分光光度計(jì)按照光源種類分為哪幾類？ - 北京華儀通泰環(huán)?？萍加邢薰?/title> <meta name="keywords" content="分光光度計(jì)按照光源種類分為哪幾類" /> <meta name="description" content="分光光度計(jì)改變了原來的字符型的簡(jiǎn)單顯示方式，采用6.4英寸圖形式大屏幕液晶顯示器，增加了光譜掃描、定分析等功能，可實(shí)時(shí)記錄樣品的吸光度、透射比或濃度，可繪制樣品的光譜掃描曲線以及標(biāo)準(zhǔn)樣品的工作曲線，并可表顯示各種測(cè)試參數(shù)，如當(dāng)前波長(zhǎng)位置，儀器光能量，光源開關(guān)狀態(tài)和操作提示等各種信息。人性化的設(shè)計(jì)符合大多數(shù)用戶的操作習(xí)慣。" /> <link href="/Public/CSS/w/base.css" rel="stylesheet"> <link href="/Public/CSS/w/style.css" rel="stylesheet"> <script src="/Public/JS/w/config.js"></script> <script src="/Public/JS/w/jquery.min.js"></script> <script src="/Public/JS/w/common.js"></script> <script src="/Public/JS/w/jquery.SuperSlide.js"></script> <script src="/Public/JS/w/app.js"></script> <script type="text/javascript"> // GoMobile('http:///'); // var searchid = 5; </script> <script> var _hmt = _hmt || []; (function() { var hm = document.createElement("script"); hm.src = "https://#/hm.js?5e26f803acf2cb816999c86569a81ca1"; var s = 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style="text-indent: 2em; text-align: center;"><img src="/Public/Uploads/image/20201211/1607650136651582.png" title="1607650136651582.png" alt="分光光度計(jì)按照光源種類劃分為哪幾類.png"/></p><p>　　分光光度計(jì)按照光源種類劃分為：</p><p>　　(1)、傳統(tǒng)單光束UV紫外測(cè)試，測(cè)試過程全程封閉，單光束光源只通過光柵直接照射樣品，再經(jīng)光電倍增管檢測(cè)器檢測(cè)。測(cè)試空白樣品之后才能測(cè)試目標(biāo)樣品，全波段需要時(shí)間不超過2min;</p><p>　　(2)、比例雙光束UV，測(cè)試過程全封閉，單光束光源通過光柵，再經(jīng)棱鏡，分成2束UV，分別照射目標(biāo)樣品與空白樣品，再合并光進(jìn)入光電倍增管檢測(cè)器檢測(cè)，經(jīng)差減法得到結(jié)果。目標(biāo)樣品與空白樣品可以同時(shí)測(cè)量，測(cè)試靈敏度降低，全波段分析時(shí)間長(zhǎng)。</p><p>　　(3)、雙光束UV：與比例雙光束UV不同之處是通過棱鏡分出兩道光后，在分別通過光柵，各自分別進(jìn)入光點(diǎn)倍增管檢測(cè)器檢測(cè)。加強(qiáng)了靈敏度，同時(shí)保留同時(shí)測(cè)量空白樣品與目標(biāo)樣品的優(yōu)點(diǎn)，全波段分析時(shí)間長(zhǎng)。</p><p>　　(4)、全波段UV：樣品與空白樣品可以暴露在空氣中，照射樣品后，進(jìn)入密閉箱，通過光柵，進(jìn)入DAD檢測(cè)器檢測(cè)。檢測(cè)樣品不需要密閉，外界光線對(duì)測(cè)試無影響，使用方便準(zhǔn)確且空白只需要檢測(cè)一次，全波段分析時(shí)間小于1s。</p><p><br/></p> </div> </div> </div> </div> </div> <div id="i8pjzty" class="news-aggregate-sd"> <div id="i8pjzty" class="xwtji"> 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