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clearfix"><h1>學(xué)校紫外可見(jiàn)分光光度計(jì)性價(jià)比鑄造輝煌上海儀電分析儀器供應(yīng)</h1><div id="rah2bda" class="proBig"><div id="u8mbq23" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396594849245086/5585171.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="rkrt3pz" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396594849245086/5585171.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="lkhjyhi" 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>學(xué)校紫外可見(jiàn)分光光度計(jì)性價(jià)比,紫外可見(jiàn)分光光度計(jì)</p><p><span>***更新：</span>2020-11-08 03:18:03</p><p><span id="click" >瀏覽次數(shù)：5次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="cqvsk3c" 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="aur7nax" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="hgifcbi" class="box"><p><p> 當(dāng)你什么都不了解的情況下，只選貴的，準(zhǔn)沒(méi)錯(cuò)。在某種程度上，這句話具有一定的適用性。但是，新型儀器一般價(jià)格較貴，如果過(guò)度放寬儀器預(yù)算，而追加經(jīng)費(fèi)采購(gòu)不需要的配件也是一種浪費(fèi)。如何快速簡(jiǎn)單的掌握紫外可見(jiàn)分光光度計(jì)的特性，從而進(jìn)行合適的采購(gòu)定位，小編將所需要的知識(shí)點(diǎn)總結(jié)如下。 </p> <p> 認(rèn)識(shí)紫外可見(jiàn)光分光光度計(jì)使用范圍，學(xué)校紫外可見(jiàn)分光光度計(jì)性價(jià)比。任何一臺(tái)儀器都不是解決所有問(wèn)題的同一把鑰匙。多問(wèn)自己幾個(gè)問(wèn)題：需要一臺(tái)什么樣的儀器，要用它來(lái)做什么，分析的樣品的形態(tài)、所需要的測(cè)試范圍以及精度要求在哪里等等。理清楚這些，儀器的基本輪廓就畫出來(lái)了。 </p> <p> 紫外可見(jiàn)光分光光度計(jì)作為一種常規(guī)的實(shí)驗(yàn)室分析儀器，可以常用于無(wú)機(jī)物、有機(jī)物的定性定量分析，所使用的科研領(lǐng)域包括：科研、制藥，學(xué)校紫外可見(jiàn)分光光度計(jì)性價(jià)比、化工、環(huán)保、衛(wèi)生等需要分析的關(guān)鍵領(lǐng)域，學(xué)校紫外可見(jiàn)分光光度計(jì)性價(jià)比。紫外分光光度計(jì)的光柵是一系列等寬、等距離的平行狹縫，以光的衍射現(xiàn)象和干涉現(xiàn)象為基礎(chǔ)。學(xué)校紫外可見(jiàn)分光光度計(jì)性價(jià)比</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="學(xué)校紫外可見(jiàn)分光光度計(jì)性價(jià)比,紫外可見(jiàn)分光光度計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396594849245086/5585171.png"></div><p> 什么是紫外可見(jiàn)分光光度計(jì)？紫外可見(jiàn)分光光度計(jì)是一類很重要的分析儀器，無(wú)論在物理學(xué)、化學(xué)、生物學(xué)、醫(yī)學(xué)、材料學(xué)、環(huán)境科學(xué)等科學(xué)研究領(lǐng)域，還是在化工、醫(yī)藥、環(huán)境檢測(cè)、冶金等現(xiàn)代化生產(chǎn)與管理部門，紫外可見(jiàn)分光光度計(jì)都有重要的應(yīng)用。 </p> <p> 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(Lambert-Beer)定律應(yīng)用于定量分析化學(xué)領(lǐng)域，并且設(shè)計(jì)了第1臺(tái)比色計(jì)。到1918年，美國(guó)國(guó)家標(biāo)準(zhǔn)局制成了第1臺(tái)紫外可見(jiàn)分光光度計(jì)。此后，紫外可見(jiàn)分光光度計(jì)經(jīng)不斷改進(jìn)，又出現(xiàn)自動(dòng)記錄、自動(dòng)打印、數(shù)字顯示、微機(jī)控制等各種類型的儀器，使光度法的靈敏度和準(zhǔn)確度也不斷提高，其應(yīng)用范圍也不斷擴(kuò)大。紫外可見(jiàn)分光光度法從問(wèn)世以來(lái)，在應(yīng)用方面有了很大的發(fā)展，尤其是在相關(guān)學(xué)科發(fā)展的基礎(chǔ)上，促使分光光度計(jì)儀器的不斷創(chuàng)新，功能更加齊全，使得光度法的應(yīng)用更拓寬了范圍。目前，分光光度法已為工農(nóng)業(yè)各個(gè)部門和科學(xué)研究的各個(gè)領(lǐng)域所采用，成為人們從事生產(chǎn)和科研的有力測(cè)試手段。目前市場(chǎng)上有兩類主流產(chǎn)品:掃描光柵式分光光度計(jì)和固定光柵式分光光度計(jì)。 </p> <p> <br /> 高校紫外可見(jiàn)分光光度計(jì)賣價(jià)紫外可見(jiàn)光分光光度計(jì)是使用紫外光譜特點(diǎn)而設(shè)計(jì)制造的光學(xué)儀器。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="學(xué)校紫外可見(jiàn)分光光度計(jì)性價(jià)比,紫外可見(jiàn)分光光度計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396594919157259/9098588.png"></div><p> 光柵實(shí)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(dú)特的優(yōu)點(diǎn)，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(zhǎng)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(jiàn)分光光度計(jì)大多采用光柵作為色散元件。 </p> <p> 吸收池是用于盛裝待測(cè)液并決定待測(cè)溶液透光液層厚度的器皿，又稱比色皿。吸收池一般為長(zhǎng)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(jiàn)光區(qū)測(cè)定，石英吸收池用于紫外光區(qū)的測(cè)定。吸收池的規(guī)格以光程為標(biāo)志。常用的吸收池規(guī)格有0.5cm、1.0cm、2.0cm、3.0cm、5.0cm等。 </p>紫外可見(jiàn)分光光度計(jì)的基本結(jié)構(gòu) <p> 紫外可見(jiàn)分光光度計(jì)的工作原理是由光源發(fā)出連續(xù)輻射光，經(jīng)單色器按波長(zhǎng)大小色散為單色光，單色光照射到吸收池，一部分被樣品溶液吸收，未被吸收的光經(jīng)檢測(cè)器的光電管將光強(qiáng)度變化轉(zhuǎn)變?yōu)殡娦盘?hào)變化，并經(jīng)信號(hào)顯示系統(tǒng)調(diào)制放大后，顯示或打印出吸光度A（或透射比T），完成測(cè)定。 </p> <p> 一、光源 </p> <p> 光源是提供符合要求的入射光的裝置，紫外可見(jiàn)分光光度計(jì)可見(jiàn)光區(qū)常用的光源為鎢燈，紫外光區(qū)常用的光源為氫燈或氘燈。 </p> <p> 1.1．鎢燈 </p> <p> 鎢燈是常用的可見(jiàn)光光源，它可發(fā)射的波長(zhǎng)為325~2500nm的連續(xù)光譜，其中適宜的使用波長(zhǎng)范圍為320~1000nm，因此，也可用做近紅外光源。電能將鎢燈加熱到白熾時(shí)，發(fā)出的光強(qiáng)度在各波段的分布隨燈絲溫度而變化。燈絲的溫度取決于電源電壓。電源電壓的微小波動(dòng)都會(huì)引起鎢光強(qiáng)度的很大變化。因此必須使用穩(wěn)壓電源供電，鎢燈工作電壓為12V，也可以使用12V的直流電源供電。鎢燈的壽命一般可達(dá)10000小時(shí)以上。 </p> <p> 目前很多光度計(jì)采用鹵鎢燈代替鎢燈，如7230G型、752PLUS型分光光度計(jì)等。鹵鎢燈具有較高的發(fā)光效率和較長(zhǎng)的使用壽命。分光光度計(jì)的氘燈和汞燈是在不同波長(zhǎng)的時(shí)候有程序控制自動(dòng)變換的，一般是在360nm處變換。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="學(xué)校紫外可見(jiàn)分光光度計(jì)性價(jià)比,紫外可見(jiàn)分光光度計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396593980700101/5381945.png"></div><p> 紫外分光光度計(jì)--注意事項(xiàng) </p> <p> 1．該儀器應(yīng)放在干燥的房間內(nèi)，使用時(shí)放置在堅(jiān)固平穩(wěn)的工作臺(tái)上，室內(nèi)照明不宜太強(qiáng)。熱天時(shí)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(gè)操縱旋鈕之功能。在未按通電源之前，應(yīng)該對(duì)儀器的安全性能進(jìn)行檢查，電源接線應(yīng)牢固，通電也要良好，各個(gè)調(diào)節(jié)旋鈕的起始位置應(yīng)該正確，然后再按通電源開(kāi)關(guān)。 </p> <p> 3．在儀器尚未接通電源時(shí)，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(jìn)行調(diào)節(jié)。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。**紫外可見(jiàn)分光光度計(jì)廠家供應(yīng)</p><p style="text-indent:25px">紫外可見(jiàn)分光光度計(jì)基本工作原理和紅外光譜儀相似，利用一定頻率的紫外可見(jiàn)光照射被分析的有機(jī)物質(zhì)。學(xué)校紫外可見(jiàn)分光光度計(jì)性價(jià)比</p><p> 可見(jiàn)分光光度計(jì)是一種常規(guī)的實(shí)驗(yàn)室分析儀器?？沙Ｓ糜跓o(wú)機(jī)物、有機(jī)物的定性、定量分析中，在科研、制藥、化工、環(huán)保、衛(wèi)生、防疫等領(lǐng)域中發(fā)揮重要的作用。有人說(shuō)，紫外、可見(jiàn)分光光度計(jì)就是一把尺子一個(gè)天平，凡是有化驗(yàn)、分析的地方都能用到它。那么，如何評(píng)價(jià)一臺(tái)紫外、可見(jiàn)分光光度計(jì)的優(yōu)劣呢? </p> <p> 要考察它的外觀。試想，一臺(tái)外型呆板、做工粗糙的儀器，怎么可能是一臺(tái)先進(jìn)的儀器呢? </p> <p> 我們探討一下會(huì)對(duì)儀器的使用有很大影響的幾個(gè)重要指標(biāo) </p> <p> <p> 1、光度準(zhǔn)確度 </p> <p> 2、雜散光 </p> <p> 3、光譜帶寬 </p> <p> 4、穩(wěn)定性 </p> <p> 5、噪聲 </p> <p> 6、波長(zhǎng)的準(zhǔn)確度和重復(fù)性 </p> <p> <br /> </p> 學(xué)校紫外可見(jiàn)分光光度計(jì)性價(jià)比</p><p style="text-indent:25px">上海儀電分析儀器有限公司屬于儀器儀表的高新企業(yè)，技術(shù)力量雄厚。儀電分析是一家有限責(zé)任公司企業(yè)，一直“以人為本，服務(wù)于社會(huì)”的經(jīng)營(yíng)理念;“誠(chéng)守信譽(yù)，持續(xù)發(fā)展”的質(zhì)量方針。公司始終堅(jiān)持客戶需求優(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、***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://www.cdcfah.com/cp/1895283.html</p></div></div></div></div></div><div id="tcurtpr" class="page-right twoColRt"><div id="388wacj" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="uj73xzg" 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" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強(qiáng) 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