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id="7bt7ifs" 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>甲醛原子吸收分光光度計(jì)現(xiàn)貨,原子吸收分光光度計(jì)</p><p><span>***更新：</span>2021-01-14 00:28:25</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="gax27se" 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="gln2fxj" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="3w3kwi2" class="box"><p><p style="text-indent:25px">哪些是原子吸收分光光度計(jì)的特點(diǎn)?原子吸收分光光度計(jì)(AAS)簡(jiǎn)稱原子吸收法，是使用被測(cè)元素基態(tài)原子蒸氣對(duì)其共振輻射線的吸收特性進(jìn)行元素定量剖析的方法。原子吸收分光光度計(jì)具有以下特色：①靈敏度高：慣例剖析法對(duì)大多數(shù)元素可到達(dá)ppm級(jí);使用特別手法可到達(dá)ppb級(jí)的濃度范圍;②精密度好：一般測(cè)定RSD約為1%～3%，使用特別方法精密度可小于1%。③使用范圍廣：周期表中70多種元素可使用該法測(cè)定：④干擾少：原子吸收光譜為分立的銳線光譜，且譜線堆疊性少，干擾性小;⑤試樣用量少：選用石墨爐無(wú)火焰原子吸收法，每次丈量*需5～20μl試液或0.05～10mg的固體試樣;⑥快速簡(jiǎn)潔，甲醛原子吸收分光光度計(jì)現(xiàn)貨，易于自動(dòng)化：液體試樣?？芍苯舆M(jìn)樣，甲醛原子吸收分光光度計(jì)現(xiàn)貨，甲醛原子吸收分光光度計(jì)現(xiàn)貨，一般樣品無(wú)需進(jìn)行預(yù)別離處理，新型號(hào)產(chǎn)品儀器的進(jìn)樣和測(cè)定步驟全部自動(dòng)化完成。原子吸收分光光度計(jì)空氣—乙炔火焰原子吸收分光光度計(jì)。甲醛原子吸收分光光度計(jì)現(xiàn)貨</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="甲醛原子吸收分光光度計(jì)現(xiàn)貨,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">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)簦c(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。工業(yè)原子吸收分光光度計(jì)銷售廠家原子吸收分光光度計(jì)若使用氧化亞氮—乙炔火焰。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="甲醛原子吸收分光光度計(jì)現(xiàn)貨,原子吸收分光光度計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988246893719/5353894.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。火焰原子吸收的相對(duì)靈敏度為ug/ml-ng/ml，無(wú)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(wú)火焰原子吸收分光光度計(jì)剖析的需樣量*5–100ul。固體直接進(jìn)樣石墨爐原子吸收法*需0.005-30mg，這關(guān)于實(shí)驗(yàn)來(lái)歷困難的剖析是很為有利的。</p><p style="text-indent:25px">原子吸收分光光度計(jì)翻開乙炔鋼瓶總閥，查看是否漏氣，長(zhǎng)按焚燒開關(guān)，直至焚燒成功。將進(jìn)樣管放到裝有規(guī)范空白溶液的試劑瓶中，點(diǎn)擊"開端"按鈕，把進(jìn)樣管放到不同的試劑瓶中吸取對(duì)應(yīng)的溶液，并點(diǎn)擊"讀數(shù)"按鈕，點(diǎn)擊"打印機(jī)"按鈕，設(shè)置對(duì)應(yīng)的參數(shù)，并點(diǎn)擊"打印預(yù)覽"按鈕，點(diǎn)擊打印。挑選主界面的Worksheet按鈕，挑選剖析菜單，點(diǎn)擊"火焰實(shí)用工具"按鈕，點(diǎn)擊"封閉元素?zé)?按鈕。封閉乙炔氣閥，焚燒，把管道中殘缺的乙炔焚燒完。封閉空氣壓縮機(jī)，封閉排水。封閉軟件，點(diǎn)擊"文件"按鈕，點(diǎn)擊"封閉所有文件"按鈕，點(diǎn)擊"EXIT"按鈕。封閉儀器主機(jī)電源，封閉通風(fēng)器。原子吸收分光光度計(jì)定量關(guān)系可用郎伯-比耳定律。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="甲醛原子吸收分光光度計(jì)現(xiàn)貨,原子吸收分光光度計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419991291551872/1267970.png"></div><p style="text-indent:25px">原子吸收分光光度計(jì)是使用多的原子化器，但它很大的缺陷是原子化效率不高，原子蒸氣停留時(shí)刻短，因而火焰中的自在原子濃度很低。原因是霧化效率低，待測(cè)物遭到大量氣體的稀釋，以及金屬原子在火焰中易受氧化作用生成熱安穩(wěn)的難熔氧化物。另一個(gè)存在的問(wèn)題是火焰中的化學(xué)反應(yīng)不易控制，造成火焰溫度不安穩(wěn)，火焰各部分的溫度也是不均勻的應(yīng)非原子吸收分光光度計(jì)能夠進(jìn)步原子化效率，進(jìn)步測(cè)量的靈敏度。進(jìn)樣量過(guò)小，吸收信號(hào)弱，不便于測(cè)量；進(jìn)樣量過(guò)大，在火焰原子化法中，對(duì)火焰發(fā)生冷卻效應(yīng)，在原子吸收分光光度計(jì)中，會(huì)增加除殘的困難。在實(shí)際作業(yè)中，應(yīng)測(cè)定吸光度隨進(jìn)樣量的變化，到達(dá)很滿意的吸光度的進(jìn)樣量，即為應(yīng)挑選的進(jìn)樣量。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(lái)進(jìn)行金屬元素分析。中端原子吸收分光光度計(jì)怎么樣</p><p style="text-indent:25px">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)。甲醛原子吸收分光光度計(jì)現(xiàn)貨</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(lái)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。甲醛原子吸收分光光度計(jì)現(xiàn)貨</p><p style="text-indent:25px">上海儀電分析儀器有限公司是一家儀器儀表、電子元器件及相關(guān)的系統(tǒng)集成的生產(chǎn)、服務(wù)及銷售，計(jì)算機(jī)軟件開發(fā)及銷售，從事貨物進(jìn)出口及技術(shù)進(jìn)出口業(yè)務(wù)?！疽婪毥?jīng)批準(zhǔn)的項(xiàng)目，經(jīng)相關(guān)部門批準(zhǔn)后方可開展經(jīng)營(yíng)活動(dòng)】?jī)x器儀表、電子元器件及相關(guān)的系統(tǒng)集成的生產(chǎn)、服務(wù)及銷售，計(jì)算機(jī)軟件開發(fā)及銷售，從事貨物進(jìn)出口及技術(shù)進(jìn)出口業(yè)務(wù)?！疽婪毥?jīng)批準(zhǔn)的項(xiàng)目，經(jīng)相關(guān)部門批準(zhǔn)后方可開展經(jīng)營(yíng)活動(dòng)】的公司，是一家集研發(fā)、設(shè)計(jì)、生產(chǎn)和銷售為一體的專業(yè)化公司。儀電分析深耕行業(yè)多年，始終以客戶的需求為向?qū)В瑸榭蛻籼峁?**的分光光度計(jì)，氣相色譜，原子吸收，食品安全。儀電分析致力于把技術(shù)上的創(chuàng)新展現(xiàn)成對(duì)用戶產(chǎn)品上的貼心，為用戶帶來(lái)良好體驗(yàn)。儀電分析始終關(guān)注儀器儀表市場(chǎng)，以敏銳的市場(chǎng)洞察力，實(shí)現(xiàn)與客戶的成長(zhǎng)共贏。</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/2832113.html</p></div></div></div></div></div><div id="gf3rt3m" class="page-right twoColRt"><div id="wqiacoa" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="3yszgsp" class="recomPic likePro"><a 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