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id="lpre7zw" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁(yè)?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_yiqiyibiao/">儀器儀表</a>?<a href="http://www.cdcfah.com/cp/second-yiqiyibiao_fenxiyiqi/">分析儀器</a>?<a href="http://www.cdcfah.com/cp/third-fenxiyiqi_ysfxyq/">元素分析儀器</a>?上海**原子吸收分光光度計(jì)對(duì)比客戶至上上海儀電分析儀器供應(yīng)</p><div id="ti2oird" class="leftbox clearfix"><h1>上海**原子吸收分光光度計(jì)對(duì)比客戶至上上海儀電分析儀器供應(yīng)</h1><div id="vfxu33e" class="proBig"><div id="8nx29vm" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988246893719/5353894.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="8i7e7vx" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988246893719/5353894.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="ujbdxeg" 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>上海**原子吸收分光光度計(jì)對(duì)比,原子吸收分光光度計(jì)</p><p><span>***更新：</span>2021-01-06 05:12:51</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="tdaxpwt" 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(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="rl2h9bt" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="3bfh22h" class="box"><p><p style="text-indent:25px">原子吸收分光光度計(jì)內(nèi)標(biāo)法是在試樣各含量不同的一系列規(guī)范試樣中，分別參加固定量的純物質(zhì)，即內(nèi)標(biāo)物。在規(guī)范條件下測(cè)定剖析元素和內(nèi)標(biāo)元素的吸光度比，以此比值對(duì)濃度作圖，制作規(guī)范曲線，在同樣條件下，測(cè)定試樣中被測(cè)元素和內(nèi)標(biāo)元素的吸光度比值，在從規(guī)范曲線上讀取對(duì)應(yīng)的濃度，上海**原子吸收分光光度計(jì)對(duì)比。長(zhǎng)處：可以減少試驗(yàn)條件按變化引起的隨機(jī)誤差，進(jìn)步精細(xì)度，上海**原子吸收分光光度計(jì)對(duì)比。缺乏：需要使用雙通道原子吸收光譜儀，使用上受到限制。剖析速度快，可多元素和常量、微量元素一起進(jìn)行剖析，上海**原子吸收分光光度計(jì)對(duì)比。一般的發(fā)射光譜剖析法不適用于測(cè)定樣品中含量高的元素，假如通過(guò)辦法研究滿意了準(zhǔn)確測(cè)定高含量元素的要求，則常不能滿意微量元素的需要。采用電感耦合等離子體發(fā)射光譜剖析辦法成功地處理了這類(lèi)問(wèn)題。1970年北京科學(xué)儀器廠試制成WFD-Y1型單光束原子吸收分光光度計(jì)。上海**原子吸收分光光度計(jì)對(duì)比</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海**原子吸收分光光度計(jì)對(duì)比,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)堅(jiān)持血液的酸堿度和電解平衡，參與內(nèi)分泌活動(dòng)，促進(jìn)性腺發(fā)育、生育能力及性機(jī)能和糖代謝，幫忙人體、組織把人體須的物質(zhì)運(yùn)送到全身，以供代謝需求。特別當(dāng)某種微量元素供給短少時(shí)，可發(fā)生該種元素短少癥；當(dāng)某種微量元素?cái)z入過(guò)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(biāo)本的“防污染”成為分析前質(zhì)量操控環(huán)節(jié)。微量元素分析儀廠家出產(chǎn)的微量元素分析儀就很重要，如全血鉛測(cè)定，當(dāng)兒童過(guò)度觸摸鉛后，體內(nèi)全血鉛濃度超支，標(biāo)明或許導(dǎo)致神經(jīng)系統(tǒng)遭受不可逆損害，致兒童智力低下121，可當(dāng)該鉛成果超支是因**環(huán)節(jié)等分析前處理時(shí)發(fā)生污染所造成的，那么臨床醫(yī)師對(duì)此開(kāi)具的一系列驅(qū)鉛藥物又將導(dǎo)致兒童體內(nèi)其他需微量元素被一同“驅(qū)逐”排出，導(dǎo)致短少，又可引發(fā)微量元素短少性疾病。**原子吸收分光光度計(jì)排行原子吸收分光光度計(jì)一般由四大部分組成。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海**原子吸收分光光度計(jì)對(duì)比,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">原子吸收分光光度計(jì)化學(xué)攪擾是由于液相或氣相中被測(cè)元素的原子與攪擾物質(zhì)組分之間構(gòu)成熱力學(xué)更安穩(wěn)的化合物，從而影響被測(cè)元素化合物的解離及其原子化。磷酸根對(duì)鈣的攪擾，硅、鈦構(gòu)成難解離的氧化物、鎢、硼、希土元素等生成難解離的碳化物，從而使有關(guān)元素不能有用原子化，都是化學(xué)攪擾的例子?；瘜W(xué)攪擾是一種選擇性攪擾。原子吸收分光光度計(jì)電離攪擾：在高溫下原子電離，使基態(tài)原子的濃度減少，引起原子吸收信號(hào)降低，此種攪擾稱(chēng)為電離攪擾。</p><p style="text-indent:25px">原子吸收分光光度計(jì)電離效應(yīng)隨溫度升高、電離平衡常數(shù)加大而加大，隨被測(cè)元素濃度增高而減小。參加更易電離的堿金屬元素，能夠有用地消除電離攪擾。物理攪擾是非選擇性攪擾，對(duì)試樣各元素的影響基本是類(lèi)似的，配制與被測(cè)試樣類(lèi)似組成的標(biāo)準(zhǔn)樣品，是消除物理攪擾常用的方法。在不知道試樣組成或無(wú)法匹配試樣時(shí)，可采用標(biāo)準(zhǔn)參加法或稀釋法來(lái)減小和消除物理攪擾。針對(duì)糧食溫度等監(jiān)測(cè)問(wèn)題，我國(guó)從2000年就開(kāi)端實(shí)施數(shù)字糧情測(cè)控系統(tǒng)，按照必定的密度部署單總線溫度傳感器，協(xié)助糧倉(cāng)完成數(shù)字溫度的實(shí)時(shí)監(jiān)測(cè)。我國(guó)在1963年開(kāi)始對(duì)原子吸收分光光度計(jì)有一般性介紹。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海**原子吸收分光光度計(jì)對(duì)比,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">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)譜線的光源。中國(guó)原子吸收分光光度計(jì)賣(mài)價(jià)</p><p style="text-indent:25px">原子吸收分光光度計(jì)應(yīng)用不普遍。上海**原子吸收分光光度計(jì)對(duì)比</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)線纜。上海**原子吸收分光光度計(jì)對(duì)比</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)涵蓋分光光度計(jì)，氣相色譜，原子吸收，食品安全等，價(jià)格合理，品質(zhì)有保證。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(zhuān)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(zhuān)業(yè)的服務(wù)、眾多的成功案例積累起來(lái)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(lái)源地址: http://www.cdcfah.com/cp/2724038.html</p></div></div></div></div></div><div id="ztac88y" class="page-right twoColRt"><div id="jyanxov" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="qfxzgiu" 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