直讀原子吸收分光光度計(jì)儀器誠(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(mǎi)產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="原子吸收分光光度計(jì)的工作原理：原子吸收光譜儀又稱(chēng)原子吸收分光光度計(jì)，根據(jù)物質(zhì)基態(tài)原子蒸汽對(duì)特征輻射吸收的作用來(lái)進(jìn)行金屬元素分析。它能夠靈敏可靠地測(cè)定微量或痕量元素。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"><meta name="keywords" content="直讀原子吸收分光光度計(jì)儀器,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 name="baidu-site-verification" content="OBVzrC9aaQ" /> <meta 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</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="gww22kg" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="8qgim2g" class="box"><p><p style="text-indent:25px">原子吸收分光光度計(jì)的工作原理：原子吸收光譜儀又稱(chēng)原子吸收分光光度計(jì)，根據(jù)物質(zhì)基態(tài)原子蒸汽對(duì)特征輻射吸收的作用來(lái)進(jìn)行金屬元素分析。它能夠靈敏可靠地測(cè)定微量或痕量元素。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，直讀原子吸收分光光度計(jì)儀器，直讀原子吸收分光光度計(jì)儀器、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(cè)裝置)。元素在熱解石墨爐中被加熱原子化，直讀原子吸收分光光度計(jì)儀器，成為基態(tài)原子蒸汽，對(duì)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)度與試液中被的含量成正比。原子化器主要有兩大類(lèi)，即原子吸收分光光度計(jì)和電熱原子化器。直讀原子吸收分光光度計(jì)儀器</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="直讀原子吸收分光光度計(jì)儀器,原子吸收分光光度計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988163192494/7997740.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(chēng)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。雙光束原子吸收分光光度計(jì)銷(xiāo)售廠家很長(zhǎng)一段時(shí)間，原子吸收主要局限于天體物理方面的研究。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="直讀原子吸收分光光度計(jì)儀器,原子吸收分光光度計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988246893719/5353894.png"></div><p style="text-indent:25px">原子吸收分光光度計(jì)的優(yōu)點(diǎn)是：原子化效率高，在可調(diào)的高溫下試樣利用率達(dá)100%，靈敏度高，試樣用量少，適用于難熔元素的測(cè)定。缺點(diǎn)是：試樣組成不均勻性的影響較大，測(cè)定精密度較低，共存化合物的干擾比火焰原子化法大，干擾背景比較嚴(yán)重，一般都需要校正背景。原子吸收光譜分析現(xiàn)已多用于各個(gè)分析領(lǐng)域，主要有四個(gè)方面：理論研究；元素分析；有機(jī)物分析；金屬化學(xué)形態(tài)分析。理論研究中的應(yīng)用：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。電熱原子化器容易做到控制蒸發(fā)過(guò)程和原子化過(guò)程，所以用它測(cè)定一些基本參數(shù)有很多優(yōu)點(diǎn)。用電熱原子化器所測(cè)定的一些有元素離開(kāi)機(jī)體的活化能、氣態(tài)原子擴(kuò)散系數(shù)、解離能、振子強(qiáng)度、光譜線輪廓的變寬、溶解度、蒸氣壓等。</p><p style="text-indent:25px">原子吸收光譜儀配件的根本原理儀器從光源輻射出具有待測(cè)元素特征譜線的光，經(jīng)過(guò)試樣蒸氣時(shí)被蒸氣中待測(cè)元素基態(tài)原子所吸收，由輻射特征譜線光被削弱的程度來(lái)測(cè)定試樣中待測(cè)元素的含量。原子吸收光譜儀配件的使用因原子吸收光譜儀的活絡(luò)、準(zhǔn)確、簡(jiǎn)潔等特點(diǎn)，現(xiàn)已多用于冶金、地質(zhì)、采礦、石油、輕工、農(nóng)業(yè)、醫(yī)藥、衛(wèi)生、食物及環(huán)境監(jiān)測(cè)等方面的常量及微痕量元素剖析。原子吸收光譜法是根據(jù)從光源發(fā)射的待測(cè)元素的特征輻射經(jīng)過(guò)樣品蒸氣時(shí),被蒸氣中待測(cè)元素的基態(tài)原子所吸收,根據(jù)輻射強(qiáng)度的削弱程度以求得樣品中待測(cè)元素的含量。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。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="直讀原子吸收分光光度計(jì)儀器,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">微量元素分析儀廠家生產(chǎn)的微量元素分析儀技術(shù)參數(shù)：1、設(shè)備裝備：雙通道譜、溶出同測(cè)工作站。2、檢測(cè)辦法：選用衛(wèi)生部規(guī)范辦法微分電位溶出法檢測(cè)鉛、銅、鎬；選用譜法檢測(cè)鋅、鐵、鈣、鎂、等微量元素。3、標(biāo)本：全血、血清、頭發(fā)。4、技術(shù)目標(biāo)電位溶出極譜。檢測(cè)下限<0.1μg/L【對(duì)Pb（l）】<5×10-8m0l/L重復(fù)性誤差RSD<3RSD<1校準(zhǔn)曲線的度RSD<8RSD<2線性關(guān)系R>0.9990R≥0.9990。5、可檢測(cè)鋅、鐵、鈣、鎂、鏢、鉛、銅、鎬八項(xiàng)微量元素。6、雙通道且可一同測(cè)量，一個(gè)通道檢測(cè)鉛銅，另一個(gè)通道檢測(cè)鋅鐵鈣鎂鏢。由于汞的多應(yīng)用，對(duì)大氣中微量汞的測(cè)定曾利用原子吸收光譜原理設(shè)計(jì)了測(cè)汞儀。雙光束原子吸收分光光度計(jì)銷(xiāo)售廠家</p><p style="text-indent:25px">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)。直讀原子吸收分光光度計(jì)儀器</p><p style="text-indent:25px">電熱原子化器普遍應(yīng)用的是原子吸收分光光度計(jì)，因而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)。前者原子化的溫度在2100℃～2400℃之間，后者在2900℃～3000℃之間。原子吸收分光光度計(jì)，利用空氣—乙炔測(cè)定的元素可達(dá)30多種，若使用氧化亞氮—乙炔火焰，測(cè)定的元素可達(dá)70多種。但氧化亞氮—乙炔火焰安全性較差，應(yīng)用不普遍?？諝狻胰不鹧嬖游辗止夤舛扔?jì)，一般可檢測(cè)到PPm級(jí)（10-6），精密度1%左右。國(guó)產(chǎn)的原子吸收分光光度計(jì)，都可配備各種型號(hào)的氫化物發(fā)生器（屬電加熱原子化器），利用氫化物發(fā)生器，可測(cè)定砷（As）、銻（Sb）、鍺（Ge）、碲（Te）等元素。一般靈敏度在ng/ml級(jí)（10-9），相對(duì)標(biāo)準(zhǔn)偏差2%左右。汞(Hg)可用冷原子吸收法測(cè)定。直讀原子吸收分光光度計(jì)儀器</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/2958577.html</p></div></div></div></div></div><div id="ssq2ccu" class="page-right twoColRt"><div id="2i6iqe2" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="kygee4i" 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)" 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