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class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</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>可靠原子吸收分光光度計單價,原子吸收分光光度計</p><p><span>***更新：</span>2021-01-02 03:12:37</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="crjb8i3" 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="u3kmjqs" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="rg2qawy" class="box"><p><p style="text-indent:25px">現(xiàn)在AAS在水質(zhì)中的微量重金屬(As、Hg、Cd、Cr、Cu等)檢測方面十分受用戶的青睞。例如：水中Cu大于1.5mg/L會有苦味;Cu對心病影響很大;水中Cu超標(biāo)會按捺藻類生長，影響水產(chǎn)飼養(yǎng);特別要注意的還有飲用水中的Hg、As等對人類損害特別大，都是致的微量元素。為什么AAS在剖析檢測工作中倍受青睞?一是價格便宜，可靠原子吸收分光光度計單價、性價比高;二是操作比較簡單;三是靈敏度較高。所以，廣闊科技工作者應(yīng)該重視AAS的應(yīng)用開展情況，可靠原子吸收分光光度計單價，可靠原子吸收分光光度計單價。許多第三方檢測機(jī)構(gòu)都在很多使用AAS，現(xiàn)在開展很快值得我們高度重視。原子吸收分光光度計一般由四大部分組成?？煽吭游辗止夤舛扔媶蝺r</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="可靠原子吸收分光光度計單價,原子吸收分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419991385859509/5179129.png"></div><p style="text-indent:25px">原子吸收分光光度計組成：利用待測元素的共振輻射，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。它有單光束，雙光束，雙波道，多波道等結(jié)構(gòu)方式。其根本結(jié)構(gòu)包含光源，原子化器，光學(xué)體系和檢測體系。原子吸收分光光度計首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首要長處。多應(yīng)用于特種氣體，金屬有機(jī)化合物，金屬醇鹽中微量元素的分析?？墒菧y定每種元素均需求相應(yīng)的空心陰燈，這對檢測工作帶來不便?？煽吭游辗止夤舛扔媶蝺r原子吸收分光光度計汞(Hg)可用冷原子吸收法測定。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="可靠原子吸收分光光度計單價,原子吸收分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988134237392/1056352.png"></div><p style="text-indent:25px">原子吸收分光光度計翻開乙炔鋼瓶總閥，查看是否漏氣，長按焚燒開關(guān)，直至焚燒成功。將進(jìn)樣管放到裝有規(guī)范空白溶液的試劑瓶中，點(diǎn)擊"開端"按鈕，把進(jìn)樣管放到不同的試劑瓶中吸取對應(yīng)的溶液，并點(diǎn)擊"讀數(shù)"按鈕，點(diǎn)擊"打印機(jī)"按鈕，設(shè)置對應(yīng)的參數(shù)，并點(diǎn)擊"打印預(yù)覽"按鈕，點(diǎn)擊打印。挑選主界面的Worksheet按鈕，挑選剖析菜單，點(diǎn)擊"火焰實(shí)用工具"按鈕，點(diǎn)擊"封閉元素?zé)?按鈕。封閉乙炔氣閥，焚燒，把管道中殘缺的乙炔焚燒完。封閉空氣壓縮機(jī)，封閉排水。封閉軟件，點(diǎn)擊"文件"按鈕，點(diǎn)擊"封閉所有文件"按鈕，點(diǎn)擊"EXIT"按鈕。封閉儀器主機(jī)電源，封閉通風(fēng)器。</p><p style="text-indent:25px">哪些是原子吸收分光光度計的特點(diǎn)?原子吸收分光光度計(AAS)簡稱原子吸收法，是使用被測元素基態(tài)原子蒸氣對其共振輻射線的吸收特性進(jìn)行元素定量剖析的方法。原子吸收分光光度計具有以下特色：①靈敏度高：慣例剖析法對大多數(shù)元素可到達(dá)ppm級;使用特別手法可到達(dá)ppb級的濃度范圍;②精密度好：一般測定RSD約為1%～3%，使用特別方法精密度可小于1%。③使用范圍廣：周期表中70多種元素可使用該法測定：④干擾少：原子吸收光譜為分立的銳線光譜，且譜線堆疊性少，干擾性小;⑤試樣用量少：選用石墨爐無火焰原子吸收法，每次丈量*需5～20μl試液或0.05～10mg的固體試樣;⑥快速簡潔，易于自動化：液體試樣?？芍苯舆M(jìn)樣，一般樣品無需進(jìn)行預(yù)別離處理，新型號產(chǎn)品儀器的進(jìn)樣和測定步驟全部自動化完成。原子吸收分光光度計即每種待測元素都要有一個能發(fā)射特定波長譜線的光源。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="可靠原子吸收分光光度計單價,原子吸收分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419991268710095/3209448.png"></div><p style="text-indent:25px">在原子化進(jìn)程中，用高達(dá)數(shù)百安培電流加熱石墨管，在一秒鐘內(nèi)使之達(dá)到2000℃～3000℃，樣品在如此短的時刻被加熱蒸騰、解離成分子、原子蒸氣是一個急速分散脹大改變進(jìn)程。石墨管內(nèi)待測元素原子和共存物質(zhì)蒸氣的濃度具有激烈的時空特性，即管內(nèi)不同點(diǎn)的濃度隨時刻而急速改變，同一時刻不同方位的濃度也不同。用快速響應(yīng)檢測電路系統(tǒng)取得的原子吸收和背景吸收信號是兩條隨時刻改變的曲線，這便是原子化信號的瞬態(tài)性。這一點(diǎn)與火焰法的安穩(wěn)信號完全不同。此外，原子化進(jìn)程的瞬態(tài)信號還受制于石墨管的時刻和空間溫度特性，此乃人們感興趣也是研究很多的問題之一?；鹧嬖游辗止夤舛扔嬕话悴荒苤苯臃治龉腆w樣品。國產(chǎn)原子吸收分光光度計生產(chǎn)廠家</p><p style="text-indent:25px">原子吸收分光光度計在分析化學(xué)中的應(yīng)用未能引起重視。可靠原子吸收分光光度計單價</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(jìn)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(jìn)行選擇性吸收。在一定濃度范圍內(nèi)，其吸收強(qiáng)度與試液中被測元素的含量成正比。其定量關(guān)系可用郎伯-比耳定律，A=-lgI/Io=-lgT=KCL，式中I為透射光強(qiáng)度；I0為發(fā)射光強(qiáng)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?？煽吭游辗止夤舛扔媶蝺r</p><p style="text-indent:25px">上海儀電分析儀器有限公司致力于儀器儀表，是一家生產(chǎn)型公司。公司業(yè)務(wù)分為分光光度計，氣相色譜，原子吸收，食品安全等，目前不斷進(jìn)行創(chuàng)新和服務(wù)改進(jìn)，為客戶提供良好的產(chǎn)品和服務(wù)。公司秉持誠信為本的經(jīng)營理念，在儀器儀表深耕多年，以技術(shù)為先導(dǎo)，以自主產(chǎn)品為重點(diǎn)，發(fā)揮人才優(yōu)勢，打造儀器儀表良好品牌。儀電分析憑借創(chuàng)新的產(chǎn)品、專業(yè)的服務(wù)、眾多的成功案例積累起來的聲譽(yù)和口碑，讓企業(yè)發(fā)展再上新高。</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/2665380.html</p></div></div></div></div></div><div id="2okho7p" class="page-right twoColRt"><div id="gqard78" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="3hjvcjg" class="recomPic likePro"><a href="http://m.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="eoli33i" class="recomPic likePro"><a 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