車載原子吸收分光光度計(jì)性價(jià)比推薦咨詢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="原子吸收光譜儀分析中的干擾效應(yīng)：1.物理干擾：物理干擾是指試樣在轉(zhuǎn)移、蒸發(fā)和原子化過(guò)程中，由于試樣任何物理特性（如粘度、表面張力、密度等）的變化而引起的原子吸收強(qiáng)度下降的效應(yīng)。物理干擾是非選擇性干擾，對(duì)試樣各元素的影響基本是相似的。配制與被"><meta name="keywords" content="車載原子吸收分光光度計(jì)性價(jià)比,原子吸收分光光度計(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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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="rlfc4xz" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988105282341/1372565.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="y8ykzqx" 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>車載原子吸收分光光度計(jì)性價(jià)比,原子吸收分光光度計(jì)</p><p><span>***更新：</span>2021-02-07 02:10:21</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="qkz38ov" 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="e3tv4wy" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="lpuyxtf" class="box"><p><p style="text-indent:25px">原子吸收光譜儀分析中的干擾效應(yīng)：1.物理干擾：物理干擾是指試樣在轉(zhuǎn)移、蒸發(fā)和原子化過(guò)程中，由于試樣任何物理特性（如粘度、表面張力、密度等）的變化而引起的原子吸收強(qiáng)度下降的效應(yīng)。物理干擾是非選擇性干擾，對(duì)試樣各元素的影響基本是相似的。配制與被測(cè)試樣相似組成的標(biāo)準(zhǔn)樣品，是消除物理干擾較常用的方法。在不知道試樣組成或無(wú)法匹配試樣時(shí)，可采用標(biāo)準(zhǔn)加入法或稀釋法來(lái)減小和消除物理干擾。2.化學(xué)干擾：化學(xué)干擾是由于液相或氣相中被測(cè)元素的原子與干擾物質(zhì)組分之間形成熱力學(xué)更穩(wěn)定的化合物，從而影響被測(cè)元素化合物的解離及其原子化。磷酸根對(duì)鈣的干擾，硅、鈦形成難解離的氧化物，車載原子吸收分光光度計(jì)性價(jià)比、鎢、硼、希土元素等生成難解離的碳化物，從而使有關(guān)元素不能有效原子化，車載原子吸收分光光度計(jì)性價(jià)比，車載原子吸收分光光度計(jì)性價(jià)比，都是化學(xué)干擾的例子?；瘜W(xué)干擾是一種選擇性干擾。原子吸收分光光度計(jì)氧化亞氮—乙炔火焰安全性較差。車載原子吸收分光光度計(jì)性價(jià)比</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="車載原子吸收分光光度計(jì)性價(jià)比,原子吸收分光光度計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988105282341/1372565.png"></div><p style="text-indent:25px">電熱原子化器電熱原子化器的種類有多種，如電熱高溫管式石墨爐原子化器、石墨杯原子化器、鉭舟原子化器、碳棒原子化器、鎳杯原子化器、高頻感應(yīng)爐和等離子噴焰等。在商品儀器中常用的電熱原子化器是管式石墨爐原子化器。石墨爐是用石墨管做成，將樣品用進(jìn)樣器定量注入石墨管中，并以石墨管作為電阻發(fā)熱體，通電后迅速升溫，使試樣達(dá)到原子化目的。它由加熱電源、保護(hù)氣控制系統(tǒng)和石墨管狀爐組成。外電源加于石墨管兩端供給原子化器能量，電流通過(guò)石墨管產(chǎn)生3000℃的高溫，使置于石墨管中的被測(cè)元素變?yōu)榛鶓B(tài)原子蒸氣。保護(hù)氣系統(tǒng)是控制保護(hù)氣的。外氣路中的Ar氣沿石墨管外壁流動(dòng)，以保護(hù)石墨管不被燒蝕；內(nèi)氣路中的Ar從管兩端流向管中心由管中心孔流出以有效地除去在干燥和灰化過(guò)程中產(chǎn)生的基體成分，同時(shí)保護(hù)已經(jīng)原子化了的原子不再被氧化?？煽吭游辗止夤舛扔?jì)差價(jià)原子吸收分光光度計(jì)由于儀器使用中，需用乙炔、氫氣、氬氣、氧化亞氮（俗稱笑氣）等。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="車載原子吸收分光光度計(jì)性價(jià)比,原子吸收分光光度計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419988246893719/5353894.png"></div><p style="text-indent:25px">為使原子吸收分光光度計(jì)檢測(cè)功能在檢定期間內(nèi)處于正常的工作狀態(tài)，確保檢驗(yàn)結(jié)果的準(zhǔn)確性和有效性。1、在儀器設(shè)備兩次檢定期間，對(duì)該設(shè)備進(jìn)行期間核查，以驗(yàn)證設(shè)備是否保持校準(zhǔn)時(shí)的狀態(tài),確保檢驗(yàn)結(jié)果的準(zhǔn)確性和有效性原子吸收分光光度計(jì)。2、范圍適用于各型號(hào)原子吸收分光光度計(jì)的期間核查。3、核查項(xiàng)目3.1標(biāo)準(zhǔn)曲線相關(guān)系數(shù)、精密度（RSD）、檢出限（L）、以及采用有證的標(biāo)準(zhǔn)物質(zhì)（已知濃度u并給出不確定度Ur的任何一種單標(biāo)準(zhǔn)物質(zhì)）進(jìn)行檢測(cè)結(jié)果的評(píng)定。3.2期間核查時(shí)可用上述的核查方法中的一種或多種。4、核查依據(jù)各型號(hào)原子吸收分光光度計(jì)使用說(shuō)明書以及相關(guān)的資料。</p><p style="text-indent:25px">原子吸收分光光度計(jì)把有單光束和雙度光束兩種類型如果將原子化質(zhì)器當(dāng)作分光光度計(jì)的比色皿，其儀器的構(gòu)造到與分光光度計(jì)比較相似。與分光光度計(jì)相比，不同點(diǎn)：(1)采用銳線光源；(2)單色器在火焰與檢測(cè)器之間。如果像分光光度計(jì)那樣，把單色器置于原子化器之前，火焰本身所發(fā)射的連續(xù)光譜就會(huì)直接照射在PMT上，會(huì)導(dǎo)致PMT壽命縮短，甚至不能正常工作。(3)原子化系統(tǒng)：除了光源發(fā)射的光外，還存在：a.火焰本身所發(fā)射的連續(xù)光譜；b.原子吸收中的原子發(fā)射現(xiàn)象。在原子化過(guò)程中，基態(tài)原子受到輻射躍遷到激發(fā)態(tài)后，處于不穩(wěn)定狀態(tài)，返回基態(tài)時(shí)，可能將能量又以光的形式釋放出來(lái)。故既存在原子吸收，也有原子發(fā)射。產(chǎn)生的輻射也不一定在一個(gè)方向上，但對(duì)測(cè)量仍將產(chǎn)生一定干擾。將試樣中待測(cè)元素變成氣態(tài)的基態(tài)原子的過(guò)程稱為試樣的“原子化”。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="車載原子吸收分光光度計(jì)性價(jià)比,原子吸收分光光度計(jì)" src="https://tyunfile.71360.com/WaterMark/UploadFile/ydfx123/637419991252020619/9480950.png"></div><p style="text-indent:25px">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：1、光源:紫外可見分光光度計(jì)使用的是鎢燈或氘燈發(fā)射連續(xù)光譜。原子吸收分光光度計(jì)使用的是空心陰極燈發(fā)射特征波長(zhǎng)的銳線光，選擇性會(huì)更好。2、檢測(cè)器：紫外可見分光光度計(jì)一般使用光電管來(lái)檢測(cè)。而原子吸收分光光度計(jì)使用的是光電倍增管，分辨力比光電管強(qiáng)。3、應(yīng)用：原子吸收分光光度計(jì)是屬于原子光譜。紫外可見分光光度計(jì)屬于分子光譜，兩者都符合朗伯-比耳定律；4、檢出限:原子吸收分光光度計(jì)檢出限低，火焰原子吸收法的檢出限可達(dá)到ppb級(jí)。紫外可見分光光度計(jì)如果顯色劑不同則檢出限也不一樣，但每種顯色劑帶來(lái)的干擾也會(huì)不一樣。原子吸收分光光度計(jì)安全操作須知：點(diǎn)火前排風(fēng)裝置必須打開。國(guó)產(chǎn)原子吸收分光光度計(jì)代理</p><p style="text-indent:25px">試樣中被測(cè)元素原子化的方法主要有火焰原子化法和非火焰原子化法兩種。車載原子吸收分光光度計(jì)性價(jià)比</p><p style="text-indent:25px">儀器儀表行業(yè)飛速發(fā)展一是因?yàn)槲覈?guó)的經(jīng)濟(jì)高速穩(wěn)定發(fā)展的運(yùn)行;按照過(guò)去的經(jīng)驗(yàn)，如果GDP的增長(zhǎng)在10%以上時(shí)，儀表行業(yè)的增長(zhǎng)率則在26%～30%之間。二是因?yàn)槲覈?guó)宏觀調(diào)控對(duì)儀表行業(yè)的影響有一個(gè)滯后期，儀表往往在工程的后期才交付使用，因此，因宏觀調(diào)控政策而減少的收入對(duì)儀表行業(yè)的影響不會(huì)太大。我國(guó)現(xiàn)有有限責(zé)任公司企業(yè)數(shù)千多家，已經(jīng)形成門類品種比較齊全，具有一定技術(shù)基礎(chǔ)和生產(chǎn)規(guī)模的產(chǎn)業(yè)體系。但同時(shí)業(yè)內(nèi)行家也指出，雖然我國(guó)測(cè)試儀器產(chǎn)業(yè)有了一定的發(fā)展，但遠(yuǎn)遠(yuǎn)不能滿足國(guó)民經(jīng)濟(jì)各行各業(yè)日益增長(zhǎng)的迫切需求。工業(yè)領(lǐng)域轉(zhuǎn)型升級(jí)、提升發(fā)展質(zhì)量等有利于儀器儀表行業(yè)的發(fā)展；**安全、社會(huì)安全、產(chǎn)業(yè)和信息安全等需要自主、分光光度計(jì)，氣相色譜，原子吸收，食品安全裝備，成為全社會(huì)共識(shí)；為迎接生產(chǎn)型百年未有之大變局，行家認(rèn)為，要重新定義中國(guó)在世界經(jīng)濟(jì)版圖中的地位，要順應(yīng)形勢(shì)實(shí)現(xiàn)制造升級(jí)。以華立集團(tuán)在境外開發(fā)“中國(guó)工業(yè)園”的成功案例來(lái)闡述，跨國(guó)經(jīng)營(yíng)要成為企業(yè)主動(dòng)的戰(zhàn)略選擇，在不確定性中更好地活下去，以全球化視野看問題，很多困惑在全球化過(guò)程中會(huì)迎刃而解。車載原子吸收分光光度計(jì)性價(jià)比</p></p><br /><p>文章來(lái)源地址: 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