雙光束原子吸收分光光度計(jì)差價(jià) 服務(wù)為先上海儀電分析儀器供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺(tái)【買(mǎi)產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="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(cè)元素特征譜線(xiàn)的光，經(jīng)過(guò)試樣蒸氣時(shí)被蒸氣中待測(cè)元素基態(tài)原子所吸收，由輻射特征譜線(xiàn)光被削弱的程度來(lái)測(cè)定試樣中待測(cè)元素的含量，雙光束原子吸收分光光度計(jì)差價(jià)。原子吸收光譜儀配件的使用因原子吸收光譜"><meta name="keywords" content="雙光束原子吸收分光光度計(jì)差價(jià),原子吸收分光光度計(jì)"><link rel="canonical" href="http://www.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" 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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)差價(jià),原子吸收分光光度計(jì)</p><p><span>***更新：</span>2021-01-16 08:12:09</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="w7kzgiz" 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="xqsu7ur" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="ix7megn" class="box"><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(cè)元素特征譜線(xiàn)的光，經(jīng)過(guò)試樣蒸氣時(shí)被蒸氣中待測(cè)元素基態(tài)原子所吸收，由輻射特征譜線(xiàn)光被削弱的程度來(lái)測(cè)定試樣中待測(cè)元素的含量，雙光束原子吸收分光光度計(jì)差價(jià)。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(jiǎn)潔等特點(diǎn)，現(xiàn)已多用于冶金、地質(zhì)、采礦，雙光束原子吸收分光光度計(jì)差價(jià)、石油、輕工，雙光束原子吸收分光光度計(jì)差價(jià)、農(nóng)業(yè)、醫(yī)藥、衛(wèi)生、食物及環(huán)境監(jiān)測(cè)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(cè)元素的特征輻射經(jīng)過(guò)樣品蒸氣時(shí),被蒸氣中待測(cè)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(cè)元素的含量。原子吸收分光光度計(jì)一般由四大部分組成。雙光束原子吸收分光光度計(jì)差價(jià)</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)差價(jià),原子吸收分光光度計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988085019176/8464581.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。國(guó)內(nèi)原子吸收分光光度計(jì)怎么樣原子吸收分光光度計(jì)一般靈敏度在ng/ml級(jí)（10-9），相對(duì)標(biāo)準(zhǔn)偏差2%左右。</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)差價(jià),原子吸收分光光度計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419991311337342/3521940.png"></div><p style="text-indent:25px">哪些是原子吸收分光光度計(jì)的特點(diǎn)?原子吸收分光光度計(jì)(AAS)簡(jiǎn)稱(chēng)原子吸收法，是使用被測(cè)元素基態(tài)原子蒸氣對(duì)其共振輻射線(xiàn)的吸收特性進(jìn)行元素定量剖析的方法。原子吸收分光光度計(jì)具有以下特色：①靈敏度高：慣例剖析法對(duì)大多數(shù)元素可到達(dá)ppm級(jí);使用特別手法可到達(dá)ppb級(jí)的濃度范圍;②精密度好：一般測(cè)定RSD約為1%～3%，使用特別方法精密度可小于1%。③使用范圍廣：周期表中70多種元素可使用該法測(cè)定：④干擾少：原子吸收光譜為分立的銳線(xiàn)光譜，且譜線(xiàn)堆疊性少，干擾性小;⑤試樣用量少：選用石墨爐無(wú)火焰原子吸收法，每次丈量*需5～20μl試液或0.05～10mg的固體試樣;⑥快速簡(jiǎn)潔，易于自動(dòng)化：液體試樣?？芍苯舆M(jìn)樣，一般樣品無(wú)需進(jìn)行預(yù)別離處理，新型號(hào)產(chǎn)品儀器的進(jìn)樣和測(cè)定步驟全部自動(dòng)化完成。</p><p style="text-indent:25px">現(xiàn)在AAS在水質(zhì)中的微量重金屬(As、Hg、Cd、Cr、Cu等)檢測(cè)方面十分受用戶(hù)的青睞。例如：水中Cu大于1.5mg/L會(huì)有苦味;Cu對(duì)心病影響很大;水中Cu超標(biāo)會(huì)按捺藻類(lèi)生長(zhǎng)，影響水產(chǎn)飼養(yǎng);特別要注意的還有飲用水中的Hg、As等對(duì)人類(lèi)損害特別大，都是致的微量元素。為什么AAS在剖析檢測(cè)工作中倍受青睞?一是價(jià)格便宜、性?xún)r(jià)比高;二是操作比較簡(jiǎn)單;三是靈敏度較高。所以，廣闊科技工作者應(yīng)該重視AAS的應(yīng)用開(kāi)展情況。許多第三方檢測(cè)機(jī)構(gòu)都在很多使用AAS，現(xiàn)在開(kāi)展很快值得我們高度重視。原子吸收分光光度計(jì)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。</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)差價(jià),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">原子吸收分光光度計(jì)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(shí)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(cè)物遭到大量氣體的稀釋?zhuān)约敖饘僭釉诨鹧嬷幸资苎趸饔蒙蔁岚卜€(wěn)的難熔氧化物。另一個(gè)存在的問(wèn)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(jì)能夠進(jìn)步原子化效率，進(jìn)步測(cè)量的靈敏度。進(jìn)樣量過(guò)小，吸收信號(hào)弱，不便于測(cè)量；進(jìn)樣量過(guò)大，在火焰原子化法中，對(duì)火焰發(fā)生冷卻效應(yīng)，在原子吸收分光光度計(jì)中，會(huì)增加除殘的困難。在實(shí)際作業(yè)中，應(yīng)測(cè)定吸光度隨進(jìn)樣量的變化，到達(dá)很滿(mǎn)意的吸光度的進(jìn)樣量，即為應(yīng)挑選的進(jìn)樣量。很長(zhǎng)一段時(shí)間，原子吸收主要局限于天體物理方面的研究。上海**原子吸收分光光度計(jì)排行</p><p style="text-indent:25px">原子吸收分光光度計(jì)實(shí)際效果理想的元素*30余個(gè)。雙光束原子吸收分光光度計(jì)差價(jià)</p><p style="text-indent:25px">原子吸收分光光度計(jì)作業(yè)曲線(xiàn)一向不穩(wěn)定，熒光值穩(wěn)定性差，讀書(shū)單方向加大或削減，或停止一會(huì)后持續(xù)作業(yè)，讀數(shù)變大超差?？赡苄纬傻脑蚴菬衾匣招年幏綗舨环€(wěn)，發(fā)射光的強(qiáng)度有隨溫度增高而加大或變小的漂移現(xiàn)象，消除的辦法是用反向電流予以激發(fā)，改進(jìn)性能，激發(fā)無(wú)效果，予以換燈。此外，鹽酸、容器、水污染，取主規(guī)范溶液時(shí)的偶然誤差也是形成作業(yè)曲線(xiàn)線(xiàn)性關(guān)系差的原因。電壓缺乏，點(diǎn)火電路絲氧化變細(xì)，KBH4寄存時(shí)間過(guò)久或量少，樣品溶液酸度不夠。掃除辦法是使用穩(wěn)壓器確保220V供電，替換電爐絲，從頭配制KBH4，調(diào)大鹽酸濃度。雙光束原子吸收分光光度計(jì)差價(jià)</p><p style="text-indent:25px">上海儀電分析儀器有限公司位于徐塘路88號(hào)7幢4層、9幢。公司自成立以來(lái)，以質(zhì)量為發(fā)展，讓匠心彌散在每個(gè)細(xì)節(jié)，公司旗下分光光度計(jì)，氣相色譜，原子吸收，食品安全深受客戶(hù)的喜愛(ài)。公司秉持誠(chéng)信為本的經(jīng)營(yíng)理念，在儀器儀表深耕多年，以技術(shù)為先導(dǎo)，以自主產(chǎn)品為重點(diǎn)，發(fā)揮人才優(yōu)勢(shì)，打造儀器儀表良好品牌。在社會(huì)各界的鼎力支持下，持續(xù)創(chuàng)新，不斷鑄造***服務(wù)體驗(yàn)，為客戶(hù)成功提供堅(jiān)實(shí)有力的支持。</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/2872133.html</p></div></div></div></div></div><div id="tnkcjlx" class="page-right twoColRt"><div id="yi83mel" class="box01 margin10 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