中國(guó)原子吸收分光光度計(jì)廠家供應(yīng) 真誠(chéng)推薦上海儀電分析儀器供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺(tái)【買(mǎi)產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="原子吸收分光光度計(jì)內(nèi)標(biāo)法是在試樣各含量不同的一系列規(guī)范試樣中，分別參加固定量的純物質(zhì)，即內(nèi)標(biāo)物。在規(guī)范條件下測(cè)定剖析元素和內(nèi)標(biāo)元素的吸光度比，以此比值對(duì)濃度作圖，制作規(guī)范曲線，在同樣條件下，測(cè)定試樣中被測(cè)元素和內(nèi)標(biāo)元素的吸光度比值，中國(guó)原子"><meta name="keywords" content="中國(guó)原子吸收分光光度計(jì)廠家供應(yīng),原子吸收分光光度計(jì)"><link rel="canonical" href="http://www.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> 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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="7zzbdpj" 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>中國(guó)原子吸收分光光度計(jì)廠家供應(yīng),原子吸收分光光度計(jì)</p><p><span>***更新：</span>2021-01-21 10:14:43</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="3nr73nj" 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="dvhtlxt" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="lljnrtx" class="box"><p><p style="text-indent:25px">原子吸收分光光度計(jì)內(nèi)標(biāo)法是在試樣各含量不同的一系列規(guī)范試樣中，分別參加固定量的純物質(zhì)，即內(nèi)標(biāo)物。在規(guī)范條件下測(cè)定剖析元素和內(nèi)標(biāo)元素的吸光度比，以此比值對(duì)濃度作圖，制作規(guī)范曲線，在同樣條件下，測(cè)定試樣中被測(cè)元素和內(nèi)標(biāo)元素的吸光度比值，中國(guó)原子吸收分光光度計(jì)廠家供應(yīng)，在從規(guī)范曲線上讀取對(duì)應(yīng)的濃度，中國(guó)原子吸收分光光度計(jì)廠家供應(yīng)。長(zhǎng)處：可以減少試驗(yàn)條件按變化引起的隨機(jī)誤差，進(jìn)步精細(xì)度。缺乏：需要使用雙通道原子吸收光譜儀，中國(guó)原子吸收分光光度計(jì)廠家供應(yīng)，使用上受到限制。剖析速度快，可多元素和常量、微量元素一起進(jìn)行剖析。一般的發(fā)射光譜剖析法不適用于測(cè)定樣品中含量高的元素，假如通過(guò)辦法研究滿(mǎn)意了準(zhǔn)確測(cè)定高含量元素的要求，則常不能滿(mǎn)意微量元素的需要。采用電感耦合等離子體發(fā)射光譜剖析辦法成功地處理了這類(lèi)問(wèn)題。原子吸收分光光度計(jì)操作中必須注意安全。中國(guó)原子吸收分光光度計(jì)廠家供應(yīng)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="中國(guó)原子吸收分光光度計(jì)廠家供應(yīng),原子吸收分光光度計(jì)" 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(jì)測(cè)土壤巖石中砷銻鉍汞時(shí)常見(jiàn)問(wèn)題的剖析：氫化物的產(chǎn)生條件與技術(shù)指標(biāo)是作業(yè)曲線是否滿(mǎn)足要求的條件，測(cè)驗(yàn)不同的元素應(yīng)設(shè)定不同的氫化物的產(chǎn)生條件，條件的設(shè)定符合儀器使用說(shuō)明書(shū)中給定的推薦剖析條件。在測(cè)驗(yàn)規(guī)范系列時(shí)，如儀器靈敏度不符合要求，則應(yīng)加大負(fù)高壓或加大電流，從頭測(cè)定空白，然后測(cè)規(guī)范系列。別的，當(dāng)規(guī)范系列含量太低時(shí)，該儀器靈敏度達(dá)不到。規(guī)范貯備液主張購(gòu)買(mǎi)國(guó)家規(guī)范物質(zhì)中間制造的規(guī)范溶液。在配置的過(guò)程中應(yīng)注意所用水、試劑、容器的污染問(wèn)題，所用容器應(yīng)該在使用前用硝酸溶液浸泡24小時(shí)，沖凈后使用。規(guī)范溶液在長(zhǎng)期貯備過(guò)程中也會(huì)出現(xiàn)蒸發(fā)，因而需要確保規(guī)范溶液在有效期之內(nèi)。國(guó)產(chǎn)**原子吸收分光光度計(jì)排名由于汞的多應(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。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="中國(guó)原子吸收分光光度計(jì)廠家供應(yīng),原子吸收分光光度計(jì)" 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(jì)的安全運(yùn)用留意事項(xiàng)：1、在運(yùn)輸過(guò)程中遭到劇烈碰擊的儀器，主機(jī)不能冒然通電。2、長(zhǎng)期在惡劣條件寄存的儀器應(yīng)該經(jīng)常維護(hù)保養(yǎng)。3、一旦儀器的報(bào)警器發(fā)出聲音,應(yīng)當(dāng)即關(guān)掉氣源，并關(guān)機(jī)。4、請(qǐng)您隨時(shí)留意，一旦發(fā)生異味，請(qǐng)當(dāng)即切斷電源，關(guān)掉乙炔鋼瓶總閥門(mén)。請(qǐng)將空壓機(jī)的空氣管插入燃?xì)夤艿乐?，并涂改肥皂水以檢查燃?xì)夤艿栏鹘宇^是否漏氣，特別應(yīng)該檢查霧化筒后部的防爆塞是否密封無(wú)缺，決不能在發(fā)生漏氣時(shí)燃燒操作，否則容易發(fā)生回火爆。</p><p style="text-indent:25px">傳感器監(jiān)管糧食廠，原子吸收分光光度計(jì)功不行沒(méi)，愛(ài)糧節(jié)糧監(jiān)測(cè)技術(shù)少不了，糧食，是咱們賴(lài)以生存的條件之一，據(jù)了解，我國(guó)1/5的耕地面積被重金屬污染(近2000萬(wàn)公頃)，每年受重金屬污染的糧食高達(dá)1200萬(wàn)噸，經(jīng)濟(jì)損失高達(dá)數(shù)十億元。因而，原子吸收分光光度計(jì)不行少，都有哪些儀器儀表來(lái)助力咱們監(jiān)測(cè)呢？針對(duì)糧食污染等問(wèn)題，咱們需要檢測(cè)鎘、鉛等重金屬含量，黃曲霉有害物質(zhì)B1等有害物質(zhì)以及農(nóng)藥殘留等食品平安目標(biāo)。重金屬含量檢測(cè)常用的辦法有原子熒光光譜法、原子吸收光譜法、電感耦合等離子質(zhì)譜法等，有害物質(zhì)的分析一般采用酶聯(lián)免疫法、薄層色譜法和有效液相色譜法，農(nóng)殘檢測(cè)則常用液相色譜-質(zhì)譜聯(lián)用法和氣相色譜-質(zhì)譜聯(lián)用法。很長(zhǎng)一段時(shí)間，原子吸收主要局限于天體物理方面的研究。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="中國(guó)原子吸收分光光度計(jì)廠家供應(yīng),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)作業(yè)曲線一向不穩(wěn)定，熒光值穩(wěn)定性差，讀書(shū)單方向加大或削減，或停止一會(huì)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(wú)效果，予以換燈。此外，鹽酸、容器、水污染，取主規(guī)范溶液時(shí)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(diǎn)火電路絲氧化變細(xì)，KBH4寄存時(shí)間過(guò)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。原子吸收分光光度計(jì)由于儀器使用中，需用乙炔、氫氣、氬氣、氧化亞氮（俗稱(chēng)笑氣）等。雙光束原子吸收分光光度計(jì)銷(xiāo)售廠家</p><p style="text-indent:25px">原子吸收分光光度計(jì)精密度1%左右。中國(guó)原子吸收分光光度計(jì)廠家供應(yīng)</p><p style="text-indent:25px">你知道怎樣正確挑選原子吸收分光光度計(jì)嗎？1.剖析線挑選：通常選用共振吸收線為剖析線，測(cè)定高含量元素時(shí)，能夠選用靈敏度較低的非共振吸收線為剖析線。As、Se等共振吸收線位于200nm以下的遠(yuǎn)紫外區(qū)，火焰組分對(duì)其有明顯吸收，故用火焰原子吸收法測(cè)定這些元素時(shí)，不宜選用共振吸收線為剖析線。2.狹縫寬度挑選：狹縫寬度影響光譜通帶寬度與檢測(cè)器接受的能量。原子吸收分光光度計(jì)中，光譜堆疊干擾的幾率小，能夠答應(yīng)運(yùn)用較寬的狹縫。調(diào)節(jié)不同的狹縫寬度，測(cè)定吸光度隨狹縫寬度而變化，當(dāng)有其它的譜線或非吸收光進(jìn)入光譜通帶內(nèi)，吸光度將當(dāng)即減小。不引起吸光度減小的很大狹縫寬度，即為應(yīng)選取的合適的狹縫寬度。中國(guó)原子吸收分光光度計(jì)廠家供應(yīng)</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/2946184.html</p></div></div></div></div></div><div id="hvh5jlx" class="page-right twoColRt"><div id="lpbl5xz" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="t5tn7fj" 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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