，也有原子發(fā)射。產(chǎn)生的輻射也不一定在一個方向上，但對測量仍將產(chǎn)生一定干擾?；ぴ游辗止夤舛扔嫴顑r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="中端原子吸收分光光度計報價,原子吸收分光光度計" 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化學攪擾是由于液相或氣相中被測元素的原子與攪擾物質(zhì)組分之間構成熱力學更安穩(wěn)的化合物，從而影響被測元素化合物的解離及其原子化。磷酸根對鈣的攪擾，硅、鈦構成難解離的氧化物、鎢、硼、希土元素等生成難解離的碳化物，從而使有關元素不能有用原子化，都是化學攪擾的例子?；瘜W攪擾是一種選擇性攪擾。原子吸收分光光度計電離攪擾：在高溫下原子電離，使基態(tài)原子的濃度減少，引起原子吸收信號降低，此種攪擾稱為電離攪擾。</p><p style="text-indent:25px">石墨爐原子吸收分光光度計，可以測定近50種元素。石墨爐法，進樣量少，靈敏度高，有的元素也可以分析到pg/mL級。元素在熱解石墨爐中被加熱原子化，成為基態(tài)原子蒸汽，對空心陰極燈發(fā)射的特征輻射進行選擇性吸收。在一定濃度范圍內(nèi)，其吸收強度與試液中被測元素的含量成正比。其定量關系可用郎伯-比耳定律，A=-lgI/Io=-lgT=KCL，式中I為透射光強度；I0為發(fā)射光強度；T為透射比；L為光通過原子化器光程(長度)，每臺儀器的L值是固定的；C是被測樣品濃度；所以A=KC。原子吸收分光度計分析樣品優(yōu)點：操作方便、快速。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="中端原子吸收分光光度計報價,原子吸收分光光度計" 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剖析是現(xiàn)在很靈敏的方法之一?；鹧嬖游盏南鄬`敏度為ug/ml-ng/ml，無火焰原子吸收分光光度計的肯定靈敏度在10-10-10-14之間。如果采取預富集，可進一步進步剖析靈敏度。因為該方法的靈敏度高，使剖析手續(xù)簡化可直接測定，則縮短剖析周期加快丈量進程。因為靈敏度高，則需樣量少。微量進樣熱核的引進，可使火趣味的需樣量少至20-300ul。無火焰原子吸收分光光度計剖析的需樣量*5–100ul。固體直接進樣石墨爐原子吸收法*需0.005-30mg，這關于實驗來歷困難的剖析是很為有利的。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。氮氣原子吸收分光光度計比較</p><p style="text-indent:25px">火焰原子吸收分光光度計應用多。中端原子吸收分光光度計報價</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、乙炔氣源鄰近禁止明火或過熱高溫物體寄存，乙炔氣源不應與氧化性氣源同放。2、排放的廢液應及時傾倒處理或與當?shù)丨h(huán)保部門。3、禁止帶電插拔數(shù)據(jù)線纜。4、在日常作業(yè)中應經(jīng)常檢查乙炔鋼瓶與減壓閥連接是否結實無漏氣。5、留意燃燒、關火次序。燃燒后操作人員不得離開！在當天不必儀器操作時,請將乙炔管道里的剩下氣體燃燒完，即直接關乙炔總開關再管空氣。6、帶石墨爐的儀器必定要留意用電安全,因為會運用380V動力電，加熱時瞬間會發(fā)生比較大的電流,所以在石墨爐處于作業(yè)狀況時，不要直接觸碰爐體部分，避免造成風險.在做試驗時隨時調(diào)查氬氣的總壓力和內(nèi)氣流量計的流量,以確保石墨管可以長期運用和試驗的準確和一致性。中端原子吸收分光光度計報價</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3037229.html</p></div></div></div></div></div><div id="2nmolsj" class="page-right twoColRt"><div id="ixuwykm" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="oda7rdf" 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配件哪家強信息推薦自業(yè)物資供應" class="vcenter" 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