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href="http://www.cdcfah.com/cp/third-fenxiyiqi_ysfxyq/">元素分析儀器</a>?高性能原子吸收分光光度計對比推薦咨詢上海儀電分析儀器供應</p><div id="g8weu0i" class="leftbox clearfix"><h1>高性能原子吸收分光光度計對比推薦咨詢上海儀電分析儀器供應</h1><div id="0y0a8so" class="proBig"><div id="ge0mi2w" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419991311337342/3521940.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="ygkqwug" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419991311337342/3521940.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="0ymkge0" class="content"><p><span>需求數量：</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>產品關鍵詞：</span>高性能原子吸收分光光度計對比,原子吸收分光光度計</p><p><span>***更新：</span>2021-02-03 05:20:54</p><p><span id="click" >瀏覽次數：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="y08c8us" 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>網址: </span>http://www.inesa-a.com</p><p><span>手機: </span>021-34530361</p><p><span>地址: </span>徐塘路88號7幢4層、9幢</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="8esiwe0" class="page-proshow02"><p class="title">詳細說明</p><div id="kig8ioy" class="box"><p><p style="text-indent:25px">原子吸收分光光度計常見的故障解決方法：1、故障現(xiàn)象：燃燒器底座不光潔，造成汽化的樣品被阻擋，影響靈敏度。產生原因：一般燃燒器均是由上蓋部分（燃燒縫也在此處）和底座結合而成，但是，當底座及底座管壁被腐蝕后同樣會生銹，高性能原子吸收分光光度計對比，從而造成汽化樣品因受阻而流通不暢，使測試靈敏度降低。排除方法：與清潔燃燒縫的方法一樣，用1000目水砂紙打磨底座和底座管壁。2、故障現(xiàn)象：冷卻循環(huán)水溫度過低，高性能原子吸收分光光度計對比，致使燃燒縫結露造成不易點火或火焰分叉故障。產生原因：當冷卻循環(huán)水的溫度遠遠低于室內溫度時，燃燒器的溫度同樣低于室內溫度，于是，當被汽化的樣品經過燃燒縫時，高性能原子吸收分光光度計對比，比較多樣品因受急速降溫所形成的水珠被潴留在縫石墨爐法，進樣量少，靈敏度高，有的元素也可以分析到pg/mL級。高性能原子吸收分光光度計對比</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="高性能原子吸收分光光度計對比,原子吸收分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419991311337342/3521940.png"></div><p style="text-indent:25px">原子吸收分光光度計利用待測元素的共振輻射，原子吸收分光光度計價格通過其原子蒸汽，測定其吸光度的裝置稱為原子吸收分光光度計。原子吸收分光光度計價格它有單光束，雙光束，雙波道，多波道等結構形式。其基本結構包括光源，原子化器，光學系統(tǒng)和檢測系統(tǒng)。它主要用于痕量元素雜質的分析，具有靈敏度高及選擇性好兩大主要優(yōu)點。普遍應用于各種氣體，金屬有機化合物，金屬醇鹽中微量元素的分析。但是測定每種元素均需要相應的空心陰極燈，這對檢測工作帶來不便。國內**原子吸收分光光度計原子吸收光譜分析工作原理：利用待測元素的共振輻射。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="高性能原子吸收分光光度計對比,原子吸收分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988085019176/8464581.png"></div><p style="text-indent:25px">原子吸收分光光度計原子化條件：程序升溫的條件選擇:在石墨爐原子化法中，合理選擇干燥、灰化、原子化及除殘溫度與時間是十分重要的。干燥應在稍低于溶劑沸點的溫度下進行，以防止試液飛濺。灰化的目的是除去基體和局外組分，在保證被測元素沒有損失的前提下應盡可能使用較高的灰化溫度。原子化溫度的選擇原則是，選用達到較大吸收信號的較低溫度作為原子化溫度。原子化時間的選擇，應以保證完全原子化為準。原子化階段停止通保護氣，以延長自由原子在石墨爐內的平均停留時間。除殘的目的是為了消除殘留物產生的記憶效應，除殘溫度應高于原子化溫度。</p><p style="text-indent:25px">石墨爐原子吸收分光光度計影響火焰原子吸收光譜儀靈敏度的因素有?1、霧化器：霧化器作用是將試液霧化。它是原子吸收光譜儀重要部件，其性能對測定靈敏度、精密度和化學物理干擾等產生明顯影響。霧化器噴霧越穩(wěn)定，霧滴越微小均勻，霧化效率也就越高，相應靈敏度越高，精密度越好，化學物理干擾越小。霧化器調節(jié)目前都是通過人工調節(jié)撞擊球和毛細管之間相對位置來實現(xiàn)。石墨爐原子吸收分光光度計檢測人員應將霧化器調節(jié)到霧滴細小而均勻，較好是霧滴在撞擊球周圍均勻分布。2、試液提升量：提升量大小影響到靈敏度高低。過高或過低的提升量會使霧化器霧化不穩(wěn)定。每個廠家儀器提升量范圍各不相同，各自有一定變化范圍。增大提升量辦法有：(1)增大助燃氣流量，這樣增大負壓使提升量增大。(2)縮短進樣管長度，縮短進樣管長度使管阻力減小，使試液流量增大。相反，如想降低提升量，則可以減小助燃氣流量或加長進樣管長度。裝備水循環(huán)設備,用水質較硬的自來水容易在石墨爐腔體內結水垢。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="高性能原子吸收分光光度計對比,原子吸收分光光度計" 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的實際應用：1．理論研究中的應用：原子吸收可作為物理和物理化學的一種實驗手段，對物質的一些基本性能進行測定和研究。電熱原子化器容易做到控制蒸發(fā)過程和原子化過程，所以用它測定一些基本參數有比較多優(yōu)點。用電熱原子化器所測定的一些有元素離開機體的活化能、氣態(tài)原子擴散系數、解離能、振子強度、光譜線輪廓的變寬、溶解度、蒸氣壓等。2．元素分析中的應用：原子吸收光譜分析，由于其靈敏度高、干擾少、分析方法簡單快速，現(xiàn)已普遍地應用于工業(yè)、農業(yè)、生化、地質、冶金、食品、環(huán)保等各個領域，目前原子吸收已成為金屬元素分析的強有力工具之一，而且在許多領域已作為標準分析方法。原子吸收光譜分析的特點決定了它在地質和冶金分析中的重要地位，它不只取代了許多一般的濕法化學分析，而且還與X-射線熒光分析，甚至與中子活化分析有著同等的地位。為使原子吸收分光光度計檢測功能在檢定期間內處于正常的工作狀態(tài)，確保檢驗結果的準確性和有效性。全自動原子吸收分光光度計</p><p style="text-indent:25px">原子吸收分光光度計能夠靈敏可靠地測定微量或痕量元素。高性能原子吸收分光光度計對比</p><p style="text-indent:25px">原子吸收分光光度計的安全運用留意事項：1、乙炔氣源鄰近禁止明火或過熱高溫物體寄存，乙炔氣源不應與氧化性氣源同放。2、排放的廢液應及時傾倒處理或與當地環(huán)保部門。3、禁止帶電插拔數據線纜。4、在日常作業(yè)中應經常檢查乙炔鋼瓶與減壓閥連接是否結實無漏氣。5、留意燃燒、關火次序。燃燒后操作人員不得離開！在當天不必儀器操作時,請將乙炔管道里的剩下氣體燃燒完，即直接關乙炔總開關再管空氣。6、帶石墨爐的儀器必定要留意用電安全,因為會運用380V動力電，加熱時瞬間會發(fā)生比較大的電流,所以在石墨爐處于作業(yè)狀況時，不要直接觸碰爐體部分，避免造成風險.在做試驗時隨時調查氬氣的總壓力和內氣流量計的流量,以確保石墨管可以長期運用和試驗的準確和一致性。高性能原子吸收分光光度計對比</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3135457.html</p></div></div></div></div></div><div id="goweuiw" class="page-right twoColRt"><div id="a0ge0es" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="wu00y8q" 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配件哪家強信息推薦自業(yè)物資供應" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強信息推薦自業(yè)物資供應</p></a></div><div id="csgm2cs" 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