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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>分析檢測原子吸收分光光度計(jì)比較,原子吸收分光光度計(jì)</p><p><span>***更新：</span>2021-01-19 00:21:26</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="p782eq7" 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="gyac743" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="j2gxwsz" 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原子吸收分光光度計(jì)，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(jìn)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(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、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)，分析檢測原子吸收分光光度計(jì)比較。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，分析檢測原子吸收分光光度計(jì)比較，分析檢測原子吸收分光光度計(jì)比較。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。原子吸收分光光度計(jì)一般可檢測到PPm級（10-6）。分析檢測原子吸收分光光度計(jì)比較</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="分析檢測原子吸收分光光度計(jì)比較,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">傳感器監(jiān)管糧食廠，原子吸收分光光度計(jì)功不行沒，愛糧節(jié)糧監(jiān)測技術(shù)少不了，糧食，是咱們賴以生存的條件之一，據(jù)了解，我國1/5的耕地面積被重金屬污染(近2000萬公頃)，每年受重金屬污染的糧食高達(dá)1200萬噸，經(jīng)濟(jì)損失高達(dá)數(shù)十億元。因而，原子吸收分光光度計(jì)不行少，都有哪些儀器儀表來助力咱們監(jiān)測呢？針對糧食污染等問題，咱們需要檢測鎘、鉛等重金屬含量，黃曲霉有害物質(zhì)B1等有害物質(zhì)以及農(nóng)藥殘留等食品平安目標(biāo)。重金屬含量檢測常用的辦法有原子熒光光譜法、原子吸收光譜法、電感耦合等離子質(zhì)譜法等，有害物質(zhì)的分析一般采用酶聯(lián)免疫法、薄層色譜法和有效液相色譜法，農(nóng)殘檢測則常用液相色譜-質(zhì)譜聯(lián)用法和氣相色譜-質(zhì)譜聯(lián)用法。國內(nèi)原子吸收分光光度計(jì)現(xiàn)貨原子吸收分光光度計(jì)氧化亞氮—乙炔火焰安全性較差。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="分析檢測原子吸收分光光度計(jì)比較,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">原子吸收分析中，首先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實(shí)現(xiàn)，這就存在理化方面的干擾，使對難溶元素的測定靈敏度還不夠理想，因此實(shí)際效果理想的元素*30余個；由于儀器使用中，需用乙炔、氫氣、氬氣、氧化亞氮（俗稱笑氣）等，操作中必須注意安全。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、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）。原子化器主要有兩大類，即原子吸收分光光度計(jì)和電熱原子化器。火焰有多種火焰，目前普遍應(yīng)用的是空氣—乙炔火焰。</p><p style="text-indent:25px">原子吸收分光光度計(jì)和ICP的比較：原理：原子吸收分光光度計(jì)：經(jīng)過測定某一具有特定波長的光經(jīng)過試樣原子蒸氣后被吸收的多少來測定被測元素的含量的一種方法。選擇性強(qiáng)，簡潔、快速。因?yàn)槠溥x用銳線光源，樣品不需要經(jīng)繁瑣的分離，可在同一溶液中直接測定多種元素，測定一個元素只需要數(shù)分鐘，分析操作簡潔、迅速。抗干擾能力強(qiáng)。原子吸收線數(shù)目少，光譜干擾少，一般不存在共存元素的光譜堆疊干擾。應(yīng)用范圍廣?？蓽y60多種元素；既能用于微量分析又能用于超微量分析。另外，還可用直接的辦法測定非金屬元素和有機(jī)化合物。原子吸收分光光度計(jì)計(jì)算機(jī)數(shù)據(jù)處理系統(tǒng)使整個分析實(shí)現(xiàn)自動化。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="分析檢測原子吸收分光光度計(jì)比較,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">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元素的特征光波通過樣品的原子蒸氣時(shí)，被蒸氣中待測元素的基態(tài)原子所吸收，使通過的光波強(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元素的含量。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光源，原子化器，光學(xué)系統(tǒng)和檢測系統(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。但是測定每種元素均需要相應(yīng)的空心陰極燈，這對檢測工作帶來不便。原子吸收分光光度計(jì)主要原因是未找到可產(chǎn)生銳線光譜的光源。國產(chǎn)**原子吸收分光光度計(jì)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(jì)了測汞儀。分析檢測原子吸收分光光度計(jì)比較</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元素特征譜線的光，經(jīng)過試樣蒸氣時(shí)被蒸氣中待測元素基態(tài)原子所吸收，由輻射特征譜線光被削弱的程度來測定試樣中待測元素的含量。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)射的待測元素的特征輻射經(jīng)過樣品蒸氣時(shí),被蒸氣中待測元素的基態(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元素的含量。分析檢測原子吸收分光光度計(jì)比較</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(jì)，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)。公司從事儀器儀表多年，有著創(chuàng)新的設(shè)計(jì)、強(qiáng)大的技術(shù)，還有一批**的專業(yè)化的隊(duì)伍，確保為客戶提供良好的產(chǎn)品及服務(wù)。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://www.cdcfah.com/cp/2904484.html</p></div></div></div></div></div><div id="fpb8fmd" class="page-right twoColRt"><div id="bvhjqmy" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="ap3eiub" 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" 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="mwdam32" 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