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class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)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(chǎn)品關(guān)鍵詞：</span>空氣原子吸收分光光度計(jì)報(bào)價(jià),原子吸收分光光度計(jì)</p><p><span>***更新：</span>2021-01-26 05:15:51</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="eoq283i" 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(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] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="8jseqnz" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="37qifcj" class="box"><p><p style="text-indent:25px">石墨爐原子吸收分光光度計(jì)，可以測(cè)定近50種元素，空氣原子吸收分光光度計(jì)報(bào)價(jià)，空氣原子吸收分光光度計(jì)報(bào)價(jià)。石墨爐法，進(jìn)樣量少，靈敏度高，有的元素也可以分析到pg/mL級(jí)。元素在熱解石墨爐中被加熱原子化，成為基態(tài)原子蒸汽，對(duì)空心陰極燈發(fā)射的特征輻射進(jìn)行選擇性吸收。在一定濃度范圍內(nèi)，其吸收強(qiáng)度與試液中被測(cè)元素的含量成正比。其定量關(guān)系可用郎伯-比耳定律，空氣原子吸收分光光度計(jì)報(bào)價(jià)，A=-lgI/Io=-lgT=KCL，式中I為透射光強(qiáng)度；I0為發(fā)射光強(qiáng)度；T為透射比；L為光通過原子化器光程(長(zhǎng)度)，每臺(tái)儀器的L值是固定的；C是被測(cè)樣品濃度；所以A=KC。由于汞的多應(yīng)用，對(duì)大氣中微量汞的測(cè)定曾利用原子吸收光譜原理設(shè)計(jì)了測(cè)汞儀。空氣原子吸收分光光度計(jì)報(bào)價(jià)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="空氣原子吸收分光光度計(jì)報(bào)價(jià),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">微量元素分析儀廠家生產(chǎn)的微量元素分析儀技術(shù)參數(shù)：1、設(shè)備裝備：雙通道譜、溶出同測(cè)工作站。2、檢測(cè)辦法：選用衛(wèi)生部規(guī)范辦法微分電位溶出法檢測(cè)鉛、銅、鎬；選用譜法檢測(cè)鋅、鐵、鈣、鎂、等微量元素。3、標(biāo)本：全血、血清、頭發(fā)。4、技術(shù)目標(biāo)電位溶出極譜。檢測(cè)下限<0.1μg/L【對(duì)Pb（l）】<5×10-8m0l/L重復(fù)性誤差RSD<3RSD<1校準(zhǔn)曲線的度RSD<8RSD<2線性關(guān)系R>0.9990R≥0.9990。5、可檢測(cè)鋅、鐵、鈣、鎂、鏢、鉛、銅、鎬八項(xiàng)微量元素。6、雙通道且可一同測(cè)量，一個(gè)通道檢測(cè)鉛銅，另一個(gè)通道檢測(cè)鋅鐵鈣鎂鏢。國(guó)內(nèi)原子吸收分光光度計(jì)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="空氣原子吸收分光光度計(jì)報(bào)價(jià),原子吸收分光光度計(jì)" 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(jì)不僅能夠防止不合格的糧食進(jìn)入市場(chǎng)或許成為儲(chǔ)備糧，也能夠發(fā)現(xiàn)糧食存在的問題，協(xié)助糧農(nóng)與農(nóng)業(yè)部門及時(shí)采納辦法，改善糧食生產(chǎn)方式或許治理環(huán)境污染，進(jìn)步糧食質(zhì)量。現(xiàn)在，我國(guó)現(xiàn)已逐步建立糧食質(zhì)量平安檢測(cè)監(jiān)測(cè)體系，添加基層糧食檢驗(yàn)監(jiān)測(cè)機(jī)構(gòu)，進(jìn)步糧食質(zhì)量平安監(jiān)測(cè)預(yù)警與檢測(cè)才能。首先，是溫度傳感器，它是指能感觸溫度并轉(zhuǎn)換成可用輸出信號(hào)的傳感器，溫度傳感器是很早開發(fā)，使用較廣的一類傳感器。溫度傳感器的市場(chǎng)份額超過了其他的傳感器。從17世紀(jì)初人們開端利用溫度進(jìn)行測(cè)量。</p><p style="text-indent:25px">原子吸收分光光度計(jì)的工作原理：原子吸收光譜儀又稱原子吸收分光光度計(jì)，根據(jù)物質(zhì)基態(tài)原子蒸汽對(duì)特征輻射吸收的作用來進(jìn)行金屬元素分析。它能夠靈敏可靠地測(cè)定微量或痕量元素。原子吸收分光光度計(jì)一般由四大部分組成，即光源(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)(包括光電轉(zhuǎn)換器及相應(yīng)的檢測(cè)裝置)。元素在熱解石墨爐中被加熱原子化，成為基態(tài)原子蒸汽，對(duì)空心陰極燈發(fā)射的特征輻射進(jìn)行選擇性吸收。在一定濃度范圍內(nèi)，其吸收強(qiáng)度與試液中被的含量成正比。我國(guó)在1963年開始對(duì)原子吸收分光光度計(jì)有一般性介紹。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="空氣原子吸收分光光度計(jì)報(bào)價(jià),原子吸收分光光度計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419991268710095/3209448.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?；鹧嬖游盏南鄬?duì)靈敏度為ug/ml-ng/ml，無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。無火焰原子吸收分光光度計(jì)剖析的需樣量?jī)H5–100ul。固體直接進(jìn)樣石墨爐原子吸收法僅需0.005-30mg，這關(guān)于實(shí)驗(yàn)來歷困難的剖析是很為有利的。1965年復(fù)旦大學(xué)電光源實(shí)驗(yàn)室和冶金工業(yè)部有色金屬研究所分別研制成功空心陰極燈光源?？諝庠游辗止夤舛扔?jì)報(bào)價(jià)</p><p style="text-indent:25px">原子吸收分光光度計(jì)汞(Hg)可用冷原子吸收法測(cè)定?？諝庠游辗止夤舛扔?jì)報(bào)價(jià)</p><p style="text-indent:25px">原子吸收分光光度計(jì)在"濃度"欄輸入標(biāo)樣系列的濃度，依據(jù)制造好的規(guī)范系列溶液濃度，設(shè)置標(biāo)樣濃度，標(biāo)樣濃度有必要從小到大的次序輸入，不用設(shè)置空白濃度。點(diǎn)擊"標(biāo)簽"按鈕，設(shè)置樣品標(biāo)簽，點(diǎn)擊"自動(dòng)復(fù)制"按鈕，挑選剖析菜單，點(diǎn)擊"挑選"按鈕，符號(hào)需求剖析的樣品單元。翻開燈室門，手持燈座，將燈座突起對(duì)準(zhǔn)相應(yīng)的位置，按下白色固定夾按鈕，裝上空心陰燈。翻開元素?zé)?，點(diǎn)擊"翻開元素?zé)?按鈕，優(yōu)化空心陰燈信號(hào)，點(diǎn)擊"優(yōu)化"按鈕，當(dāng)能量條接近滿格時(shí)，點(diǎn)擊自動(dòng)增益按鈕?？諝庠游辗止夤舛扔?jì)報(bào)價(jià)</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3014259.html</p></div></div></div></div></div><div id="ynphzbn" class="page-right twoColRt"><div id="nc7prdf" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="2mdacta" 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(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" 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