上海紫外可見(jiàn)分光光度計(jì)選擇服務(wù)為先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="紫外分光光度法是根據(jù)物質(zhì)的吸收光譜，來(lái)研究物質(zhì)的成分、結(jié)構(gòu)和物質(zhì)間相互作用的有效手段。紫外分光光度計(jì)可以在紫外可見(jiàn)光區(qū)任意選擇不同波長(zhǎng)的光。物質(zhì)的吸收光譜就是物質(zhì)中的分子和原子吸收了入射光中的某些特定波長(zhǎng)的光能量，相應(yīng)地發(fā)生了分子振動(dòng)能級(jí)躍"><meta name="keywords" content="上海紫外可見(jiàn)分光光度計(jì)選擇,紫外可見(jiàn)分光光度計(jì)"><link rel="canonical" href="http://m.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"> <meta 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clearfix"><section class="container clearfix tcPro"><section class="home-main container clearfix"><div id="rpr7ycc" class="twoCol"><div id="gamj438" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://m.cdcfah.com/">首頁(yè)?<a href="http://m.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://m.cdcfah.com/cp/first-_yiqiyibiao/">儀器儀表</a>?<a href="http://m.cdcfah.com/cp/second-yiqiyibiao_gxyq/">光學(xué)儀器</a>?<a href="http://m.cdcfah.com/cp/third-gxyq_gpygdj/">光譜儀、光度計(jì)</a>?上海紫外可見(jiàn)分光光度計(jì)選擇服務(wù)為先上海儀電分析儀器供應(yīng)</p><div id="p2lp9ne" class="leftbox clearfix"><h1>上海紫外可見(jiàn)分光光度計(jì)選擇服務(wù)為先上海儀電分析儀器供應(yīng)</h1><div id="7272edp" class="proBig"><div id="tipmbnp" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396592216930546/1658567.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="jtvnmy2" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396592216930546/1658567.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="wk3bsub" 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>上海紫外可見(jiàn)分光光度計(jì)選擇,紫外可見(jiàn)分光光度計(jì)</p><p><span>***更新：</span>2020-11-02 07:22:22</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="u74hz2m" 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] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="qurodub" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="kzw22km" class="box"><p><p> 紫外分光光度法是根據(jù)物質(zhì)的吸收光譜，來(lái)研究物質(zhì)的成分、結(jié)構(gòu)和物質(zhì)間相互作用的有效手段。紫外分光光度計(jì)可以在紫外可見(jiàn)光區(qū)任意選擇不同波長(zhǎng)的光。物質(zhì)的吸收光譜就是物質(zhì)中的分子和原子吸收了入射光中的某些特定波長(zhǎng)的光能量，相應(yīng)地發(fā)生了分子振動(dòng)能級(jí)躍遷和電子能級(jí)躍遷的結(jié)果。 </p> <p> 環(huán)境中的塵埃和腐蝕性氣體亦可以影響機(jī)械系統(tǒng)的靈活性、降低各種限位開(kāi)關(guān)、按鍵、光電偶合器的可靠性，也是造成必須學(xué)部件鋁膜銹蝕的原因之一： </p> <p> 紫外分光光度計(jì)儀器使用一定周期后，內(nèi)部會(huì)積累一定量的塵埃，由維修工程師或在工程師指導(dǎo)下定期開(kāi)啟儀器外罩對(duì)內(nèi)部進(jìn)行除塵工作： </p> <p> 將各發(fā)熱元件的散熱器重新緊固，對(duì)光學(xué)盒的密封窗口進(jìn)行清潔，必要時(shí)對(duì)光路進(jìn)行校準(zhǔn)，對(duì)機(jī)械部分進(jìn)行清潔和必要的潤(rùn)滑?；謴?fù)原狀，再進(jìn)行一些必要的檢測(cè)、調(diào)校與記錄，上海紫外可見(jiàn)分光光度計(jì)選擇。分析儀器工作者要懂得儀器的日常維護(hù)和對(duì)主要技術(shù)指標(biāo)的簡(jiǎn)易測(cè)試方法，自己經(jīng)常對(duì)儀器進(jìn)行維護(hù)和測(cè)試，上海紫外可見(jiàn)分光光度計(jì)選擇，以保證儀器工作在良好狀態(tài)，上海紫外可見(jiàn)分光光度計(jì)選擇。因?yàn)樵黾恿藴y(cè)量的速度，所以雙光束分光光度計(jì)在測(cè)量一些溶液隨時(shí)間動(dòng)態(tài)變化的研究中大有用處。上海紫外可見(jiàn)分光光度計(jì)選擇</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海紫外可見(jiàn)分光光度計(jì)選擇,紫外可見(jiàn)分光光度計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396592216930546/1658567.png"></div><p>光源和檢測(cè)方法（LIGHTSOURCESANDDETECTION）分光光度計(jì)的光譜也是需要考慮的一個(gè)重要因素。實(shí)驗(yàn)室研究人員希望省錢(qián)購(gòu)入專(zhuān)門(mén)儀器定量核酸、蛋白或者細(xì)菌的生長(zhǎng)情況。例如AmershamBiosciencesofPiscataway公司的GeneQuantII能在230、260、280、320、595和600nm的波長(zhǎng)下測(cè)量樣品。果果需要更大的靈活性，研究者可以考慮一種更高性能的寬光譜儀器，可以程序性地進(jìn)行ELISAs分析和比色分析。</p><p>紫外分光光度計(jì)一般覆蓋190nm和380nm波長(zhǎng)，通常利用氘燈照明。一些特殊的儀器可以提供滿(mǎn)足光子學(xué)和半導(dǎo)體研究需要的光譜范圍。VarianofPaloAlto公司的CaryDeepUV和HitachiHighTechnologiesofTokyo的U-7000AutomatedVacuumUVSystem就是這樣的儀器。</p><p>一些儀器具有多種光源供選擇：紫外光、可見(jiàn)光和甚至紅外光（780nm至3,000nm）。鎢燈和鹵素?zé)粢话阒桓采w可見(jiàn)光部分（大約380nm到800nm）。而氙燈則可以覆蓋紫外光和可見(jiàn)光區(qū)域。安徽紫外可見(jiàn)分光光度計(jì)使用紫外分光光度計(jì)應(yīng)具備四季恒濕的儀器室，配置恒溫設(shè)備，特別是地處南方地區(qū)的實(shí)驗(yàn)室。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海紫外可見(jiàn)分光光度計(jì)選擇,紫外可見(jiàn)分光光度計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396593893024301/8360761.png"></div><p> 752N紫外可見(jiàn)分光光度計(jì)產(chǎn)品介紹 </p> <p> 該產(chǎn)品采用微處理機(jī)控制技術(shù)在紫外可見(jiàn)光譜區(qū)域內(nèi)對(duì)物質(zhì)作定性、定量分析，是常規(guī)實(shí)驗(yàn)室必備的多用途分析儀器。 </p> <p> 主要特點(diǎn)： </p> <p> ●全息閃耀光柵單色器，具有波長(zhǎng)精度高，單色性好，雜散光低等優(yōu)點(diǎn)。 </p> <p> ●全新液晶屏顯示，讀數(shù)清晰自然。 </p> <p> ●采用微機(jī)測(cè)量系統(tǒng)，T-A轉(zhuǎn)換精度高，并有自動(dòng)調(diào)0％T和調(diào)100％T，濃度因子設(shè)定、濃度直讀。 </p> <p> ●測(cè)量讀數(shù)準(zhǔn)確性高，重現(xiàn)性好和穩(wěn)定性佳。 </p> <p> ●自動(dòng)光門(mén)技術(shù)，操作便捷。 </p> <p> 選配： </p> <p> ●熱敏繪圖打印機(jī) </p> <p> ●**光譜軟件 </p> <p> ●5cm或10cm比色皿架 </p><p style="text-indent:25px"><p>紫外可見(jiàn)分光光度計(jì)定量、定性分析需注意的問(wèn)題<p>重復(fù)測(cè)定次數(shù)和波長(zhǎng)掃描速度：對(duì)吸光度不是很大的樣品，或者狹縫不是很小，這是檢測(cè)器檢測(cè)的光信號(hào)的強(qiáng)度是比較大的，重復(fù)性較好，可選擇較少的重復(fù)次數(shù)。相反，如果樣品吸光度很大，狹縫很小，選擇較大的重復(fù)次數(shù)可獲得更好的結(jié)果。5測(cè)定波長(zhǎng)間隔：在掃描光譜時(shí)需要選擇，可根據(jù)樣品吸收峰的寬度進(jìn)行選擇，峰寬較大時(shí)，可選擇較大的波長(zhǎng)間隔。反之亦反。通常每個(gè)正常的吸收峰應(yīng)該用不少于30個(gè)數(shù)據(jù)點(diǎn)表示出來(lái)。一般來(lái)說(shuō)，紫外光分光光度計(jì)分為單光束和雙光束兩類(lèi)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="上海紫外可見(jiàn)分光光度計(jì)選擇,紫外可見(jiàn)分光光度計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396593808795839/2949755.png"></div><p> 色譜技術(shù)比它起步晚了二百多年，但如今的色譜儀器（氣相、液相、氣質(zhì)、液質(zhì)）占了分析界的大半壁江山。相較璀璨如星的各類(lèi)的色譜儀器，紫外-可見(jiàn)分光光度計(jì)黯然了很多。 </p> <p> 紫外-可見(jiàn)分光光度計(jì)可以被更精確更高級(jí)的檢測(cè)手段所取代？可以退出“分析史”的舞臺(tái)？ </p> <p> NO！NO！NO！ </p> <p> 事實(shí)上紫外-可見(jiàn)分光光度計(jì)（下文簡(jiǎn)稱(chēng)紫外分光光度計(jì)），依然是“分析舞臺(tái)”的美玉，低調(diào)有內(nèi)涵，親民有價(jià)值。一起來(lái)發(fā)現(xiàn)它在日化產(chǎn)品分析中的美和價(jià)值吧。原理分子的紫外可見(jiàn)吸收光譜是由于分子中的某些基團(tuán)吸收了紫外可見(jiàn)輻射光后，發(fā)生了電子能級(jí)躍遷而產(chǎn)生的吸收光譜。由于各種物質(zhì)具有各自不同的分子、原子和分子空間結(jié)構(gòu)，其吸收光能量的情況也就不會(huì)相同，因此，每種物質(zhì)都有其特有的、固定的吸收光譜曲線，可根據(jù)吸收光譜上某些特征波長(zhǎng)處吸光度的高低判別或測(cè)定該物質(zhì)的含量，這就是分光光度定性和定量分析的基礎(chǔ)。在操作紫外可見(jiàn)分光光度計(jì)時(shí)，操作人員需要留意一下機(jī)器的干燥劑。上海紫外可見(jiàn)分光光度計(jì)選擇</p><p style="text-indent:25px">分光光度計(jì)是杜包斯克(Duboscq)和奈斯勒(Nessler)等人在1854年將朗伯-比爾定律應(yīng)用于定量分析化學(xué)領(lǐng)域。上海紫外可見(jiàn)分光光度計(jì)選擇</p><p style="text-indent:25px">使用紫外可見(jiàn)分光光度計(jì)進(jìn)行定量和定性分析需注意以下一些問(wèn)題：1吸光度讀數(shù)范圍：吸光度測(cè)量誤差在透過(guò)率過(guò)大或過(guò)小時(shí)都會(huì)變大，為了滿(mǎn)足定量分析的誤差要求（<5%），在定量分析時(shí)要求吸光度應(yīng)在一定的范圍內(nèi)，這個(gè)范圍的具體值與儀器性能有關(guān)，主要是與紫外可見(jiàn)分光光度計(jì)檢測(cè)系統(tǒng)噪聲大小有關(guān)，但通常都在0.1~1.0范圍內(nèi)，如果儀器的檔次更低，則范圍更窄。根據(jù)朗伯比爾定律，影響吸光度大小的因素主要是樣品摩爾吸光系數(shù)，濃度和比色皿光程。實(shí)驗(yàn)中吸光度過(guò)大的樣品可通過(guò)稀釋樣品使吸光度到所需范圍內(nèi)。如果樣品不能稀釋?zhuān)梢愿挠霉獬梯^小的比色皿減小吸光度。吸光度過(guò)小的樣品可使用光程較大的比色皿以增大吸光度。上海紫外可見(jiàn)分光光度計(jì)選擇</p><p style="text-indent:25px">上海儀電分析儀器有限公司位于徐塘路88號(hào)7幢4層、9幢，交通便利，環(huán)境優(yōu)美，是一家生產(chǎn)型企業(yè)。公司是一家有限責(zé)任公司企業(yè)，以誠(chéng)信務(wù)實(shí)的創(chuàng)業(yè)精神、專(zhuān)業(yè)的管理團(tuán)隊(duì)、踏實(shí)的職工隊(duì)伍，努力為廣大用戶(hù)提供高品質(zhì)的產(chǎn)品。公司始終堅(jiān)持客戶(hù)需求優(yōu)先的原則，致力于提供高質(zhì)量的分光光度計(jì)，氣相色譜，原子吸收，食品安全。儀電分析將以真誠(chéng)的服務(wù)、創(chuàng)新的理念、高品質(zhì)的產(chǎn)品，為彼此贏得全新的未來(lái)！</p></p><br /><p>文章來(lái)源地址: http://m.cdcfah.com/cp/1811431.html</p></div></div></div></div></div><div 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