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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="fzrbxwi" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419991268710095/3209448.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="gfc2nvr" class="content"><p><span>需求數(shù)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(chǎn)品關(guān)鍵詞：</span>全自動原子吸收分光光度計賣價,原子吸收分光光度計</p><p><span>***更新：</span>2021-01-10 09:17:57</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="8srgh2u" 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="8rgifef" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="m39vx2a" class="box"><p><p style="text-indent:25px">電熱原子化器普遍應(yīng)用的是原子吸收分光光度計，因而原子吸收分光光度計，就有原子吸收分光光度計和帶石墨爐的原子吸收分光光度計。前者原子化的溫度在2100℃～2400℃之間，后者在2900℃～3000℃之間，全自動原子吸收分光光度計賣價。原子吸收分光光度計，利用空氣—乙炔測定的元素可達(dá)30多種，若使用氧化亞氮—乙炔火焰，測定的元素可達(dá)70多種。但氧化亞氮—乙炔火焰安全性較差，全自動原子吸收分光光度計賣價，應(yīng)用不普遍?？諝狻胰不鹧嬖游辗止夤舛扔?，一般可檢測到PPm級（10-6），精密度1%左右。國產(chǎn)的原子吸收分光光度計，都可配備各種型號的氫化物發(fā)生器（屬電加熱原子化器），利用氫化物發(fā)生器，全自動原子吸收分光光度計賣價，可測定砷（As）、銻（Sb）、鍺（Ge）、碲（Te）等元素。一般靈敏度在ng/ml級（10-9），相對標(biāo)準(zhǔn)偏差2%左右。汞(Hg)可用冷原子吸收法測定。原子吸收分光光度計一般由四大部分組成。全自動原子吸收分光光度計賣價</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="全自動原子吸收分光光度計賣價,原子吸收分光光度計" 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操作員的工作內(nèi)容主要為樣品中金屬物質(zhì)的處理和檢測，以重金屬檢測為主，需熟練掌握儀器的使用，能對儀器進(jìn)行根本的保護(hù)。1.定性剖析：判別樣品中是否含有目標(biāo)金屬物質(zhì)或?qū)悠愤M(jìn)行純度判別。2.定量剖析：金屬產(chǎn)品中各種成分的含量剖析，環(huán)境中的金屬污染物質(zhì)量剖析，食物中鉛鎘汞等有害金屬物質(zhì)檢測，精細(xì)化學(xué)品中有害金屬剖析，藥品中雜質(zhì)金屬離子含量剖析等。3.成果處理：對檢測成果進(jìn)行數(shù)據(jù)處理，給出標(biāo)準(zhǔn)化陳述。4.儀器保護(hù)：能對儀器進(jìn)行校檢，能對儀器進(jìn)行日常保護(hù)與保養(yǎng)。石油原子吸收分光光度計代理現(xiàn)在我國已有多家企業(yè)生產(chǎn)多種型號、性能較先進(jìn)的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="全自動原子吸收分光光度計賣價,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作業(yè)曲線一向不穩(wěn)定，熒光值穩(wěn)定性差，讀書單方向加大或削減，或停止一會后持續(xù)作業(yè)，讀數(shù)變大超差?？赡苄纬傻脑蚴菬衾匣招年幏綗舨环€(wěn)，發(fā)射光的強(qiáng)度有隨溫度增高而加大或變小的漂移現(xiàn)象，消除的辦法是用反向電流予以激發(fā)，改進(jìn)性能，激發(fā)無效果，予以換燈。此外，鹽酸、容器、水污染，取主規(guī)范溶液時的偶然誤差也是形成作業(yè)曲線線性關(guān)系差的原因。電壓缺乏，點火電路絲氧化變細(xì)，KBH4寄存時間過久或量少，樣品溶液酸度不夠。掃除辦法是使用穩(wěn)壓器確保220V供電，替換電爐絲，從頭配制KBH4，調(diào)大鹽酸濃度。</p><p style="text-indent:25px">原子吸收分光光度計的常見體系種類有哪些？DEMONA分光體系：中階梯光柵單色器的應(yīng)用越來越多中階。梯光柵單色器在次光譜區(qū)作業(yè)，次光譜自在光譜區(qū)很小，為了將不同級次的堆疊光譜分隔，通常采取穿插色散（在中階梯光柵光路的前方或后方添加首級輔助色散元件），使譜線色散方向和譜級散開方向正交，在焦面上構(gòu)成一個二維色散圖像。這種光柵分辨率較高，可達(dá)0.002nm，結(jié)構(gòu)細(xì)巧。中階梯光柵單色器結(jié)合面陣檢測器可一起接納整個作業(yè)波段范圍的光譜可完成快速多元素一起測定。原子吸收分光光度計，就有原子吸收分光光度計和帶石墨爐的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="全自動原子吸收分光光度計賣價,原子吸收分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419991326259040/7441452.png"></div><p style="text-indent:25px">原子吸收分光光度計組成：利用待測元素的共振輻射，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。它有單光束，雙光束，雙波道，多波道等結(jié)構(gòu)方式。其根本結(jié)構(gòu)包含光源，原子化器，光學(xué)體系和檢測體系。原子吸收分光光度計首要用于痕量元素雜質(zhì)的分析，具有靈敏度高及選擇性好兩大首要長處。多應(yīng)用于特種氣體，金屬有機(jī)化合物，金屬醇鹽中微量元素的分析?？墒菧y定每種元素均需求相應(yīng)的空心陰燈，這對檢測工作帶來不便。1965年復(fù)旦大學(xué)電光源實驗室和冶金工業(yè)部有色金屬研究所分別研制成功空心陰極燈光源。全自動原子吸收分光光度計賣價</p><p style="text-indent:25px">火焰原子吸收分光光度計應(yīng)用多。全自動原子吸收分光光度計賣價</p><p style="text-indent:25px">原子吸收分光光度計做火焰剖析時，如果發(fā)生回火，應(yīng)立即封閉燃?xì)?，避免引起傷害，確保人身和產(chǎn)業(yè)的安危。然后再將儀器開關(guān)、調(diào)節(jié)設(shè)備恢復(fù)到發(fā)動前的狀況，待查明回火原因并采納相應(yīng)措施后再持續(xù)使用。在做石墨爐剖析時，如遇到突然停水，應(yīng)敏捷切斷主電源，避免燒壞石墨爐。儀器工作時，如果遇到突然停電，此刻如正在做火焰剖析，則應(yīng)敏捷封閉燃?xì)?若正在做石墨爐剖析時，則敏捷切斷主機(jī)電源;然后將儀器各部分的操控機(jī)構(gòu)恢復(fù)到停機(jī)狀況，待通電后，再按儀器的操作程序重新開啟。全自動原子吸收分光光度計賣價</p><p 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