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class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁(yè)?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_yiqiyibiao/">儀器儀表</a>?<a href="http://www.cdcfah.com/cp/second-yiqiyibiao_gxyq/">光學(xué)儀器</a>?<a href="http://www.cdcfah.com/cp/third-gxyq_gpygdj/">光譜儀、光度計(jì)</a>?手持紫外可見(jiàn)分光光度計(jì)生產(chǎn)廠家歡迎咨詢上海儀電分析儀器供應(yīng)</p><div id="kmnenwj" class="leftbox clearfix"><h1>手持紫外可見(jiàn)分光光度計(jì)生產(chǎn)廠家歡迎咨詢上海儀電分析儀器供應(yīng)</h1><div id="o3ofg9g" class="proBig"><div id="nlrdkdb" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396592155319523/9592810.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="ahnj2ga" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396592155319523/9592810.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="ovrm3i3" 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>手持紫外可見(jiàn)分光光度計(jì)生產(chǎn)廠家,紫外可見(jiàn)分光光度計(jì)</p><p><span>***更新：</span>2020-11-17 04:18:20</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="naghtmc" 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="ylcyuy8" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="mtfbnof" class="box"><p><p> 紫外可見(jiàn)分光光度計(jì)的發(fā)展分光光度法在分析領(lǐng)域中的應(yīng)用已經(jīng)有數(shù)十年的歷史，至今仍是應(yīng)用常用的分析方法之一。隨著分光元器件及分光技術(shù)、檢測(cè)器件與檢測(cè)技術(shù)、大規(guī)模集成制造技術(shù)等的發(fā)展，以及單片機(jī)、微處理器、計(jì)算機(jī)和DSP技術(shù)的應(yīng)用，分光光度計(jì)的性能指標(biāo)不斷提高，并向自動(dòng)化、智能化、高速化和小型化等方向發(fā)展。 </p> <p> 在分光元器件方面，經(jīng)歷了棱鏡、機(jī)刻光柵和全息光柵的過(guò)程，商品化的全息閃耀光柵已迅速取代一般刻劃光柵。在儀器控制方面，隨著單片機(jī)、微處理器的出現(xiàn)以及軟硬件技術(shù)的結(jié)合，從早期的人工控制進(jìn)步到了自動(dòng)控制。在顯示、記錄與繪圖方面，早期采用表頭(電位計(jì))指示、繪圖儀繪圖，后來(lái)用數(shù)字電壓表數(shù)字顯示，如今更多地采用液晶屏幕或計(jì)算機(jī)屏幕顯示。在檢測(cè)器方面，早期使用光電池、光電管，后來(lái)更普遍地使用光電倍增管甚至光電二極管陣列。陣列型檢測(cè)器和凹面光柵的聯(lián)合應(yīng)用，使儀器的測(cè)量速度發(fā)生了質(zhì)的飛躍，且性能更加穩(wěn)定可靠，受到儀器用戶的青睞，在儀器構(gòu)型方面，手持紫外可見(jiàn)分光光度計(jì)生產(chǎn)廠家，手持紫外可見(jiàn)分光光度計(jì)生產(chǎn)廠家，從單光束發(fā)展為雙光束，現(xiàn)在幾乎所有高級(jí)分光光度計(jì)都是雙光束的，手持紫外可見(jiàn)分光光度計(jì)生產(chǎn)廠家，有些高精度的儀器采用雙單色器。紫外分光光度計(jì)（UV Spectrophotometer）在實(shí)驗(yàn)室長(zhǎng)期在分析領(lǐng)域扮演很重要的角色。手持紫外可見(jiàn)分光光度計(jì)生產(chǎn)廠家</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="手持紫外可見(jiàn)分光光度計(jì)生產(chǎn)廠家,紫外可見(jiàn)分光光度計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396592155319523/9592810.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。手持紫外可見(jiàn)分光光度計(jì)生產(chǎn)廠家因?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。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="手持紫外可見(jiàn)分光光度計(jì)生產(chǎn)廠家,紫外可見(jiàn)分光光度計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396593980700101/5381945.png"></div><p> 進(jìn)行單波長(zhǎng)測(cè)量時(shí)，需要考慮朗伯比爾定律對(duì)入射光單色性的要求和測(cè)定靈敏度的要求。沒(méi)有干擾時(shí)，一般選擇在吸收峰的MAX吸收波長(zhǎng)位置處，如果有干擾，選擇在沒(méi)有干擾且吸光度變化較平緩的位置。進(jìn)行多波長(zhǎng)校正時(shí)，除盡量滿足單波長(zhǎng)測(cè)定的波長(zhǎng)要求外，還要求多個(gè)組分間的吸收光譜間線性無(wú)關(guān)。 </p> <p> 紫外分光光度計(jì)狹縫的大小會(huì)影響到儀器的信噪比和標(biāo)準(zhǔn)曲線的線性范圍。狹縫過(guò)大，通常會(huì)使線性范圍變小，特別是當(dāng)不在MAX吸收波長(zhǎng)位置測(cè)定時(shí)更是如此。狹縫過(guò)小，信噪比變差，基線平直度和測(cè)量數(shù)據(jù)的重復(fù)性會(huì)變差。此外，還需要考慮樣品吸收峰寬度的影響。通常單波長(zhǎng)測(cè)定時(shí)，一般選擇在MAX吸收波長(zhǎng)位置，線性范圍容易滿足，可選擇較寬的狹縫（1~2nm）多波長(zhǎng)測(cè)定時(shí)，很難同時(shí)在所有波長(zhǎng)都滿足線性范圍要求，應(yīng)選擇比較小的狹縫。 </p><p> 紫外可見(jiàn)分光光度計(jì)的比色皿的洗滌方法 </p> <p> 1分光光度法中比色皿潔凈與否是影響測(cè)定準(zhǔn)確度的因素之一。因此，必須重視選擇正確的洗凈方法。 </p> <p> 俺的經(jīng)驗(yàn)是：要是你測(cè)定溶液是酸，如果不干凈，就用弱堿溶液洗，要是你測(cè)定溶液是堿，如果不干凈，就用弱酸溶液洗，要是你測(cè)定溶液是有機(jī)物質(zhì)，如果不干凈，就用有機(jī)溶劑，比如酒精等溶液洗。 </p> <p> 2選擇比色皿洗滌液的原則是去污效果好，不損壞比色皿，同時(shí)又不影響測(cè)定。 </p> <p> 2.1分析常用的鉻酸洗液不宜用于洗滌比色皿，這是因?yàn)閹谋壬笤谠撓匆褐杏袝r(shí)會(huì)局部發(fā)熱，致使比色皿膠接面裂開而損壞。同時(shí)經(jīng)洗液洗滌后的比色皿還很可能殘存微量鉻，其在紫外區(qū)有吸收，因此會(huì)影響鉻及其他有關(guān)元素的測(cè)定。 </p> <p> 一般主張使用硝酸和過(guò)氧化氫(5：1)的混合溶液泡洗，然后用水沖洗干凈。對(duì)一般方法難以洗凈的比色皿，還可以采取以下兩種方法。 </p> <p> 2.2先將比色皿侵入含有少量陰離子表面活性劑的碳酸鈉(20克/升)溶液泡洗，經(jīng)水沖洗后，再于過(guò)氧化氫和硝酸(5：1)混合溶液中侵泡半小時(shí)。紫外可見(jiàn)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(guò)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="手持紫外可見(jiàn)分光光度計(jì)生產(chǎn)廠家,紫外可見(jiàn)分光光度計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637396592124342670/5540999.png"></div><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，可以改用光程較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。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)設(shè)備</p><p style="text-indent:25px">紫外可見(jiàn)分光光度計(jì)主要由光源系統(tǒng)、單色器系統(tǒng)、樣品室、檢測(cè)系統(tǒng)組成。手持紫外可見(jiàn)分光光度計(jì)生產(chǎn)廠家</p><p style="text-indent:25px">在人類社會(huì)進(jìn)入知識(shí)經(jīng)濟(jì)時(shí)代、信息技術(shù)高速發(fā)展的背景下，儀器儀表及其測(cè)量操控技術(shù)得到日益普遍應(yīng)用，給儀器儀表行業(yè)的飛速發(fā)展提供了良好契機(jī)。經(jīng)過(guò)近十年來(lái)的建設(shè)與發(fā)展，我國(guó)儀器儀表已經(jīng)初步形成產(chǎn)品門類品種比較齊全，具有一定生產(chǎn)規(guī)模和開發(fā)能力的產(chǎn)業(yè)體系，成為亞洲除日本以外第二大儀器儀表生產(chǎn)國(guó)。進(jìn)一步提升我國(guó)儀器儀表技術(shù)和水平，有限責(zé)任公司企業(yè)要順應(yīng)產(chǎn)業(yè)發(fā)展潮流，在穩(wěn)固常規(guī)品種的同時(shí)，進(jìn)一步發(fā)展智能儀器儀表，提升產(chǎn)業(yè)數(shù)字化、智能化、集成化水平。我國(guó)的互聯(lián)網(wǎng)行業(yè)從有到無(wú)、從有到繁榮，經(jīng)歷一個(gè)高速發(fā)展的階段。而我國(guó)的儀器儀表行業(yè)借助互聯(lián)網(wǎng)的發(fā)展平臺(tái)開創(chuàng)了一條嶄新發(fā)展之路，開拓分光光度計(jì)，氣相色譜，原子吸收，食品安全新市場(chǎng)。隨著中國(guó)的不斷進(jìn)步，世界上只有一個(gè)救世主——市場(chǎng)，能救企業(yè)的只有你自己——自強(qiáng)，提高生產(chǎn)型重點(diǎn)競(jìng)爭(zhēng)力才是中國(guó)制造業(yè)的獨(dú)一出路。以顯微科學(xué)儀器行業(yè)的發(fā)展與變化為例，以親身的實(shí)踐為例，毛磊認(rèn)為，隨著經(jīng)濟(jì)的不斷發(fā)展，我國(guó)的環(huán)境和實(shí)力都發(fā)生了巨大變化，有了完全不同的基礎(chǔ)，這為國(guó)產(chǎn)科學(xué)儀器走向高端增強(qiáng)了信心。手持紫外可見(jiàn)分光光度計(jì)生產(chǎn)廠家</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。公司自成立以來(lái)，以質(zhì)量為發(fā)展，讓匠心彌散在每個(gè)細(xì)節(jié)，公司旗下分光光度計(jì)，氣相色譜，原子吸收，食品安全深受客戶的喜愛(ài)。公司從事儀器儀表多年，有著創(chuàng)新的設(shè)計(jì)、強(qiáng)大的技術(shù)，還有一批獨(dú)立的專業(yè)化的隊(duì)伍，確保為客戶提供良好的產(chǎn)品及服務(wù)。儀電分析憑借創(chuàng)新的產(chǎn)品、專業(yè)的服務(wù)、眾多的成功案例積累起來(lái)的聲譽(yù)和口碑，讓企業(yè)發(fā)展再上新高。</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/2022941.html</p></div></div></div></div></div><div id="cugdprs" class="page-right twoColRt"><div id="d3l2gaa" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="7kd8iok" 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) 信息推薦自業(yè)物資供應(yīng)</p></a></div><div id="er732xb" 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