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href="http://www.cdcfah.com/cp/third-fenxiyiqi_ysfxyq/">元素分析儀器</a>?石油原子吸收分光光度計(jì)生產(chǎn)廠(chǎng)家客戶(hù)至上上海儀電分析儀器供應(yīng)</p><div id="yx88xu9" class="leftbox clearfix"><h1>石油原子吸收分光光度計(jì)生產(chǎn)廠(chǎng)家客戶(hù)至上上海儀電分析儀器供應(yīng)</h1><div id="leahbs4" class="proBig"><div id="xbt3zb4" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988150712025/4463747.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="wai2zgv" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988150712025/4463747.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="j8hzgd4" 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>石油原子吸收分光光度計(jì)生產(chǎn)廠(chǎng)家,原子吸收分光光度計(jì)</p><p><span>***更新：</span>2021-01-29 00:21:37</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="8wyvxeo" 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="gax2yau" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="3oqse2j" class="box"><p><p style="text-indent:25px">石墨爐原子化器相對(duì)于火焰原子化器具有體積小、檢出限低用樣量少等特點(diǎn)；石墨爐原子化的缺點(diǎn)主要是基體蒸發(fā)時(shí)可能造成較大的分子吸收，爐管本身的氧化也產(chǎn)生分子吸收，背景吸收較大，一些固體微粒引起光散射造成假吸收，因此使用石墨爐原子化器必須使用背景校正裝置校正。石墨爐原子化器主要包括爐體、電源、冷卻水、氣路系統(tǒng)等，目前商品儀器的爐體又分為縱向加熱和橫向加熱?？v向加熱石墨爐（國(guó)產(chǎn)儀器的石墨爐體多為縱向加熱）由于要在石墨管兩端的電極上進(jìn)行水冷，造成沿光路方向上存在溫度梯度，使整個(gè)石墨管內(nèi)具有不等溫性導(dǎo)致基體干擾嚴(yán)重，影響原子化過(guò)程。針對(duì)上述問(wèn)題，商品儀器經(jīng)過(guò)多次的改進(jìn)，又發(fā)展了平臺(tái)原子化（在改善縱向石墨爐加熱方面有比較大的貢獻(xiàn)）、探針原子化、電容放電強(qiáng)脈沖加熱石墨爐，這些技術(shù)都在一定程度上或多或少地彌補(bǔ)了縱向加熱的缺點(diǎn)，但還是沒(méi)有解決根本問(wèn)題。而橫向加熱石墨爐技術(shù)恰恰能解決縱向的不等溫性的缺點(diǎn)，石油原子吸收分光光度計(jì)生產(chǎn)廠(chǎng)家，它較大增加了管內(nèi)恒溫區(qū)域，降低原子化溫度和時(shí)間，使得原子濃度均勻且穩(wěn)定性好，明顯地降低基體效應(yīng)和消除記憶效應(yīng)，石油原子吸收分光光度計(jì)生產(chǎn)廠(chǎng)家，同時(shí)還可降低對(duì)爐體的要求，增加了石墨管的使用壽命，石油原子吸收分光光度計(jì)生產(chǎn)廠(chǎng)家。在一定范圍內(nèi)增大燈電流可以增大輻射強(qiáng)度，同時(shí)噪音也增大，但是儀器靈敏度降低。石油原子吸收分光光度計(jì)生產(chǎn)廠(chǎng)家</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="石油原子吸收分光光度計(jì)生產(chǎn)廠(chǎng)家,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">目前原子吸收法已用來(lái)測(cè)定地質(zhì)樣品中70多種元素，并且大部分能夠達(dá)到足夠的靈敏度和比較好的精密度。鋼鐵、合金和高純金屬中多種痕量元素的分析現(xiàn)在也多用原子吸收法。原子吸收在食品分析中越來(lái)越普遍。食品和飲料中的20多種元素已有滿(mǎn)意的原子吸收分析方法。生化和臨床樣品中必需元素和有害元素的分析現(xiàn)已采用原子吸收法。有關(guān)石油產(chǎn)品、陶瓷、農(nóng)業(yè)樣品、藥物和涂料中金屬元素的原子吸收分析的文獻(xiàn)報(bào)道近些年來(lái)越來(lái)越多。水體和大氣等環(huán)境樣品的微量金屬元素分析已成為原子吸收分析的重要領(lǐng)域之一。利用間接原子吸收法尚可測(cè)定某些非金屬元素。常用原子吸收分光光度計(jì)報(bào)價(jià)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)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="石油原子吸收分光光度計(jì)生產(chǎn)廠(chǎng)家,原子吸收分光光度計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988188495975/1516361.png"></div><p style="text-indent:25px">新購(gòu)儀器應(yīng)及時(shí)開(kāi)箱,按清單逐一查對(duì)主機(jī)、附件、零配件和運(yùn)用闡明書(shū)等能否齊全,同時(shí)要檢查儀器二表觀(guān)能否有損傷。如發(fā)現(xiàn)問(wèn)題及時(shí)向消費(fèi)戶(hù)家提出,要留意維護(hù)現(xiàn)場(chǎng),以便剖析損傷緣由。在開(kāi)箱后和裝置前,必需認(rèn)真閱讀儀器運(yùn)用闡明書(shū),熟習(xí)儀器原理、構(gòu)造和運(yùn)用辦法,理解儀器對(duì)實(shí)驗(yàn),室環(huán)境條件和安裝條件的請(qǐng)求：完善條件和做好裝置前的各項(xiàng)準(zhǔn)備工作將主機(jī)、計(jì)算機(jī)、打印機(jī)、空壓機(jī)、循環(huán)冷卻水安裝、石墨爐及其電源安裝當(dāng)心從包裝箱中取出,按闡明書(shū)請(qǐng)求整體規(guī)劃。主機(jī)和附件放在工作臺(tái)上以后,調(diào)整其底腳使之平穩(wěn)、受力平均。逐一檢查主機(jī)的外光路,主機(jī)和配件電器及機(jī)械局部的表觀(guān)情況。然后依照闡明書(shū)中的請(qǐng)求銜接好儀器的電路、氣路和水路。</p><p style="text-indent:25px">原子吸收分光光度計(jì)安全操作須知：一.操作人員必須經(jīng)過(guò)儀器生產(chǎn)商的操作培訓(xùn)或持有更高級(jí)別職業(yè)資格證書(shū)；二.儀器室內(nèi)不得使用或存放其他無(wú)關(guān)的易燃、易爆等危險(xiǎn)品；三.禁止在儀器附近抽煙或使用明火；四.儀器使用前，操作人員應(yīng)對(duì)儀器進(jìn)行安全檢查并填寫(xiě)《TAS系列原子吸收分光光度計(jì)安全檢查記錄卡》；五.點(diǎn)火前排風(fēng)裝置必須打開(kāi)；六.點(diǎn)火時(shí)操作人員應(yīng)處于儀器正面左側(cè)，且右側(cè)及正后方不能站人；七.儀器使用完畢后，先關(guān)閉乙炔鋼瓶總開(kāi)關(guān)，待火焰自動(dòng)熄滅后，再關(guān)閉空壓機(jī)；八.為了防止乙炔鋼瓶總開(kāi)關(guān)泄露，所有工作結(jié)束后，應(yīng)再次確認(rèn)乙炔各壓力表指針歸零。通常選用共振吸收線(xiàn)為分析線(xiàn)，測(cè)定高含量元素時(shí)，可以選用靈敏度較低的非共振吸收線(xiàn)為分析線(xiàn)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="石油原子吸收分光光度計(jì)生產(chǎn)廠(chǎng)家,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">火焰原子吸收分光光度計(jì)使用的注意事項(xiàng)：1、應(yīng)放在干燥的房間內(nèi)，使用時(shí)放置在堅(jiān)固平穩(wěn)的工作臺(tái)上，室內(nèi)照明不宜太強(qiáng)。熱天時(shí)不能用電扇直接向儀器吹風(fēng)，防止燈泡燈絲發(fā)亮不穩(wěn)定。2、為了防止光電管疲勞，不測(cè)定時(shí)必須將試樣室蓋打開(kāi)，使光路切斷，以延長(zhǎng)光電管的使用壽命。、取拿比色皿時(shí)，手指只能捏住比色皿的毛玻璃面，而不能碰比色皿的光學(xué)表面。4、比色皿不能用堿溶液或氧化性強(qiáng)的洗滌液洗滌，也不能用毛刷清洗。比色皿外壁附著的水或溶液應(yīng)用擦鏡紙或細(xì)而軟的吸水紙吸干，不要擦拭，以免損傷它的光學(xué)表面。5、使用光度計(jì)前，應(yīng)該首先了解本儀器的結(jié)構(gòu)和工作原理，以及各個(gè)操縱旋鈕之功能。在未按通電源之前，原子吸收分光光度計(jì)應(yīng)該對(duì)火焰原子吸收分光光度計(jì)的安全性能進(jìn)行檢查，電源接線(xiàn)應(yīng)牢固，通電也要良好，各個(gè)調(diào)節(jié)旋鈕的起始位置應(yīng)該正確，然后再按通電源開(kāi)關(guān)。6、長(zhǎng)期不用時(shí)，需用將儀器使用防護(hù)罩罩住。原子吸收分光光度計(jì)安全操作須知：儀器室內(nèi)不得使用或存放其他無(wú)關(guān)的易燃、易爆等危險(xiǎn)品。生產(chǎn)原子吸收分光光度計(jì)</p><p style="text-indent:25px">原子吸收分光光度計(jì)安全操作須知：建議將氣瓶安裝在不受陽(yáng)光直接照射的室外。石油原子吸收分光光度計(jì)生產(chǎn)廠(chǎng)家</p><p style="text-indent:25px">原子吸收光譜儀所檢測(cè)，導(dǎo)致吸光度值偏高：光譜背景除了波長(zhǎng)特征之外，還有時(shí)間、空間分布特征。分子吸收通常先于原子吸收信號(hào)之前產(chǎn)生，當(dāng)有快速響應(yīng)電路和記錄裝置時(shí)，可以從時(shí)間上分辨分子吸收和原子吸收信號(hào)。樣品蒸氣在石墨爐內(nèi)分布的不均勻性，導(dǎo)致了背景吸收空間分布的不均勻性。提高溫度使單位時(shí)間內(nèi)蒸發(fā)出的背景物的濃度增加，同時(shí)也使分子解離增加。這兩個(gè)因素共同制約著背景吸收。在恒溫爐中，提高溫度和升溫速率，使分子吸收明顯下降。石油原子吸收分光光度計(jì)生產(chǎn)廠(chǎng)家</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/3053195.html</p></div></div></div></div></div><div id="a7fxurw" class="page-right twoColRt"><div id="raspmt4" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="3wnkm8h" 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" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)</p></a></div><div 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