材料原子吸收分光光度計(jì)報(bào)價(jià) 誠(chéng)信互利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="新購(gòu)儀器應(yīng)及時(shí)開箱,按清單逐一查對(duì)主機(jī)、附件、零配件和運(yùn)用闡明書等能否齊全,同時(shí)要檢查儀器二表觀能否有損傷。如發(fā)現(xiàn)問題及時(shí)向消費(fèi)戶家提出,要留意維護(hù)現(xiàn)場(chǎng),以便剖析損傷緣由。在開箱后和裝置前,必需認(rèn)真閱讀儀器運(yùn)用闡明書,熟習(xí)儀器原理、構(gòu)造和運(yùn)"><meta name="keywords" content="材料原子吸收分光光度計(jì)報(bào)價(jià),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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href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_yiqiyibiao/">儀器儀表</a>?<a href="http://www.cdcfah.com/cp/second-yiqiyibiao_fenxiyiqi/">分析儀器</a>?<a href="http://www.cdcfah.com/cp/third-fenxiyiqi_ysfxyq/">元素分析儀器</a>?材料原子吸收分光光度計(jì)報(bào)價(jià) 誠(chéng)信互利上海儀電分析儀器供應(yīng)</p><div id="y35wfci" class="leftbox clearfix"><h1>材料原子吸收分光光度計(jì)報(bào)價(jià) 誠(chéng)信互利上海儀電分析儀器供應(yīng)</h1><div id="il5kw3p" class="proBig"><div id="oli600p" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419991236161257/4858141.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="qm5iqhh" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419991236161257/4858141.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="dp5oxfg" 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>材料原子吸收分光光度計(jì)報(bào)價(jià),原子吸收分光光度計(jì)</p><p><span>***更新：</span>2021-02-07 09:13:05</p><p><span id="click" >瀏覽次數(shù)：4次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="mjc6mqj" 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="ie8iqk0" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="j00ecrh" class="box"><p><p style="text-indent:25px">新購(gòu)儀器應(yīng)及時(shí)開箱,按清單逐一查對(duì)主機(jī)、附件、零配件和運(yùn)用闡明書等能否齊全,同時(shí)要檢查儀器二表觀能否有損傷。如發(fā)現(xiàn)問題及時(shí)向消費(fèi)戶家提出,要留意維護(hù)現(xiàn)場(chǎng),以便剖析損傷緣由。在開箱后和裝置前,必需認(rèn)真閱讀儀器運(yùn)用闡明書,熟習(xí)儀器原理、構(gòu)造和運(yùn)用辦法,理解儀器對(duì)實(shí)驗(yàn),室環(huán)境條件和安裝條件的請(qǐng)求：完善條件和做好裝置前的各項(xiàng)準(zhǔn)備工作將主機(jī)、計(jì)算機(jī)、打印機(jī)、空壓機(jī)、循環(huán)冷卻水安裝、石墨爐及其電源安裝當(dāng)心從包裝箱中取出,按闡明書請(qǐng)求整體規(guī)劃。主機(jī)和附件放在工作臺(tái)上以后,調(diào)整其底腳使之平穩(wěn)、受力平均，材料原子吸收分光光度計(jì)報(bào)價(jià)。逐一檢查主機(jī)的外光路,主機(jī)和配件電器及機(jī)械局部的表觀情況，材料原子吸收分光光度計(jì)報(bào)價(jià)。然后依照闡明書中的請(qǐng)求銜接好儀器的電路，材料原子吸收分光光度計(jì)報(bào)價(jià)、氣路和水路。原子吸收分光度計(jì)分析樣品優(yōu)點(diǎn)：準(zhǔn)確度好。材料原子吸收分光光度計(jì)報(bào)價(jià)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="材料原子吸收分光光度計(jì)報(bào)價(jià),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">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)分析線。通常選用共振吸收線為分析線，測(cè)定高含量元素時(shí)，可以選用靈敏度較低的非共振吸收線為分析線。As、Se等共振吸收線位于200nm以下的遠(yuǎn)紫外區(qū)，火焰組分對(duì)其有明顯吸收，故用火焰原子吸收法測(cè)定這些元素時(shí)，不宜選用共振吸收線為分析線。2.原子吸收分光光度計(jì)狹縫寬度。狹縫寬度影響光譜通帶寬度與檢測(cè)器接受的能量。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。調(diào)節(jié)不同的狹縫寬度，測(cè)定吸光度隨狹縫寬度而變化，當(dāng)有其它的譜線或非吸收光進(jìn)入光譜通帶內(nèi)，吸光度將立即減小。不引起吸光度減小的較大狹縫寬度，即為應(yīng)選取的合適的狹縫寬度。高性能原子吸收分光光度計(jì)排行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。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="材料原子吸收分光光度計(jì)報(bào)價(jià),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">原子吸收分光光度法常使用哪些定量分析方法?規(guī)范曲線法：先配制相同基體的含有不同濃度待測(cè)元素的系列規(guī)范溶液，在選定的實(shí)驗(yàn)條件下分別測(cè)其吸光度.以扣除空白值之后的吸光度為縱坐標(biāo)，規(guī)范溶液濃度為橫坐標(biāo)繪制規(guī)范曲線。在同樣操作條件下測(cè)定試樣溶液的吸光度，從規(guī)范曲線查得試樣溶液的濃度。運(yùn)用該辦法時(shí)應(yīng)留意：配制的規(guī)范溶液濃度應(yīng)在吸光度與濃度成線性的范圍內(nèi)；整個(gè)剖析過程中操作條件應(yīng)堅(jiān)持不變。另外，規(guī)范曲線法固然簡(jiǎn)單，但必需保證規(guī)范樣品與試樣的物理性質(zhì)相同，保證不存在干擾物，關(guān)于組成尚不分明的樣品不能用規(guī)范曲線法。</p><p style="text-indent:25px">原子吸收光譜儀所檢測(cè)，導(dǎo)致吸光度值偏高：光譜背景除了波長(zhǎng)特征之外，還有時(shí)間、空間分布特征。分子吸收通常先于原子吸收信號(hào)之前產(chǎn)生，當(dāng)有快速響應(yīng)電路和記錄裝置時(shí)，可以從時(shí)間上分辨分子吸收和原子吸收信號(hào)。樣品蒸氣在石墨爐內(nèi)分布的不均勻性，導(dǎo)致了背景吸收空間分布的不均勻性。提高溫度使單位時(shí)間內(nèi)蒸發(fā)出的背景物的濃度增加，同時(shí)也使分子解離增加。這兩個(gè)因素共同制約著背景吸收。在恒溫爐中，提高溫度和升溫速率，使分子吸收明顯下降。儀器應(yīng)防止日光直射、煙塵、純凈氣流及水蒸氣的影響，避免腐蝕氣體的干擾。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="材料原子吸收分光光度計(jì)報(bào)價(jià),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">原子吸收分光光度計(jì)儀器工作原理：將待分析物質(zhì)以適當(dāng)方法轉(zhuǎn)變?yōu)槿芤?，并將溶液以霧狀引入原子化器。此時(shí)，被測(cè)元素在原子化器中原子化為基態(tài)原子蒸氣。當(dāng)光源發(fā)射出的與被測(cè)元素吸收波長(zhǎng)相同的特征譜線通過基態(tài)原子蒸氣時(shí)，光能因被基態(tài)原子所吸收而減弱，其減弱的程度（吸光度）在一定條件下，與基態(tài)原子的數(shù)目（元素濃度）之間的關(guān)系，遵守朗伯-比耳定律。被基態(tài)原子吸收后的譜線，經(jīng)分光系統(tǒng)分光后，由檢測(cè)器接收，轉(zhuǎn)換為電信號(hào)，再經(jīng)放大器放大，由顯示系統(tǒng)顯示出吸光度或光譜圖。儀器基本結(jié)構(gòu)：原子吸收分光光度計(jì)主要由光源、原子化器、單色器、檢測(cè)系統(tǒng)和顯示系統(tǒng)等部分組成。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。專業(yè)原子吸收分光光度計(jì)</p><p style="text-indent:25px">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)。材料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)常見的故障解決方法：產(chǎn)生原因：由于經(jīng)常對(duì)燃燒器進(jìn)行清洗和調(diào)整，難免使燃燒縫偏離了光軸，致使陰極燈射出的光束不能完全照射到原子蒸汽中去，使檢測(cè)靈敏度下降，這種隱蔽性比較強(qiáng)的故障往往被使用者忽略。排除方法：（1）使用銅燈（或其他燈），只通空氣，不點(diǎn)火；邊吸入蒸餾水邊前后調(diào)整燃燒頭的位置，使儀器的透過率較小或背景吸光度較大。這樣做的依據(jù)是：使汽化的樣品密度較大的區(qū)域被調(diào)整到光軸中心，已達(dá)到較佳吸收狀態(tài)。此種方法稱為“冷吸收法”。（2）將儀器自帶或者自制的光軸校準(zhǔn)器具插在燃燒縫中，來(lái)校準(zhǔn)燃燒器與光軸的相對(duì)位置。注意：有燃燒器前后調(diào)整旋鈕的儀器調(diào)整較為簡(jiǎn)便，無(wú)此設(shè)備的儀器麻煩一些。材料原子吸收分光光度計(jì)報(bào)價(jià)</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/3200837.html</p></div></div></div></div></div><div id="eb5pjnl" class="page-right twoColRt"><div id="q36bgdq" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="txi3888" 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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