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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>?手持原子吸收分光光度計銷售廠家鑄造輝煌上海儀電分析儀器供應(yīng)</p><div id="febolnu" class="leftbox clearfix"><h1>手持原子吸收分光光度計銷售廠家鑄造輝煌上海儀電分析儀器供應(yīng)</h1><div id="oiph7d8" class="proBig"><div id="k8wtq83" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419991326259040/7441452.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="ms7spw7" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419991326259040/7441452.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="ywyqszw" 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>手持原子吸收分光光度計銷售廠家,原子吸收分光光度計</p><p><span>***更新：</span>2021-01-15 04:12:18</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="ic7yq8d" 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(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="fuw8gn8" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="3mtfc7c" 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，手持原子吸收分光光度計銷售廠家.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、性價比高;二是操作比較簡單;三是靈敏度較高，手持原子吸收分光光度計銷售廠家。所以，廣闊科技工作者應(yīng)該重視AAS的應(yīng)用開展情況，手持原子吸收分光光度計銷售廠家。許多第三方檢測機構(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)。手持原子吸收分光光度計銷售廠家</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="手持原子吸收分光光度計銷售廠家,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的工作原理：原子吸收光譜儀又稱原子吸收分光光度計，根據(jù)物質(zhì)基態(tài)原子蒸汽對特征輻射吸收的作用來進行金屬元素分析。它能夠靈敏可靠地測定微量或痕量元素。原子吸收分光光度計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)。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的含量成正比。三用原子吸收分光光度計排行原子吸收分光光度計應(yīng)用不普遍。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="手持原子吸收分光光度計銷售廠家,原子吸收分光光度計" 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運用也有一定的局限性，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。原子吸收分光光度計剖析中，首要要使待測元素呈原子狀態(tài)，而原子化往往是將溶液噴霧到火焰中去完成，這就存在理化方面的攪擾，使對難溶元素的測定靈敏度還不行抱負(fù)，因而實際效果抱負(fù)的元素*30余個；因為儀器運用中，需用乙炔、氫氣、氬氣、氧化亞氮等，操作中有必要注意。靈敏度高、檢出限低由于試樣直接注入石墨管內(nèi)，樣品幾乎全部蒸騰并參與吸收試樣原子化是在惰性氣體維護下，還原性氣氛的石墨管內(nèi)進行的，有利于難熔氧化物的分化和自在原子的形成，自在原子在石墨管內(nèi)平均停留時刻長，因而管內(nèi)自在原子密度高，肯定靈敏度達10-12～10-14g。表1列出了石墨爐原子化法與火焰原子化法的靈敏度比較。</p><p style="text-indent:25px">原子吸收分光光度計使用的首要限制是：該法只能進行無機元素的含量剖析，不能直接用于有機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每測一種元素，要替換一次空心陰極燈光源，不能同時進行多元素剖析。所用儀器為原子吸收分光光度計，它由光源、原子化器、單色器、背景校正系統(tǒng)、自動進樣系統(tǒng)和檢測系統(tǒng)等組成。原子吸收分光光度計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，在人的生活動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能夠靈敏可靠地測定微量或痕量元素。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="手持原子吸收分光光度計銷售廠家,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">原子吸收光譜分析，由于其靈敏度高、干擾少、分析方法簡單快速，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)保等各個領(lǐng)域，目前原子吸收已成為金屬元素分析的強有力工具之一，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測定地質(zhì)樣品中70多種元素，并且大部分能夠達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。我國在1963年開始對原子吸收分光光度計有一般性介紹。分析檢測原子吸收分光光度計選擇</p><p style="text-indent:25px">由于汞的多應(yīng)用，對大氣中微量汞的測定曾利用原子吸收光譜原理設(shè)計了測汞儀。手持原子吸收分光光度計銷售廠家</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(guān)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。手持原子吸收分光光度計銷售廠家</p><p style="text-indent:25px">上海儀電分析儀器有限公司位于徐塘路88號7幢4層、9幢。公司自成立以來，以質(zhì)量為發(fā)展，讓匠心彌散在每個細(xì)節(jié)，公司旗下分光光度計，氣相色譜，原子吸收，食品安全深受客戶的喜愛。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，發(fā)揮人才優(yōu)勢，打造儀器儀表良好品牌。在社會各界的鼎力支持下，持續(xù)創(chuàng)新，不斷鑄造***服務(wù)體驗，為客戶成功提供堅實有力的支持。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2852399.html</p></div></div></div></div></div><div id="rqipmtq" class="page-right twoColRt"><div id="shzl3bq" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="ynu2f8h" class="recomPic likePro"><a 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