國(guó)內(nèi)**紫外可見分光光度計(jì)怎么樣服務(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)【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="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的色譜儀器，紫外-可見分光光度計(jì)黯然了很多。紫外-可見分光光度計(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)？"><meta name="keywords" content="國(guó)內(nèi)**紫外可見分光光度計(jì)怎么樣,紫外可見分光光度計(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"> <meta name="baidu-site-verification" content="OBVzrC9aaQ" /> <meta 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src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396594874577336/8128483.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="vzxlzf7" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396594874577336/8128483.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="przxd9x" 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>國(guó)內(nèi)**紫外可見分光光度計(jì)怎么樣,紫外可見分光光度計(jì)</p><p><span>***更新：</span>2020-10-30 18:53:24</p><p><span id="click" >瀏覽次數(shù)：8次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="hlrznrn" 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="77rhx9f" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="rnlbzfd" class="box"><p><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的色譜儀器，紫外-可見分光光度計(jì)黯然了很多。 </p> <p> 紫外-可見分光光度計(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，國(guó)內(nèi)**紫外可見分光光度計(jì)怎么樣！NO！ </p> <p> 事實(shí)上紫外-可見分光光度計(jì)（下文簡(jiǎn)稱紫外分光光度計(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吸收光譜是由于分子中的某些基團(tuán)吸收了紫外可見輻射光后，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)，國(guó)內(nèi)**紫外可見分光光度計(jì)怎么樣，國(guó)內(nèi)**紫外可見分光光度計(jì)怎么樣。在選擇紫外可見分光光度計(jì)之前，需要了解儀器的基礎(chǔ)構(gòu)架，有哪些地方是消耗品，有想哪些需要維修保養(yǎng)。國(guó)內(nèi)**紫外可見分光光度計(jì)怎么樣</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="國(guó)內(nèi)**紫外可見分光光度計(jì)怎么樣,紫外可見分光光度計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396594874577336/8128483.png"></div><p> 如何正確使用752N紫外可見分光光度計(jì) </p> <p> A：在使用紫外可見分光光度計(jì)時(shí)候，設(shè)備儀器使用之前，一定需要能夠把樣品室內(nèi)存放的防潮劑給拿出來，且在設(shè)備正常運(yùn)轉(zhuǎn)檢查時(shí)候也不能開啟樣品室蓋；在檢查時(shí)候需注意比色皿當(dāng)中的液體要能占總體積的百分之六十六到百分之八十比較好，千萬不能讓液體太多以至于液體外泄直接腐蝕儀器設(shè)備。 </p> <p> 當(dāng)然在進(jìn)行正常檢測(cè)時(shí)候，也要能確保比色皿干凈，當(dāng)發(fā)現(xiàn)內(nèi)壁上有液滴就許使用專業(yè)的紙張給擦拭干凈，建議大家千萬不要使用手直接擦拭，以免造成對(duì)手的傷害。 </p> <p> B：在使用紫外可見分光光度計(jì)時(shí)，儀器設(shè)備在正常運(yùn)轉(zhuǎn)的時(shí)候，一定要嚴(yán)禁把液體溶劑給直接放置于儀器的表層上，如果發(fā)現(xiàn)有溶劑液體出現(xiàn)外泄的情況，一定要進(jìn)行及時(shí)的清潔和處理。 </p> <p> C：當(dāng)使用紫外可見分光光度計(jì)檢測(cè)完畢后，還需要能夠及時(shí)把比色皿內(nèi)的液體給妥善處理掉，并還需要能夠使用蒸餾水給徹底清潔干凈，同時(shí)將比色皿進(jìn)行倒置晾干處理；全部工作完成后還需把設(shè)備儀器電源給關(guān)閉，再將防潮劑放入到樣品室內(nèi)并做好防塵處理才好。甲醇紫外可見分光光度計(jì)單價(jià)紫外可見分光光度計(jì)在開機(jī)前將樣品室內(nèi)的干燥劑取出，儀器自檢過程中禁止打開樣品室蓋。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="國(guó)內(nèi)**紫外可見分光光度計(jì)怎么樣,紫外可見分光光度計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396592155319523/9592810.png"></div><p> 原子吸收分光光度計(jì)與紫外可見分光光度計(jì)的區(qū)別介紹 </p> <p> 原理： </p> <p> 原子吸收觀察的是構(gòu)成物質(zhì)的元素（原子）中的電子在原子軌道中的躍遷，屬于原子吸收. </p> <p> 紫外可見光吸收觀察的是構(gòu)成物質(zhì)的分子中的電子在分子軌道中的躍遷，屬于分子吸收. </p> <p> 能量: </p> <p> 兩者有所同，又有所不同。定量分析的原則同，而測(cè)量所需的光能量不同： </p> <p> 原子吸收為X射線，能量大，可激發(fā)電子從低的原子軌道向高的原子軌道躍遷. </p> <p> 紫外可見吸收為紫外光及可見光，能量小，只能激發(fā)電子從分子軌道向MAX低（或次低）的空的分子軌道躍遷。 </p> <p> 通俗的說，原子吸收分光光度計(jì)是用較高的溫度來燃燒分子，使之原子化（變?yōu)榛鶓B(tài)原子），再通過特征輻射，把基態(tài)原子激發(fā)，并吸收能量，通過這個(gè)能量差（透過率）來計(jì)算出濃度。而紫外—可見分光光度計(jì)是通過顯色劑（一種能和我們被測(cè)元素產(chǎn)生絡(luò)合反應(yīng)的分子），與我們的被測(cè)元素產(chǎn)生反應(yīng)，并且反應(yīng)物分子帶有特定的顏色，經(jīng)過分子吸收氘燈（紫外區(qū)）或鎢燈（可見區(qū)）的照射，吸收燈發(fā)射的能量，通過能量差（透過率）來計(jì)算出濃度。 </p><p style="text-indent:25px"><p>綜合評(píng)價(jià)紫外可見光分光光度計(jì)儀器：根據(jù)使用領(lǐng)域進(jìn)行初步篩選，科研、制藥領(lǐng)域注重選擇光譜可調(diào)的紫外可見光分光光度計(jì)。其中，制藥中藥檢儀器要符合藥典規(guī)定，光譜帶寬要求為2nm以下。<p>重要性能指標(biāo)的考察，包括：光度準(zhǔn)確度，雜散光，光譜帶寬，穩(wěn)定性，噪聲，波長(zhǎng)的準(zhǔn)確度和重復(fù)性是幾個(gè)重要指標(biāo)。各指標(biāo)間相互**有相互影響，需要綜合考量選購目標(biāo)紫外可見光分光光度計(jì)。<p>使用前，閱讀儀器使用說明書和做好儀器使用前的工程師培訓(xùn)。使用過程中，正確操作、認(rèn)真了解儀器指標(biāo)的物理意義和測(cè)試方法以及結(jié)合儀器使用中的相關(guān)設(shè)備的調(diào)試。掌握儀器的基本保養(yǎng)維護(hù)知識(shí)，建立相關(guān)指標(biāo)與分析測(cè)試結(jié)果之間的誤差影響條件，經(jīng)常檢測(cè)和調(diào)試儀器，確保儀器處在合適的工作狀態(tài)。紫外分光光度計(jì)可用于藥品的鑒別、純度檢查及含量測(cè)定，既可以定性分析，又可以定量分析。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="國(guó)內(nèi)**紫外可見分光光度計(jì)怎么樣,紫外可見分光光度計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396592124342670/5540999.png"></div><p> 紫外分光光度計(jì)的單色器是將光源發(fā)出的連續(xù)光譜分解成單色光，并能準(zhǔn)確方便地“取出”所需要的某一波長(zhǎng)的光的光學(xué)裝置，它是光度計(jì)的心臟。單色器主要由狹縫、色散元件和透鏡系統(tǒng)組成。其中色散元件是單色器的主要部件。常用的色散元件是棱鏡、光柵，或者是兩者的組合。 </p> <p> 棱鏡單色器是利用不同波長(zhǎng)的光在棱鏡內(nèi)折射率不同將復(fù)合光色散為單色光，這種現(xiàn)象稱為棱鏡的色散作用。常用的棱鏡由玻璃或石英制成。可見光范圍常采用玻璃棱鏡，其色散力強(qiáng)，價(jià)格低廉，但是玻璃吸收紫外光，所以不宜用于紫外光區(qū)。紫外光范圍常用石英作為材料，石英棱鏡的工作波長(zhǎng)范圍為185~4000nm，在紫外光區(qū)有較好的分辨力，而且也適用于可見光區(qū)和近紅外光區(qū)。棱鏡單色器的特點(diǎn)是波長(zhǎng)越短，色散程度越好。越趨向長(zhǎng)波，色散程度越差，所以，單色器用棱鏡的分光光度計(jì)，其波長(zhǎng)刻度在紫外光區(qū)可達(dá)到0.2nm，而在長(zhǎng)波段，只能達(dá)到5nm。在操作紫外可見分光光度計(jì)時(shí)，操作人員需要留意一下機(jī)器的干燥劑。甲醛紫外可見分光光度計(jì)代理</p><p style="text-indent:25px">光學(xué)構(gòu)造和光源、探測(cè)方法、樣品類型和數(shù)據(jù)處理等都是要考慮的因素。國(guó)內(nèi)**紫外可見分光光度計(jì)怎么樣</p><p> 紫外分光光度計(jì)做不準(zhǔn)？比色皿出錯(cuò)了唄。一文了解比色皿的正確使用，配對(duì)，洗滌。 </p> <p> 比色皿（cuvette）是一種用于光譜分析的裝備儀器。常用的主要是由石英粉燒制的石英比色皿和普通硅酸鹽光學(xué)玻璃制成的透光面比色皿。 </p> <p> 當(dāng)然也有微量、半微量、熒光等比色皿出現(xiàn)。 </p> <p> 石英比色皿（Q/S）：適用波長(zhǎng)范圍在190nm-2500nm（適用于紫外、可見、近紅外光區(qū)）價(jià)格較玻璃比色皿較貴 </p> <p> 玻璃比色皿（G）：適用波長(zhǎng)范圍320nm-2500nm（不適用于紫外光區(qū)），價(jià)格相對(duì)便宜 </p> <p> 由上述數(shù)據(jù)可以看出石英比色皿完全可以代替玻璃比色皿使用，如果不用紫外區(qū)的話，用普通玻璃比色皿就行了，一則浪費(fèi)沒必要，二則，嘿嘿，摔碎了也不心疼。至于微量、半微量、熒光等比色皿不常用就不在說了。國(guó)內(nèi)**紫外可見分光光度計(jì)怎么樣</p><p style="text-indent:25px">上海儀電分析儀器有限公司辦公設(shè)施齊全，辦公環(huán)境優(yōu)越，為員工打造良好的辦公環(huán)境。儀電分析,上分是上海儀電分析儀器有限公司的主營(yíng)品牌，是專業(yè)的儀器儀表、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)】公司，擁有自己**的技術(shù)體系。公司以用心服務(wù)為重點(diǎn)價(jià)值，希望通過我們的專業(yè)水平和不懈努力，將儀器儀表、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)】等業(yè)務(wù)進(jìn)行到底。自公司成立以來，一直秉承“以質(zhì)量求生存，以信譽(yù)求發(fā)展”的經(jīng)營(yíng)理念，始終堅(jiān)持以客戶的需求和滿意為重點(diǎn)，為客戶提供良好的分光光度計(jì)，氣相色譜，原子吸收，食品安全，從而使公司不斷發(fā)展壯大。</p></p><br 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