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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>雙光束原子吸收分光光度計(jì)多少錢(qián),原子吸收分光光度計(jì)</p><p><span>***更新：</span>2021-01-22 06:12:26</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="jzntzxt" 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(huà): </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(hào)7幢4層、9幢</p><p>[當(dāng)前離線(xiàn)] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="3vbjzf7" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="dxj5rpv" class="box"><p><p style="text-indent:25px">原子吸收分析中，首先要使待測(cè)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(duì)難溶元素的測(cè)定靈敏度還不夠理想，因此實(shí)際效果理想的元素*30余個(gè)；由于儀器使用中，需用乙炔、氫氣、氬氣、氧化亞氮（俗稱(chēng)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(xiàn)輻射源），雙光束原子吸收分光光度計(jì)多少錢(qián)、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(cè)裝置）。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，雙光束原子吸收分光光度計(jì)多少錢(qián)，雙光束原子吸收分光光度計(jì)多少錢(qián)?；鹧嬗卸喾N火焰，目前普遍應(yīng)用的是空氣—乙炔火焰。原子吸收分光光度計(jì)具有靈敏度高及選擇性好兩大主要優(yōu)點(diǎn)。雙光束原子吸收分光光度計(jì)多少錢(qián)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="雙光束原子吸收分光光度計(jì)多少錢(qián),原子吸收分光光度計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988105282341/1372565.png"></div><p style="text-indent:25px">原子吸收分光光度計(jì)的兩大特色：1.選擇性強(qiáng)。因?yàn)樵游辗止夤舛扔?jì)譜線(xiàn)*發(fā)生在主線(xiàn)系，并且譜線(xiàn)很窄，線(xiàn)重疊幾率較發(fā)射光譜要小得多，所以光譜攪擾較小選擇性強(qiáng)，并且光譜攪擾簡(jiǎn)單戰(zhàn)勝。在大多數(shù)情況下，共存元素不對(duì)原子吸收分光光度計(jì)剖析發(fā)生攪擾。因?yàn)檫x擇性強(qiáng)，使得剖析精細(xì)快速。即每種待測(cè)元素都要有一個(gè)能發(fā)射特定波長(zhǎng)譜線(xiàn)的光源。原子吸收分光光度計(jì)剖析中，首要要使待測(cè)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攪擾，使對(duì)難溶元素的測(cè)定靈敏度還不夠抱負(fù)，因此實(shí)際效果抱負(fù)的元素*30余個(gè)；因?yàn)閮x器運(yùn)用中，需用乙炔、氫氣、氬氣、氧化亞氮等，操作中需要注意。中國(guó)**原子吸收分光光度計(jì)生產(chǎn)廠(chǎng)家原子吸收分光光度計(jì)即每種待測(cè)元素都要有一個(gè)能發(fā)射特定波長(zhǎng)譜線(xiàn)的光源。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="雙光束原子吸收分光光度計(jì)多少錢(qián),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">原子吸收光譜分析，由于其靈敏度高、干擾少、分析方法簡(jiǎn)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(gè)領(lǐng)域，目前原子吸收已成為金屬元素分析的強(qiáng)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(diǎn)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(xiàn)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(lái)測(cè)定地質(zhì)樣品中70多種元素，并且大部分能夠達(dá)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。</p><p style="text-indent:25px">原子吸收分光光度計(jì)使用的首要限制是：該法只能進(jìn)行無(wú)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(jì)每測(cè)一種元素，要替換一次空心陰極燈光源，不能同時(shí)進(jìn)行多元素剖析。所用儀器為原子吸收分光光度計(jì)，它由光源、原子化器、單色器、背景校正系統(tǒng)、自動(dòng)進(jìn)樣系統(tǒng)和檢測(cè)系統(tǒng)等組成。原子吸收分光光度計(jì)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(dòng)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?，F(xiàn)在我國(guó)已有多家企業(yè)生產(chǎn)多種型號(hào)、性能較先進(jìn)的原子吸收分光光度計(jì)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="雙光束原子吸收分光光度計(jì)多少錢(qián),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">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。原子吸收分析中，首先要使待測(cè)元素呈原子狀態(tài)。直讀原子吸收分光光度計(jì)儀器</p><p style="text-indent:25px">原子吸收分光光度計(jì)應(yīng)用不普遍。雙光束原子吸收分光光度計(jì)多少錢(qián)</p><p style="text-indent:25px">原子吸收分光光度計(jì)每次燃燒前檢查廢液管是否打好水封；確認(rèn)水封無(wú)誤時(shí)方可開(kāi)機(jī)燃燒。乙炔鋼瓶放置在接近儀器室的房間內(nèi)，保持空氣流通，并應(yīng)有防火標(biāo)識(shí)。必定要運(yùn)用的乙炔**減壓閥，并裝有防回火設(shè)備。乙炔減壓閥的出口壓力為0.07MPa，不能大于0.1MPa，空氣出口壓力在0.25-0.3MPa。鋼瓶壓力顯示低于0.3MPa時(shí)要更換新瓶。乙炔氣源鄰近禁止明火或過(guò)熱高溫物體寄存，乙炔氣源不應(yīng)與氧化性氣源同放。排放的廢液應(yīng)及時(shí)傾倒處理或與當(dāng)?shù)丨h(huán)保部門(mén)。禁止帶電插拔數(shù)據(jù)線(xiàn)纜。雙光束原子吸收分光光度計(jì)多少錢(qián)</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/2957058.html</p></div></div></div></div></div><div id="tzxvpdb" class="page-right twoColRt"><div id="j5xt7hd" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="p3n5rpf" 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" 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