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#f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>**原子吸收分光光度計(jì)怎么樣,原子吸收分光光度計(jì)</p><p><span>***更新：</span>2021-01-17 07:12:21</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="ztvxtkw" 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="vjvif7z" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="78izqmi" class="box"><p><p style="text-indent:25px">原子吸收分光光度計(jì)電子體系。在該體系中首要有放大器和A/D變換器等組成，其間放大器便是影響整機(jī)靈敏度和穩(wěn)定性的首要相關(guān)部件，**原子吸收分光光度計(jì)怎么樣。原子吸收分光光度計(jì)輸出打印體系和數(shù)據(jù)處理體系。該體系是決定整機(jī)自動(dòng)化程度的要害部件，可以直接影響紫外可見(jiàn)分光光度計(jì)的質(zhì)量。原子吸收分光光度計(jì)操作注意事項(xiàng):留意進(jìn)樣針的清洗，**原子吸收分光光度計(jì)怎么樣,如果是進(jìn)樣針沾污或許導(dǎo)致液體由于分子張力直接沿著進(jìn)樣針向上走,不能全部加入到管中.留意由于石墨管進(jìn)樣空大小改變,跟著加熱次數(shù)增加,會(huì)有積碳在進(jìn)樣孔結(jié)塊,導(dǎo)致孔變小，**原子吸收分光光度計(jì)怎么樣,導(dǎo)致樣品加入時(shí)不能加入到管壁外面,乃至或許會(huì)呈現(xiàn)進(jìn)樣針插不進(jìn)管子。氣態(tài)的原子能發(fā)射某些特征譜線(xiàn)，也能吸收同樣波長(zhǎng)的這些譜線(xiàn)。**原子吸收分光光度計(jì)怎么樣</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="**原子吸收分光光度計(jì)怎么樣,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)如主機(jī)有加輔佐助燃?xì)獾耐ǖ?，?yīng)將輔佐助燃?xì)怅P(guān)斷，不然未參與噴霧的助燃?xì)饪墒轨`敏度下降，過(guò)大的助燃?xì)饬髁坎坏馁M(fèi)燃?xì)?，乃至不能點(diǎn)著火焰。原子吸收分光光度計(jì)一切霧化器之間不能呼喚撞擊球帽，不然靈敏度下降很大。原子吸收分光光度計(jì)運(yùn)轉(zhuǎn)的的攪擾有哪些物理攪擾：物理攪擾是指試樣在轉(zhuǎn)移、蒸發(fā)和原子化過(guò)程中，原子吸收分光光度計(jì)由于試樣任何物理特性（如粘度、表面張力、密度等）的變化而引起的原子吸收強(qiáng)度下降的效應(yīng)。高效原子吸收分光光度計(jì)排名原子吸收光譜分析工作原理：利用待測(cè)元素的共振輻射。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="**原子吸收分光光度計(jì)怎么樣,原子吸收分光光度計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419991326259040/7441452.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">原子吸收分光光度計(jì)的優(yōu)點(diǎn)是：（1）檢出限低，靈敏度高。火焰原子吸收法的檢出限可達(dá)10-9g（ppm級(jí)），石墨爐原子吸收法更高，可達(dá)ppb級(jí)。（2）丈量精度好。火焰原子吸收法測(cè)定中等和高含量元素的相對(duì)偏差可小于0.01，丈量精度已接近于經(jīng)典化學(xué)辦法。石墨爐原子吸收法的丈量精度一般為3-5。樣品由載氣（氬）帶入霧化系統(tǒng)進(jìn)行霧化后，以氣溶膠形式進(jìn)入等離子體的軸向通道，在高溫文惰性氣氛中被充沛蒸騰、原子化、電離和激起，發(fā)射出所含元素的特征譜線(xiàn)。依據(jù)特征譜線(xiàn)的存在與否，鑒別樣品中是否含有某種元素（定性分析）；根依據(jù)特征譜線(xiàn)強(qiáng)度確定樣品中相應(yīng)元素的含量（定量分析）。原子吸收分光光度計(jì)實(shí)際效果理想的元素*30余個(gè)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="**原子吸收分光光度計(jì)怎么樣,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">原子吸收分光光度計(jì)剖析是現(xiàn)在很靈敏的方法之一。火焰原子吸收的相對(duì)靈敏度為ug/ml-ng/ml，無(wú)火焰原子吸收分光光度計(jì)的肯定靈敏度在10-10-10-14之間。如果采取預(yù)富集，可進(jìn)一步進(jìn)步剖析靈敏度。因?yàn)樵摲椒ǖ撵`敏度高，使剖析手續(xù)簡(jiǎn)化可直接測(cè)定，則縮短剖析周期加快丈量進(jìn)程。因?yàn)殪`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。無(wú)火焰原子吸收分光光度計(jì)剖析的需樣量*5–100ul。固體直接進(jìn)樣石墨爐原子吸收法*需0.005-30mg，這關(guān)于實(shí)驗(yàn)來(lái)歷困難的剖析是很為有利的。原子吸收分光光度計(jì)若使用氧化亞氮—乙炔火焰。高效原子吸收分光光度計(jì)排名</p><p style="text-indent:25px">原子吸收分光光度計(jì)主要原因是未找到可產(chǎn)生銳線(xiàn)光譜的光源。**原子吸收分光光度計(jì)怎么樣</p><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。**原子吸收分光光度計(jì)怎么樣</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。儀電分析致力于為客戶(hù)提供良好的分光光度計(jì)，氣相色譜，原子吸收，食品安全，一切以用戶(hù)需求為中心，深受廣大客戶(hù)的歡迎。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。儀電分析立足于全國(guó)市場(chǎng)，依托強(qiáng)大的研發(fā)實(shí)力，融合前沿的技術(shù)理念，飛快響應(yīng)客戶(hù)的變化需求。</p></p><br /><p>文章來(lái)源地址: http://m.cdcfah.com/cp/2884583.html</p></div></div></div></div></div><div id="ymtf8ln" class="page-right 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