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href="http://www.cdcfah.com/cp/third-fenxiyiqi_zwfxy/">紫外分析儀</a>?元素紫外可見分光光度計誠信互利上海儀電分析儀器供應(yīng)</p><div id="u2um2t2" class="leftbox clearfix"><h1>元素紫外可見分光光度計誠信互利上海儀電分析儀器供應(yīng)</h1><div id="ed7224w" class="proBig"><div id="dho2sfg" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396594919157259/9098588.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="7nzbsj3" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396594919157259/9098588.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="eszw87x" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</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>元素紫外可見分光光度計,紫外可見分光光度計</p><p><span>***更新：</span>2020-12-23 03:13:59</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="8tfhyfw" 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: </span>021-34530361</p><p><span>地址: </span>徐塘路88號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="8c8pqxz" class="page-proshow02"><p class="title">詳細說明</p><div id="22e2ikr" class="box"><p><p> 對于紫外可見分光光度計，由于有雙光源(鎢燈與氘燈)，為了延長燈的使用壽命，開機自檢完成后可以關(guān)掉測定時不用的光源燈。紫外可見分光光度計使用中常見問題解析在一般分光光度計的使用說明書上，要求儀器預(yù)熱時間約20分鐘；若是帶微處理器的分光光度計，開機后儀器自動進入自檢(初始化)狀態(tài)，約需1O分鐘左右。在分光光度計預(yù)熱這個環(huán)節(jié)上，很多使用者或多或少存在問題，如開機只預(yù)熱電路系統(tǒng)(不調(diào)節(jié)波長、打開吸收池暗箱蓋預(yù)熱等)或認為初始化過程就是預(yù)熱等等，元素紫外可見分光光度計。對帶微處理器有自檢功能的分光光度計，開機后儀器自檢(初始化)結(jié)束后，在測定窗口上，設(shè)置所需波長值，用一個吸收池裝上純凈水置于光路上，元素紫外可見分光光度計，調(diào)“0000A”后，預(yù)熱儀器，元素紫外可見分光光度計，當(dāng)儀器顯示讀數(shù)不再變化后即可進行測定。 </p> <p> <br /> 因為增加了測量的速度，所以雙光束分光光度計在測量一些溶液隨時間動態(tài)變化的研究中大有用處。元素紫外可見分光光度計</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="元素紫外可見分光光度計,紫外可見分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396594919157259/9098588.png"></div><p> 吸收池是用于盛裝待測液并決定待測溶液透光液層厚度的器皿，又稱比色皿。吸收池一般為長方體，也有圓形或其它形狀的。其底及兩側(cè)為毛玻璃，另兩面為光學(xué)透光面。根據(jù)光學(xué)透光面的材質(zhì)，吸收池又可分為玻璃吸收池和石英吸收池兩種。玻璃吸收池用于可見光區(qū)測定，石英吸收池用于紫外光區(qū)的測定。吸收池的規(guī)格以光程為標志。常用的吸收池規(guī)格有0.5cm、1.0cm、2.0cm、3.0cm、5.0cm等。光柵實現(xiàn)上就是一系列等寬、等距離的平行狹縫，它是利用光的衍射與干涉作用制成的。光柵作為色散元件具有不少獨特的優(yōu)點，光柵單色器的分辨率比棱鏡單色器的分辨率高，可精確到0.2nm，而且可用的波長范圍也比棱鏡單色器的范圍寬。所以，目前生產(chǎn)的紫外可見分光光度計大多采用光柵作為色散元件。工業(yè)紫外可見分光光度計報價光學(xué)構(gòu)造和光源、探測方法、樣品類型和數(shù)據(jù)處理等都是要考慮的因素。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="元素紫外可見分光光度計,紫外可見分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396592124342670/5540999.png"></div><p style="text-indent:25px">玻璃吸收池用于可見光區(qū)測定，石英吸收池用于紫外光區(qū)的測定。吸收池的規(guī)格以光程為標志。常用的吸收池規(guī)格有0.5cm、1.0cm、2.0cm、3.0cm、5.0cm等。光柵實現(xiàn)上就是一系列等寬、等距離的平行狹縫，它是利用光的衍射與干涉作用制成的。光柵作為色散元件具有不少獨特的優(yōu)點，光柵單色器的分辨率比棱鏡單色器的分辨率高，可精確到0.2nm，而且可用的波長范圍也比棱鏡單色器的范圍寬。所以，目前生產(chǎn)的紫外可見分光光度計大多采用光柵作為色散元件。吸收池是用于盛裝待測液并決定待測溶液透光液層厚度的器皿，又稱比色皿。吸收池一般為長方體，也有圓形或其它形狀的。其底及兩側(cè)為毛玻璃，另兩面為光學(xué)透光面。根據(jù)光學(xué)透光面的材質(zhì)，吸收池又可分為玻璃吸收池和石英吸收池兩種。</p><p> 紫外分光光度計--注意事項 </p> <p> 1．該儀器應(yīng)放在干燥的房間內(nèi)，使用時放置在堅固平穩(wěn)的工作臺上，室內(nèi)照明不宜太強。熱天時不能用電扇直接向儀器吹風(fēng)，防止燈泡燈絲發(fā)亮不穩(wěn)定。 </p> <p> 2．使用本儀器前，使用者應(yīng)該首先了解本儀器的結(jié)構(gòu)和工作原理，以及各個操縱旋鈕之功能。在未按通電源之前，應(yīng)該對儀器的安全性能進行檢查，電源接線應(yīng)牢固，通電也要良好，各個調(diào)節(jié)旋鈕的起始位置應(yīng)該正確，然后再按通電源開關(guān)。 </p> <p> 3．在儀器尚未接通電源時，電表指針必須于“0”刻線上，若不是這種情況，則可以用電表上的校正螺絲進行調(diào)節(jié)。紫外可見吸收光譜是由于分子中的某些基團吸收了紫外可見輻射光后，發(fā)生了電子能級躍遷而產(chǎn)生的吸收光譜。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="元素紫外可見分光光度計,紫外可見分光光度計" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396593091764635/4502162.png"></div><p> 原子吸收分光光度計（AAS）：分析定量金屬原子（除冷原子），利用高溫使原子獲得能量變?yōu)榧ぐl(fā)態(tài)，當(dāng)原子回歸到基態(tài)時用相應(yīng)的我陰極燈照射來檢測含量。主要分火焰法、石墨爐法和氫化物發(fā)生器法。 </p> <p> 紅外：紅外分近紅外、中紅外和遠紅外三種儀器。 </p> <p> 近紅外：用來定性不對稱的官能團，從而定性某種化學(xué)物質(zhì)。紅外的原理是紅外光所產(chǎn)生高能給予分子，分子產(chǎn)生震動，從振幅來檢測官能團。所以，不對稱，是前提。對稱了就看不出振幅了。一般多為手持式。 </p> <p> 中紅外：俗稱的紅外，用來定性或定量不對稱官能團，從而定性或定量某種化學(xué)物質(zhì)。相比于近紅外增加了可以定量的技能！尤其是對同分異構(gòu)體的定量由為明顯！原理還是震動。沒有手持式。 </p> <p> 遠紅外：實驗室一般沒有。金屬離子常與有機物形成絡(luò)合物，多數(shù)絡(luò)合物在紫外可見區(qū)是有吸收的，我們可以利用分光光度法來研究其組成。民用紫外可見分光光度計廠家</p><p style="text-indent:25px">自從60年前紫外分光光度計出現(xiàn)在實驗室的工作臺之后，已經(jīng)形成了一種能解決大多數(shù)難題的儀器。元素紫外可見分光光度計</p><p> 雙光束型則是通過一個斬光輪（mirroredchopperwheel）將一束光分成兩束，分別測量對照樣品和實際樣品?？蒑IN光漂移（lampdrift）和減少測量時間。一些雙光型光度計不利用斬光輪，而是利用一種光束分光器來代替，將一束光分成兩束平行的光然后同時測量對照樣品和目的樣品。因為增加了測量的速度，所以雙光束分光光度計在測量一些溶液隨時間動態(tài)變化的研究中大有用處。光學(xué)構(gòu)造（OPTICALCONFIGURATION）一般來說，紫外光分光光度計分為單光束和雙光束兩類。顧名思義，單光束型主要是依賴單束光進行測量。一束給定波長的光通過對照物，然后再通過實際樣品溶液，就能得到吸光結(jié)果。元素紫外可見分光光度計</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，計算機軟件開發(fā)及銷售，從事貨物進出口及技術(shù)進出口業(yè)務(wù)。【依法須經(jīng)批準的項目，經(jīng)相關(guān)部門批準后方可開展經(jīng)營活動】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，計算機軟件開發(fā)及銷售，從事貨物進出口及技術(shù)進出口業(yè)務(wù)?！疽婪毥?jīng)批準的項目，經(jīng)相關(guān)部門批準后方可開展經(jīng)營活動】的公司，是一家集研發(fā)、設(shè)計、生產(chǎn)和銷售為一體的專業(yè)化公司。公司自創(chuàng)立以來，投身于分光光度計，氣相色譜，原子吸收，食品安全，是儀器儀表的主力軍。儀電分析繼續(xù)堅定不移地走高質(zhì)量發(fā)展道路，既要實現(xiàn)基本面穩(wěn)定增長，又要聚焦關(guān)鍵領(lǐng)域，實現(xiàn)轉(zhuǎn)型再突破。儀電分析創(chuàng)始人湯志東，始終關(guān)注客戶，創(chuàng)新科技，竭誠為客戶提供良好的服務(wù)。</p></p><br /><p>文章來源地址: 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