分析檢測原子吸收分光光度計賣價來電咨詢上海儀電分析儀器供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="原子吸收分光光度計剖析是現(xiàn)在很靈敏的方法之一?；鹧嬖游盏南鄬`敏度為ug/ml-ng/ml，無火焰原子吸收分光光度計的肯定靈敏度在10-10-10-14之間，分析檢測原子吸收分光光度計賣價。如果采取預(yù)富集，可進(jìn)一步進(jìn)步剖析靈敏度。因為該"><meta name="keywords" content="分析檢測原子吸收分光光度計賣價,原子吸收分光光度計"><link rel="canonical" href="http://m.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 http-equiv="Cache-Control" content="no-transform" /> <meta 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src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988150712025/4463747.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="m7hpo9k" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988150712025/4463747.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="b7gi333" 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>分析檢測原子吸收分光光度計賣價,原子吸收分光光度計</p><p><span>***更新：</span>2021-01-17 08:13:57</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="wvnfztp" 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="nczgiht" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="g23t3dk" class="box"><p><p style="text-indent:25px">原子吸收分光光度計剖析是現(xiàn)在很靈敏的方法之一?；鹧嬖游盏南鄬`敏度為ug/ml-ng/ml，無火焰原子吸收分光光度計的肯定靈敏度在10-10-10-14之間，分析檢測原子吸收分光光度計賣價。如果采取預(yù)富集，可進(jìn)一步進(jìn)步剖析靈敏度。因為該方法的靈敏度高，使剖析手續(xù)簡化可直接測定，則縮短剖析周期加快丈量進(jìn)程。因為靈敏度高，則需樣量少。微量進(jìn)樣熱核的引進(jìn)，可使火趣味的需樣量少至20-300ul，分析檢測原子吸收分光光度計賣價。無火焰原子吸收分光光度計剖析的需樣量*5–100ul。固體直接進(jìn)樣石墨爐原子吸收法*需0，分析檢測原子吸收分光光度計賣價.005-30mg，這關(guān)于實驗來歷困難的剖析是很為有利的。原子化器主要有兩大類，即原子吸收分光光度計和電熱原子化器。分析檢測原子吸收分光光度計賣價</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賣價,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">電熱原子化器普遍應(yīng)用的是原子吸收分光光度計，因而原子吸收分光光度計，就有原子吸收分光光度計和帶石墨爐的原子吸收分光光度計。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，利用空氣—乙炔測定的元素可達(dá)30多種，若使用氧化亞氮—乙炔火焰，測定的元素可達(dá)70多種。但氧化亞氮—乙炔火焰安全性較差，應(yīng)用不普遍。空氣—乙炔火焰原子吸收分光光度計，一般可檢測到PPm級（10-6），精密度1%左右。國產(chǎn)的原子吸收分光光度計，都可配備各種型號的氫化物發(fā)生器（屬電加熱原子化器），利用氫化物發(fā)生器，可測定砷（As）、銻（Sb）、鍺（Ge）、碲（Te）等元素。一般靈敏度在ng/ml級（10-9），相對標(biāo)準(zhǔn)偏差2%左右。汞(Hg)可用冷原子吸收法測定。材料原子吸收分光光度計報價原子吸收分光光度計主要用于痕量元素雜質(zhì)的分析。</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賣價,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">原子吸收分光光度計使用的首要限制是：該法只能進(jìn)行無機(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每測一種元素，要替換一次空心陰極燈光源，不能同時進(jìn)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(jìn)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。</p><p style="text-indent:25px">原子吸收分光光度計在"濃度"欄輸入標(biāo)樣系列的濃度，依據(jù)制造好的規(guī)范系列溶液濃度，設(shè)置標(biāo)樣濃度，標(biāo)樣濃度有必要從小到大的次序輸入，不用設(shè)置空白濃度。點擊"標(biāo)簽"按鈕，設(shè)置樣品標(biāo)簽，點擊"自動復(fù)制"按鈕，挑選剖析菜單，點擊"挑選"按鈕，符號需求剖析的樣品單元。翻開燈室門，手持燈座，將燈座突起對準(zhǔn)相應(yīng)的位置，按下白色固定夾按鈕，裝上空心陰燈。翻開元素?zé)?，點擊"翻開元素?zé)?按鈕，優(yōu)化空心陰燈信號，點擊"優(yōu)化"按鈕，當(dāng)能量條接近滿格時，點擊自動增益按鈕。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)。</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賣價,原子吸收分光光度計" 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是使用多的原子化器，但它很大的缺陷是原子化效率不高，原子蒸氣停留時刻短，因而火焰中的自在原子濃度很低。原因是霧化效率低，待測物遭到大量氣體的稀釋，以及金屬原子在火焰中易受氧化作用生成熱安穩(wěn)的難熔氧化物。另一個存在的問題是火焰中的化學(xué)反應(yīng)不易控制，造成火焰溫度不安穩(wěn)，火焰各部分的溫度也是不均勻的應(yīng)非原子吸收分光光度計能夠進(jìn)步原子化效率，進(jìn)步測量的靈敏度。進(jìn)樣量過小，吸收信號弱，不便于測量；進(jìn)樣量過大，在火焰原子化法中，對火焰發(fā)生冷卻效應(yīng)，在原子吸收分光光度計中，會增加除殘的困難。在實際作業(yè)中，應(yīng)測定吸光度隨進(jìn)樣量的變化，到達(dá)很滿意的吸光度的進(jìn)樣量，即為應(yīng)挑選的進(jìn)樣量。原子吸收分光光度計在分析化學(xué)中的應(yīng)用未能引起重視。分析檢測原子吸收分光光度計賣價</p><p style="text-indent:25px">原子吸收分光光度計應(yīng)用也有一定的局限性。分析檢測原子吸收分光光度計賣價</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(jìn)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(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(qiáng)度；I0為發(fā)射光強(qiáng)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。分析檢測原子吸收分光光度計賣價</p><p style="text-indent:25px">上海儀電分析儀器有限公司是一家儀器儀表、電子元器件及相關(guān)的系統(tǒng)集成的生產(chǎn)、服務(wù)及銷售，計算機(jī)軟件開發(fā)及銷售，從事貨物進(jìn)出口及技術(shù)進(jìn)出口業(yè)務(wù)?！疽婪毥?jīng)批準(zhǔn)的項目，經(jīng)相關(guān)部門批準(zhǔn)后方可開展經(jīng)營活動】儀器儀表、電子元器件及相關(guān)的系統(tǒng)集成的生產(chǎn)、服務(wù)及銷售，計算機(jī)軟件開發(fā)及銷售，從事貨物進(jìn)出口及技術(shù)進(jìn)出口業(yè)務(wù)?！疽婪毥?jīng)批準(zhǔn)的項目，經(jīng)相關(guān)部門批準(zhǔn)后方可開展經(jīng)營活動】的公司，致力于發(fā)展為創(chuàng)新務(wù)實、誠實可信的企業(yè)。儀電分析深耕行業(yè)多年，始終以客戶的需求為向?qū)В瑸榭蛻籼峁?**的分光光度計，氣相色譜，原子吸收，食品安全。儀電分析始終以本分踏實的精神和必勝的信念，影響并帶動團(tuán)隊取得成功。儀電分析創(chuàng)始人湯志東，始終關(guān)注客戶，創(chuàng)新科技，竭誠為客戶提供良好的服務(wù)。</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/2885952.html</p></div></div></div></div></div><div id="sbspw29" class="page-right twoColRt"><div id="jdfxzyp" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="ncewyam" class="recomPic likePro"><a href="http://m.cdcfah.com/cp/814588.html"><div><img 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