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clearfix"><div id="3q3l2uy" class="twoCol"><div id="jqxz3md" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁(yè)?<a 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>?食品安全原子吸收分光光度計(jì)廠家供應(yīng) 來(lái)電咨詢上海儀電分析儀器供應(yīng)</p><div id="8nh33ar" class="leftbox clearfix"><h1>食品安全原子吸收分光光度計(jì)廠家供應(yīng) 來(lái)電咨詢上海儀電分析儀器供應(yīng)</h1><div id="ab87nn8" class="proBig"><div id="3w8udz8" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419991385859509/5179129.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="8z4xtfj" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419991385859509/5179129.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="0xbr384" 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>食品安全原子吸收分光光度計(jì)廠家供應(yīng),原子吸收分光光度計(jì)</p><p><span>***更新：</span>2021-01-25 02:11:26</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="6cwifr8" 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="nnheqsb" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="p3wizrt" class="box"><p><p style="text-indent:25px">原子吸收分光光度計(jì)使用的首要限制是：該法只能進(jìn)行無(wú)機(jī)元素的含量剖析，不能直接用于有機(jī)化合物的含量剖析和結(jié)構(gòu)剖析;別的，慣例原子吸收分光光度計(jì)每測(cè)一種元素，食品安全原子吸收分光光度計(jì)廠家供應(yīng)，要替換一次空心陰極燈光源，不能同時(shí)進(jìn)行多元素剖析。所用儀器為原子吸收分光光度計(jì)，它由光源、原子化器、單色器、背景校正系統(tǒng)、自動(dòng)進(jìn)樣系統(tǒng)和檢測(cè)系統(tǒng)等組成。原子吸收分光光度計(jì)通常人體所需的常量或痕量元素以必定的濃度散布在人的體液和各種中，食品安全原子吸收分光光度計(jì)廠家供應(yīng)，食品安全原子吸收分光光度計(jì)廠家供應(yīng)，在人的生活動(dòng)中起著不可或缺的作用，其主要生理功能是構(gòu)成人體的組成部分，也是酶和維生素的組成部分。原子吸收分光光度計(jì)，就有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)。食品安全原子吸收分光光度計(jì)廠家供應(yīng)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="食品安全原子吸收分光光度計(jì)廠家供應(yīng),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">原子吸收分光光度計(jì)安全使用的前提條件：原子吸收分光光度計(jì)是基于從光源中輻射出的待測(cè)元素的特征光波通過(guò)樣品的原子蒸氣時(shí)，被蒸氣中待測(cè)元素的基態(tài)原子所吸收，使通過(guò)的光波強(qiáng)度削弱，依據(jù)光波強(qiáng)度削弱的程度，可以求出樣品中待測(cè)元素的含量。利用待測(cè)元素的共振輻射，通過(guò)其原子蒸汽，測(cè)定其吸光度的裝置稱為原子吸收分光光光源，原子化器，光學(xué)系統(tǒng)和檢測(cè)系統(tǒng)。它主要用于痕量元素雜質(zhì)的分析，具有靈敏度高、精確度好和選擇性好三大主要優(yōu)點(diǎn)。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。但是測(cè)定每種元素均需要相應(yīng)的空心陰極燈，這對(duì)檢測(cè)工作帶來(lái)不便。中國(guó)原子吸收分光光度計(jì)經(jīng)銷商原子吸收分光光度計(jì)操作中必須注意安全。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="食品安全原子吸收分光光度計(jì)廠家供應(yīng),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">現(xiàn)在AAS在水質(zhì)中的微量重金屬(As、Hg、Cd、Cr、Cu等)檢測(cè)方面十分受用戶的青睞。例如：水中Cu大于1.5mg/L會(huì)有苦味;Cu對(duì)心病影響很大;水中Cu超標(biāo)會(huì)按捺藻類生長(zhǎng)，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(duì)人類損害特別大，都是致的微量元素。為什么AAS在剖析檢測(cè)工作中倍受青睞?一是價(jià)格便宜、性價(jià)比高;二是操作比較簡(jiǎn)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(kāi)展情況。許多第三方檢測(cè)機(jī)構(gòu)都在很多使用AAS，現(xiàn)在開(kāi)展很快值得我們高度重視。</p><p style="text-indent:25px">原子吸收光譜分析，由于其靈敏度高、干擾少、分析方法簡(jiǎn)單快速，現(xiàn)已多地應(yīng)用于工業(yè)、農(nóng)業(yè)、生化、地質(zhì)、冶金、食品、環(huán)保等各個(gè)領(lǐng)域，目前原子吸收已成為金屬元素分析的強(qiáng)有力工具之一，而且在許多領(lǐng)域已作為標(biāo)準(zhǔn)分析方法。原子吸收光譜分析的特點(diǎn)決定了它在地質(zhì)和冶金分析中的重要地位，它不*取代了許多一般的濕法化學(xué)分析，而且還與X-射線熒光分析，甚至與中子活化分析有著同等的地位。目前原子吸收法已用來(lái)測(cè)定地質(zhì)樣品中70多種元素，并且大部分能夠達(dá)到足夠的靈敏度和很好的精密度。鋼鐵、合金和高純金屬中多種痕量元素的分析現(xiàn)在也多用原子吸收法。原子吸收分光光度計(jì)即每種待測(cè)元素都要有一個(gè)能發(fā)射特定波長(zhǎng)譜線的光源。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="食品安全原子吸收分光光度計(jì)廠家供應(yīng),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">哪些是原子吸收分光光度計(jì)的特點(diǎn)?原子吸收分光光度計(jì)(AAS)簡(jiǎn)稱原子吸收法，是使用被測(cè)元素基態(tài)原子蒸氣對(duì)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(jì)具有以下特色：①靈敏度高：慣例剖析法對(duì)大多數(shù)元素可到達(dá)ppm級(jí);使用特別手法可到達(dá)ppb級(jí)的濃度范圍;②精密度好：一般測(cè)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(cè)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(wú)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(jiǎn)潔，易于自動(dòng)化：液體試樣?？芍苯舆M(jìn)樣，一般樣品無(wú)需進(jìn)行預(yù)別離處理，新型號(hào)產(chǎn)品儀器的進(jìn)樣和測(cè)定步驟全部自動(dòng)化完成。原子吸收分光光度計(jì)主要用于痕量元素雜質(zhì)的分析。食品安全原子吸收分光光度計(jì)廠家供應(yīng)</p><p style="text-indent:25px">原子吸收分光光度計(jì)使儀器顯示數(shù)字化、進(jìn)樣自動(dòng)化。食品安全原子吸收分光光度計(jì)廠家供應(yīng)</p><p style="text-indent:25px">原子吸收分光光度計(jì)電離效應(yīng)隨溫度升高、電離平衡常數(shù)加大而加大，隨被測(cè)元素濃度增高而減小。參加更易電離的堿金屬元素，能夠有用地消除電離攪擾。物理攪擾是非選擇性攪擾，對(duì)試樣各元素的影響基本是類似的，配制與被測(cè)試樣類似組成的標(biāo)準(zhǔn)樣品，是消除物理攪擾常用的方法。在不知道試樣組成或無(wú)法匹配試樣時(shí)，可采用標(biāo)準(zhǔn)參加法或稀釋法來(lái)減小和消除物理攪擾。針對(duì)糧食溫度等監(jiān)測(cè)問(wèn)題，我國(guó)從2000年就開(kāi)端實(shí)施數(shù)字糧情測(cè)控系統(tǒng)，按照必定的密度部署單總線溫度傳感器，協(xié)助糧倉(cāng)完成數(shù)字溫度的實(shí)時(shí)監(jiān)測(cè)。食品安全原子吸收分光光度計(jì)廠家供應(yīng)</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/2995708.html</p></div></div></div></div></div><div id="pw9pbse" class="page-right twoColRt"><div id="yx43wnz" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="qubif3b" 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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