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src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988085019176/8464581.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="xhbnkg8" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988085019176/8464581.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="2myfw8q" 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>環(huán)境檢測原子吸收分光光度計排行,原子吸收分光光度計</p><p><span>***更新：</span>2021-02-03 07:12:38</p><p><span id="click" >瀏覽次數：2次</span></p><a rel="nofollow" class="button">聯系我們</a></div></div><div id="cmeqmd7" 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="cgnzw3t" class="page-proshow02"><p class="title">詳細說明</p><div id="mgiurd3" class="box"><p><p style="text-indent:25px">原子吸收分光光度計的工作流程：以測定試液中鎂離子的含量為例，先將試液噴射成霧狀并引入到火焰中，含鎂鹽的霧滴在火焰溫度下，蒸發(fā)、離解成鎂原子形成原子蒸氣。當用鎂的空心陰極燈作光源，它便輻射出具有波長為285.2nm的鎂的特征光譜(波)，當其通過火焰中一定厚度的鎂原子蒸氣時，部分光被蒸氣中基態(tài)鎂原子所吸收而使強度有所減弱。通過單色器分光后被檢測器接受，環(huán)境檢測原子吸收分光光度計排行，檢測器測得鎂的285，環(huán)境檢測原子吸收分光光度計排行.2nm譜線光的減弱程度，環(huán)境檢測原子吸收分光光度計排行，進而即可求出試樣中鎂的含量。原子吸收分光光度計主要原因是未找到可產生銳線光譜的光源。環(huán)境檢測原子吸收分光光度計排行</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="環(huán)境檢測原子吸收分光光度計排行,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作用：原子吸收分光光度計的作用是進樣器把溶液中的金屬離子提升到原子化器，用原子化器（石墨爐原子化器或者火焰原子化器）把液體通過高溫的方式轉化為氣態(tài)原子蒸汽，由于元素不同，導致特征譜線不同，不同的原子會吸收其特征波長的光子。這時候從光源（空心陰極燈）發(fā)出來的特征譜線通過原子蒸汽被吸收一部分，比較原始光強（I0）和吸收后的光強(I)，用比爾定律得出吸收比率，進而用標準曲線法或者標準加入法計算濃度。民用原子吸收分光光度計設備原子吸收分光光度計具有靈敏度高及選擇性好兩大主要優(yōu)點。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="環(huán)境檢測原子吸收分光光度計排行,原子吸收分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988105282341/1372565.png"></div><p style="text-indent:25px">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。1、在儀器設備兩次檢定期間，對該設備進行期間核查，以驗證設備是否保持校準時的狀態(tài),確保檢驗結果的準確性和有效性原子吸收分光光度計。2、范圍適用于各型號原子吸收分光光度計的期間核查。3、核查項目3.1標準曲線相關系數、精密度（RSD）、檢出限（L）、以及采用有證的標準物質（已知濃度u并給出不確定度Ur的任何一種單標準物質）進行檢測結果的評定。3.2期間核查時可用上述的核查方法中的一種或多種。4、核查依據各型號原子吸收分光光度計使用說明書以及相關的資料。</p><p style="text-indent:25px">原子吸收分光光度計的實際應用：1、有機物分析中的應用：利用間接法可以測定多種有機物。8-羥基喹啉(Cu)、醇類(Cr)、醛類(Ag)、酯類(Fe)、酚類(Fe)、聯乙酰(Ni)、酞酸(Cu)、脂肪胺(co)、氨基酸(Cu)、維生素C(Ni)、氨茴酸(Co)、雷米封(Cu)、甲酸奎寧(Zn)、有機酸酐(Fe)、苯甲基青霉素(Cu)、葡萄糖(Ca)、環(huán)氧化物水解酶(PbO、含鹵素的有機化合物(Ag)等多種有機物，均通過與相應的金屬元素之間的化學計量反應而間接測定。2、金屬化學形態(tài)分析中的應用：通過氣相色譜和液體色譜分離然后以原子吸收光譜加以測定，可以分析同種金屬元素的不同有機化合物。例如汽油中5種烷基鉛，大氣中的5種烷基鉛、烷基硒、烷基胂、烷基錫，水體中的烷基胂、烷基鉛、烷基揭、烷基汞、有機鉻，生物中的烷基鉛、烷基汞、有機鋅、有機銅等多種金屬有機化合物，均可通過不同類型的光譜原子吸收聯用方式加以鑒別和測定。在實際工作中，應測定吸光度隨進樣量的變化，達到滿意的吸光度的進樣量，即為應選擇的進樣量。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="環(huán)境檢測原子吸收分光光度計排行,原子吸收分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419991252020619/9480950.png"></div><p style="text-indent:25px">原子吸收分光光度計能檢測哪些元素：1、堿金屬檢測：堿金屬（Li，Na，K，Rb，Cs）是用原子吸收分光光度法測定的靈敏度比較高的一類元素。堿金屬的沸點較低，通過火焰區(qū)能立刻蒸發(fā)產生背景吸收。2、堿土金屬檢測：堿土金屬元素（Be，Mg，Ca，Sr，Ba）在火焰中易生成氧化物和少量的MOH型化合物，原子化效率強烈地依賴于火焰組成和火焰高度，因此，必須仔細地控制燃氣和助燃氣的比例，恰當地調節(jié)燃燒器的高度。3、有色金屬檢測：這一組元素包括Cu，Zn，Cd，Hg，Sn，Pb，Sb，Bi等。4、黑色金屬檢測：這一組元素包括Fe，Ni，Cr，Mo，Mn等。在合金中，這些元素常共存在一起。5、貴金屬檢測：貴金屬在某些試樣中含量比較低，一般要經過化學富集之后才能進行檢測。6、難熔元素檢測：這組元素包括B，Be，Si，Ge，V，Nb，Ta，W，Th，U，Re，Sc，Y和稀土元素。它們容易形成難離解的耐熔氧化物，必須在強還原性空氣—乙炔火焰中進行測定。原子吸收分光光度計根據物質基態(tài)原子蒸汽對特征輻射吸收的作用來進行金屬元素分析。專業(yè)原子吸收分光光度計單價</p><p style="text-indent:25px">原子吸收分光光度計是屬于原子光譜。環(huán)境檢測原子吸收分光光度計排行</p><p style="text-indent:25px">調整熄滅器位置的目的在于使其縫口平行于外光路的光軸并位于正下方,以保證空心陰極燈的光束完整經過火焰并集聚于火焰中心而取得較高的靈活度。熄滅器的調整是在靜態(tài)下停止的。常以銅燈(324.1nm)作光源,按前述調整好燈的位置,調理負高壓,使透射比為1：100％，然后用儀器附帶的透光檢驗工具或一根火柴棒插入熄滅器縫口里。當對光棒直立在熄滅器縫口的正中心時,透射比應接近0%,否則仍需對熄滅器位置作前后調整，然后拍對光棒垂直置于縫口兩端,其透射比應降至30%,否則應改動熄滅器轉角直至到達請求為止。當靜態(tài)調整終了之后,若有必要,可在點火的狀況下,吸噴銅規(guī)范溶液,調整熄滅器的前后轉角及其高度，丈量不同位置時的吸光度。對應予大吸光度的位置為位置,但熄滅器不應擋光。由于不同元素的熄滅器高度是不同的，運用時應依據不同的元素重新調理熄滅器高度。環(huán)境檢測原子吸收分光光度計排行</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3138341.html</p></div></div></div></div></div><div id="c8dzb3t" class="page-right twoColRt"><div id="8qcel8i" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="xmjgi4i" 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" 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