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id="oqkryv3" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988105282341/1372565.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="7m9m0uy" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988105282341/1372565.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="onx8e2t" class="content"><p><span>需求數量：</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>產品關鍵詞：</span>高校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>2021-01-04 03:13:41</p><p><span id="click" >瀏覽次數：0次</span></p><a rel="nofollow" class="button">聯系我們</a></div></div><div id="rbacjvs" 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="eip77y8" class="page-proshow02"><p class="title">詳細說明</p><div id="r77feqh" class="box"><p><p style="text-indent:25px">原子吸收分光光度計的常見體系種類有哪些？DEMONA分光體系：中階梯光柵單色器的應用越來越多中階。梯光柵單色器在次光譜區(qū)作業(yè)，次光譜自在光譜區(qū)很小，為了將不同級次的堆疊光譜分隔，高校原子吸收分光光度計單價，通常采取穿插色散（在中階梯光柵光路的前方或后方添加首級輔助色散元件），使譜線色散方向和譜級散開方向正交，高校原子吸收分光光度計單價，在焦面上構成一個二維色散圖像。這種光柵分辨率較高，可達0.002nm，高校原子吸收分光光度計單價，結構細巧。中階梯光柵單色器結合面陣檢測器可一起接納整個作業(yè)波段范圍的光譜可完成快速多元素一起測定。1965年復旦大學電光源實驗室和冶金工業(yè)部有色金屬研究所分別研制成功空心陰極燈光源。高校原子吸收分光光度計單價</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="高校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/ydfx123/637419988105282341/1372565.png"></div><p style="text-indent:25px">原子吸收光譜分析工作原理：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，多波道等結構形式。其基本結構包括光源，原子化器，光學系統(tǒng)和檢測系統(tǒng)。它主要用于痕量元素雜質的分析，具有靈敏度高及選擇性好兩大主要優(yōu)點。多應用于各種氣體，金屬有機化合物，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的空心陰極燈，這對檢測工作帶來不便。火焰原子化法的優(yōu)點是：火焰原子化法的操作簡便，重現性好，有效光程大，對大多數元素有較高靈敏度，因此應用多。缺點是：原子化效率低，靈敏度不夠高，而且一般不能直接分析固體樣品?？諝庠游辗止夤舛扔媽Ρ仍游展庾V分析工作原理：利用待測元素的共振輻射。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="高校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/ydfx123/637419991291551872/1267970.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，現已多地應用于工業(yè)、農業(yè)、生化、地質、冶金、食品、環(huán)保等各個領域，目前原子吸收已成為金屬元素分析的強有力工具之一，而且在許多領域已作為標準分析方法。原子吸收光譜分析的特點決定了它在地質和冶金分析中的重要地位，它不僅取代了許多一般的濕法化學分析，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在也多用原子吸收法。</p><p style="text-indent:25px">原子吸收分光光度計采用新的電子技術，使儀器顯示數字化、進樣自動化，計算機數據處理系統(tǒng)使整個分析實現自動化。我國在1963年開始對原子吸收分光光度計有一般性介紹。1965年復旦大學電光源實驗室和冶金工業(yè)部有色金屬研究所分別研制成功空心陰極燈光源。1970年北京科學儀器廠試制成WFD-Y1型單光束原子吸收分光光度計?，F在我國已有多家企業(yè)生產多種型號、性能較先進的原子吸收分光光度計。原子吸收分光光度計應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。元素在熱解石墨爐中被加熱原子化，成為基態(tài)原子蒸汽。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="高校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">通常情況下，原子處于基態(tài)。當相當于原子中的電子由基態(tài)躍遷到激發(fā)態(tài)所需求的輻射頻率經過原子蒸氣，原子就能從入射輻射中吸收能量，發(fā)生共振吸收，然后發(fā)生吸收光譜。原子吸收剖析便是使用基態(tài)原子對特征輻射的吸收程度的，常使用強吸收線作為剖析線。原子吸收光譜儀由以下四部分組成光源系統(tǒng):空心陰燈原子化系統(tǒng):火焰原子化器;原子吸收分光光度計或氫化物發(fā)生器。分光系統(tǒng)：單色器檢測系統(tǒng)：光電倍增管等。原子吸收分光光度計的長處是:原子化效率高，在可調的高溫下試樣使用率達100，活絡度高，試樣用量少，適用于難熔元素的測定。缺陷是:試樣組成不均勻性的影響較大，測定度較低，共存化合物的攪擾比火焰原子化法大，攪擾布景比較嚴重，一般都需求校正布景。原子吸收分光光度計使對難溶元素的測定靈敏度還不夠理想。高校原子吸收分光光度計單價</p><p style="text-indent:25px">原子吸收分光光度計使儀器顯示數字化、進樣自動化。高校原子吸收分光光度計單價</p><p style="text-indent:25px">原子吸收分光光度計堅持血液的酸堿度和電解平衡，參與內分泌活動，促進性腺發(fā)育、生育能力及性機能和糖代謝，幫忙人體、組織把人體須的物質運送到全身，以供代謝需求。特別當某種微量元素供給短少時，可發(fā)生該種元素短少癥；當某種微量元素攝入過多，也可發(fā)生中毒。人體中微量元素具有“微量”特性，且多存在于外界環(huán)境中，所以標本的“防污染”成為分析前質量操控環(huán)節(jié)。微量元素分析儀廠家出產的微量元素分析儀就很重要，如全血鉛測定，當兒童過度觸摸鉛后，體內全血鉛濃度超支，標明或許導致神經系統(tǒng)遭受不可逆損害，致兒童智力低下121，可當該鉛成果超支是因**環(huán)節(jié)等分析前處理時發(fā)生污染所造成的，那么臨床醫(yī)師對此開具的一系列驅鉛藥物又將導致兒童體內其他需微量元素被一同“驅逐”排出，導致短少，又可引發(fā)微量元素短少性疾病。高校原子吸收分光光度計單價</p><p style="text-indent:25px">上海儀電分析儀器有限公司主要經營范圍是儀器儀表，擁有一支專業(yè)技術團隊和良好的市場口碑。公司業(yè)務涵蓋分光光度計，氣相色譜，原子吸收，食品安全等，價格合理，品質有保證。公司秉持誠信為本的經營理念，在儀器儀表深耕多年，以技術為先導，以自主產品為重點，發(fā)揮人才優(yōu)勢，打造儀器儀表良好品牌。儀電分析秉承“客戶為尊、服務為榮、創(chuàng)意為先、技術為實”的經營理念，全力打造公司的重點競爭力。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2692909.html</p></div></div></div></div></div><div id="odfrovx" class="page-right twoColRt"><div id="jdaszbd" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="z84kuln" 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配件哪家強信息推薦自業(yè)物資供應" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強信息推薦自業(yè)物資供應</p></a></div><div id="cro7r8w" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/846569.html"><div><img 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