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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: </span>021-34530361</p><p><span>地址: </span>徐塘路88號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="ielnuiz" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="qyf87rr" class="box"><p><p style="text-indent:25px">原子吸收分光光度計根據(jù)物質(zhì)基態(tài)原子蒸汽對特征輻射吸收的作用來進(jìn)行金屬元素分析，它能夠靈敏可靠的測定微量或痕量元素。原子吸收分光光度計一般由光源（單色銳線輻射源）、試樣原子化器、單色儀和數(shù)據(jù)處理系統(tǒng)四大部分組成。原子吸收分光光度法應(yīng)用也有一定的局限性，即每種待測元素都要有一個能發(fā)射特定波長譜線的光源。原子吸收分析中，便攜原子吸收分光光度計設(shè)備，首先要使待測元素呈原子狀態(tài)，而原子化往往是將溶液噴霧到火焰中去實現(xiàn)，這就存在理化方面的干擾，使對難溶元素的測定靈敏度還不夠理想，因此實際效果理想的元素只30余個；由于儀器使用中，需用乙炔，便攜原子吸收分光光度計設(shè)備、氫氣、氬氣、氧化亞氮（俗稱笑氣）等，便攜原子吸收分光光度計設(shè)備，操作中必須注意安全。原子吸收分光光度計安全操作須知：禁止在儀器附近抽煙或使用明火。便攜原子吸收分光光度計設(shè)備</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="便攜原子吸收分光光度計設(shè)備,原子吸收分光光度計" 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的安全運用留意事項：1、在運輸過程中遭到劇烈碰擊的儀器，主機不能冒然通電。2、長期在惡劣條件寄存的儀器應(yīng)該經(jīng)常維護(hù)保養(yǎng)。3、一旦儀器的報警器發(fā)出聲音,應(yīng)當(dāng)即關(guān)掉氣源，并關(guān)機。4、請您隨時留意，一旦發(fā)生異味，請當(dāng)即切斷電源，關(guān)掉乙炔鋼瓶總閥門。請將空壓機的空氣管插入燃?xì)夤艿乐?，并涂改肥皂水以檢查燃?xì)夤艿栏鹘宇^是否漏氣，特別應(yīng)該檢查霧化筒后部的防爆塞是否密封無缺，決不能在發(fā)生漏氣時燃燒操作，否則容易發(fā)生回火爆開。5、每次燃燒前檢查廢液管是否打好水封；確認(rèn)水封無誤時方可開機燃燒。6、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。7、必定要運用的乙炔專屬減壓閥，并裝有防回火設(shè)備。常見原子吸收分光光度計原子吸收分光度計分析樣品優(yōu)點：選擇性好。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="便攜原子吸收分光光度計設(shè)備,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(chǎn)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(jié)合而成，但是，當(dāng)?shù)鬃暗鬃鼙诒桓g后同樣會生銹，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，致使燃燒縫結(jié)露造成不易點火或火焰分叉故障。產(chǎn)生原因：當(dāng)冷卻循環(huán)水的溫度遠(yuǎn)遠(yuǎn)低于室內(nèi)溫度時，燃燒器的溫度同樣低于室內(nèi)溫度，于是，當(dāng)被汽化的樣品經(jīng)過燃燒縫時，比較多樣品因受急速降溫所形成的水珠被潴留在縫</p><p style="text-indent:25px">原子吸收分光光度計的實際應(yīng)用：1．理論研究中的應(yīng)用：原子吸收可作為物理和物理化學(xué)的一種實驗手段，對物質(zhì)的一些基本性能進(jìn)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(shù)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(shù)、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(yīng)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(yīng)用于工業(yè)、農(nóng)業(yè)、生化、地質(zhì)、冶金、食品、環(huán)保等各個領(lǐng)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(lǐng)域已作為標(biāo)準(zhǔn)分析方法。原子吸收光譜分析的特點決定了它在地質(zhì)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(xué)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。原子吸收分光光度計空氣—乙炔火焰原子吸收分光光度計。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="便攜原子吸收分光光度計設(shè)備,原子吸收分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419991236161257/4858141.png"></div><p style="text-indent:25px">原子吸收分光光度法常使用哪些定量分析方法?規(guī)范曲線法：先配制相同基體的含有不同濃度待測元素的系列規(guī)范溶液，在選定的實驗條件下分別測其吸光度.以扣除空白值之后的吸光度為縱坐標(biāo)，規(guī)范溶液濃度為橫坐標(biāo)繪制規(guī)范曲線。在同樣操作條件下測定試樣溶液的吸光度，從規(guī)范曲線查得試樣溶液的濃度。運用該辦法時應(yīng)留意：配制的規(guī)范溶液濃度應(yīng)在吸光度與濃度成線性的范圍內(nèi)；整個剖析過程中操作條件應(yīng)堅持不變。另外，規(guī)范曲線法固然簡單，但必需保證規(guī)范樣品與試樣的物理性質(zhì)相同，保證不存在干擾物，關(guān)于組成尚不分明的樣品不能用規(guī)范曲線法?；鹧嬖踊ɡ没鹧鏌崮苁乖嚇愚D(zhuǎn)化為氣態(tài)原子。高校原子吸收分光光度計排行</p><p style="text-indent:25px">原子吸收分光光度計采用新的電子技術(shù)。便攜原子吸收分光光度計設(shè)備</p><p style="text-indent:25px">原子吸收分光光度計與紫外可見分光光度計的區(qū)別：1、標(biāo)準(zhǔn)溶液:原子吸收分光光度計使用的標(biāo)準(zhǔn)溶液在4℃溫度下可保存較長時間，放置室溫后可正常使用。紫外可見分光光度計樣品及標(biāo)準(zhǔn)溶液顯色穩(wěn)定后需在半小時之內(nèi)測定，且對溫度及時間要求比較苛刻。2、檢測時間:原子吸收分光光度計分析速度較快，操作簡便，半個小時內(nèi)能連續(xù)測定幾十個試樣中的5、6種元素。紫外可見分光光度計由于有顯色過程，測量時間相對而言較長，操作比較麻煩。3、應(yīng)用對象：原子吸收分光光度計針對于金屬微量元素的定量分析，火焰法：液樣含量范圍通常在0。1PPM~15PPM之間（個別元素如錫會高些）；石墨爐分析在火焰法的基礎(chǔ)上則能提高2~3個數(shù)級，即液樣含量范圍通常在0。001PPM~0。100PPM之間。紫外可見分光光度計分析含量范圍一般在1PPM以上，主要分析高含量的樣品。4、操作性：原子吸收分光光度計操作簡單,對化驗員要求比較低，干擾低。紫外可見分光光度計樣品處理極為復(fù)雜,對化驗員要求比較高。便攜原子吸收分光光度計設(shè)備</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3116670.html</p></div></div></div></div></div><div id="m7fi2jq" class="page-right twoColRt"><div id="olce3yc" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="kx2uk3e" 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" 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