高性能原子吸收分光光度計(jì)排名鑄造輝煌上海儀電分析儀器供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺(tái)【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="儀器出廠前需經(jīng)質(zhì)檢部門按專業(yè)規(guī)范或企業(yè)規(guī)范檢定。實(shí)驗(yàn)室中的儀器也需經(jīng)計(jì)量部門按檢定規(guī)程定期檢定前方可運(yùn)用,理解和控制儀器的檢定驗(yàn)收技術(shù)尤為重要。本節(jié)引見有關(guān)儀器主要技術(shù)指標(biāo)的測試和檢定辦法。譜線的理論波長與儀器波長機(jī)構(gòu)讀數(shù)的差值稱為波長示值"><meta name="keywords" content="高性能原子吸收分光光度計(jì)排名,原子吸收分光光度計(jì)"><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 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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="d35qdx8" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988188495975/1516361.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="yjjhfc1" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)格要求：</span>面議</p><p><span>所在地：</span>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>高性能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>2021-02-05 10:15:21</p><p><span id="click" >瀏覽次數(shù)：8次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="u5fu3mu" 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="l880tu8" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="pp8zhq3" class="box"><p><p style="text-indent:25px">儀器出廠前需經(jīng)質(zhì)檢部門按專業(yè)規(guī)范或企業(yè)規(guī)范檢定。實(shí)驗(yàn)室中的儀器也需經(jīng)計(jì)量部門按檢定規(guī)程定期檢定前方可運(yùn)用,理解和控制儀器的檢定驗(yàn)收技術(shù)尤為重要。本節(jié)引見有關(guān)儀器主要技術(shù)指標(biāo)的測試和檢定辦法。譜線的理論波長與儀器波長機(jī)構(gòu)讀數(shù)的差值稱為波長示值誤差。目前,原子吸收分光光度計(jì)大多以正弦機(jī)構(gòu)調(diào)理波長。商品儀器經(jīng)過長途運(yùn)輸?shù)恼駝?dòng),波長示值可能超差。按波長次第假如一直是正誤差或負(fù)誤差,但差值不等,能夠經(jīng)過調(diào)整正弦機(jī)構(gòu)來校正；若差值大致相等，高性能原子吸收分光光度計(jì)排名,則可調(diào)理波長鼓輪或數(shù)碼輪來校正；若差值隨波長變化而正負(fù)動(dòng)搖，高性能原子吸收分光光度計(jì)排名,則需重新調(diào)理光學(xué)系統(tǒng)。專業(yè)規(guī)范和檢定規(guī)程請求,波長示值誤差應(yīng)不大于0，高性能原子吸收分光光度計(jì)排名.5nm，波長反復(fù)性應(yīng)優(yōu)于0.3nm。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。高性能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="高性能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/ydfx123/637419988188495975/1516361.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、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。紫外可見光吸收觀察的是構(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。紫外可見吸收為紫外光及可見光，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，原子吸收分光光度計(jì)是用較高的溫度來燃燒分子，使之原子化（變?yōu)榛鶓B(tài)原子），再通過特征輻射，把基態(tài)原子激發(fā)，并吸收能量，通過這個(gè)能量差（透過率）來計(jì)算出濃度。而紫外—可見分光光度計(jì)是通過顯色劑（一種能和我們被測元素產(chǎn)生絡(luò)合反應(yīng)的分子），與我們的被測元素產(chǎn)生反應(yīng)，并且反應(yīng)物分子帶有特定的顏色，經(jīng)過分子吸收氘燈（紫外區(qū)）或鎢燈（可見區(qū)）的照射，吸收燈發(fā)射的能量，通過能量差（透過率）來計(jì)算出濃度。食品安全原子吸收分光光度計(jì)單價(jià)儀器出廠前需經(jīng)質(zhì)檢部門按專業(yè)規(guī)范或企業(yè)規(guī)范檢定。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="高性能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">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)流嘴端面的相對位置和同心度。毛細(xì)管和節(jié)流嘴端面相對位置和同心度,應(yīng)在放大鏡下精心調(diào)理。每次調(diào)整效果可經(jīng)過察看霧化情況來判別。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,上下左右對稱地散射開。也可經(jīng)過吸噴規(guī)范溶液測定吸光度來判別,直至呈現(xiàn)大吸光度時(shí),行將位置固定下來。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。</p><p style="text-indent:25px">原子吸收分光光度計(jì)利用待測元素的共振輻射，原子吸收分光光度計(jì)價(jià)格通過其原子蒸汽，測定其吸光度的裝置稱為原子吸收分光光度計(jì)。原子吸收分光光度計(jì)價(jià)格它有單光束，雙光束，雙波道，多波道等結(jié)構(gòu)形式。其基本結(jié)構(gòu)包括光源，原子化器，光學(xué)系統(tǒng)和檢測系統(tǒng)。它主要用于痕量元素雜質(zhì)的分析，具有靈敏度高及選擇性好兩大主要優(yōu)點(diǎn)。普遍應(yīng)用于各種氣體，金屬有機(jī)化合物，金屬醇鹽中微量元素的分析。但是測定每種元素均需要相應(yīng)的空心陰極燈，這對檢測工作帶來不便。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)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="高性能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/ydfx123/637419991385859509/5179129.png"></div><p style="text-indent:25px">如何才能正確選擇原子吸收分光光度計(jì)？1、原子吸收分光光度計(jì)空心陰極燈的工作電流。空心陰極燈一般需要預(yù)熱10-30min才能達(dá)到穩(wěn)定輸出。燈電流過小，放電不穩(wěn)定，故光譜輸出不穩(wěn)定，且光譜輸出強(qiáng)度小;燈電流過大，發(fā)射譜線變寬，導(dǎo)致靈敏度下降，校正曲線彎曲，燈壽命縮短。選用燈電流的一般原則是，在保證有足夠強(qiáng)且穩(wěn)定的光強(qiáng)輸出條件下，盡量使用較低的工作電流。通常以空心陰極燈上標(biāo)明的Z大電流的一半至三分之二作為工作電流。在具體的分析場合，較適宜的工作電流由實(shí)驗(yàn)確定。2、原子吸收分光光度計(jì)進(jìn)樣量。進(jìn)樣量過小，吸收信號(hào)弱，不便于測量;進(jìn)樣量過大，在火焰原子化法中，對火焰產(chǎn)生冷卻效應(yīng)，在石墨爐原子化法中，會(huì)增加除殘的困難。在實(shí)際工作中，應(yīng)測定吸光度隨進(jìn)樣量的變化，達(dá)到滿意的吸光度的進(jìn)樣量，即為應(yīng)選擇的進(jìn)樣量。原子吸收光譜儀分析中的干擾效應(yīng)：物理干擾。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)安全操作須知：操作人員必須經(jīng)過儀器生產(chǎn)商的操作培訓(xùn)或持有更高級(jí)別職業(yè)資格證書。高性能原子吸收分光光度計(jì)排名</p><p style="text-indent:25px">原子吸收分光光度計(jì)的基本部件：原子吸收分光光度計(jì)一般由四大部分組成，即光源（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)（包括光電轉(zhuǎn)換器及相應(yīng)的檢測裝置）。原子化器主要有兩大類，即火焰原子化器和電熱原子化器?；鹧嬗卸喾N火焰，目前普遍應(yīng)用的是空氣—乙炔火焰。電熱原子化器普遍應(yīng)用的是石墨爐原子化器，因而原子吸收分光光度計(jì)，就有火焰原子吸收分光光度計(jì)和帶石墨爐的原子吸收分光光度計(jì)。前者原子化的溫度在2100℃～2400℃之間，后者在2900℃～3000℃之間。高性能原子吸收分光光度計(jì)排名</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3175903.html</p></div></div></div></div></div><div id="ehaurwm" class="page-right twoColRt"><div id="dkt5rey" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="31iingi" 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) 信息推薦自業(yè)物資供應(yīng)</p></a></div><div id="eljwen3" class="recomPic 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