15% 聚乙二醇-20M / Chromosorb W AW DMCS 填充柱?測(cè)定廢氣中丙烯醛，這是一個(gè)非常經(jīng)典且可靠的氣相色譜分析方法。
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采用填充柱氣相色譜-氫火焰離子化檢測(cè)器（GC-FID）對(duì)廢氣中的丙烯醛進(jìn)行定性和定量分析。樣品經(jīng)采集后（通常使用吸收瓶或氣袋），直接或經(jīng)過稀釋后注入氣相色譜系統(tǒng)。目標(biāo)化合物在色譜柱上實(shí)現(xiàn)分離，并由FID檢測(cè)器進(jìn)行檢測(cè)。
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?方法原理
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采樣：廢氣中的丙烯醛用蒸餾水或合適的吸收液（如2,4-二硝基苯肼衍生化法，但本方法為直接進(jìn)樣）采集。
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分離：氣態(tài)樣品通過進(jìn)樣口進(jìn)入色譜系統(tǒng)。在載氣的帶動(dòng)下，樣品流經(jīng)色譜柱。
固定相：聚乙二醇-20M (PEG-20M)?是一種極性固定液，對(duì)含羰基（C=O）、羥基（-OH）的化合物有較好的保留和分離能力。
- 載體：Chromosorb W AW DMCS?是經(jīng)過酸洗（AW）和二甲基二氯硅烷（DMCS）處理的硅藻土載體，表面惰性好，能有效減少極性化合物（如丙烯醛）的拖尾和吸附現(xiàn)象。
- 15%?的涂漬量屬于高配比，提供了足夠的固定相以充分分離揮發(fā)性有機(jī)極性化合物。
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檢測(cè)：分離后的組分依次進(jìn)入FID檢測(cè)器。丙烯醛在氫火焰中燃燒產(chǎn)生離子，這些離子被收集極捕獲形成電信號(hào)，其強(qiáng)度與組分的質(zhì)量成正比。
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定性與定量：通過對(duì)比樣品和標(biāo)準(zhǔn)品的保留時(shí)間進(jìn)行定性，采用外標(biāo)法或內(nèi)標(biāo)法進(jìn)行定量分析。
名稱：15%聚乙二醇-20M/Chromosorb W AW填充柱
規(guī)格：3m*3mm，60-80目
ZUI高溫度：240°C
應(yīng)用：HJ_T 36-1999 固定污染源排氣中丙xi醛的測(cè)定 氣相色譜法
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浩瀚色譜（山東）應(yīng)用技術(shù)開發(fā)有限公司，采用HJ1999丙xi醛測(cè)定PEG20M色譜柱賽默飛?測(cè)定固定污染源排氣中丙xi醛，
面積外標(biāo)法定量，在安捷倫，島津，賽默飛，瓦里安，布魯克，PE上安裝使用，效果良好。
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適用于：
安捷倫490在線/便攜，4890,5890,6890,7820,7890,8860,8890
島津GC-14C，GC-2010，GC-2014，GC-2030
賽默飛1310,1300,1610,1600
瓦里安3800系列
布魯克PE580,590,680,690
磐諾A90，福立GC9790，華愛，天瑞，天美，GC7900，川儀，北分瑞利，東西電子，魯南瑞虹，捷島/科曉
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The determination of acrolein in exhaust gas using a 15% PEG-20M/Chromosorb W AW DMCS packed column is a very classic and reliable gas chromatography analysis method.
Qualitative and quantitative analysis of acrolein in exhaust gas was performed using packed column gas chromatography hydrogen flame ionization detector (GC-FID). After the sample is collected (usually using an absorption bottle or gas bag), it is injected directly or diluted into a gas chromatography system. The target compound is separated on a chromatographic column and detected by a FID detector.
Method principle
Sampling: Acrolein in the exhaust gas is collected using distilled water or a suitable absorption solution (such as 2,4-dinitrophenylhydrazine derivatization method, but this method involves direct injection).
Separation: Gaseous samples enter the chromatography system through the injection port. Driven by the carrier gas, the sample flows through the chromatographic column.
Fixed phase: PEG-20M is a polar stationary phase with good retention and separation ability for compounds containing carbonyl (C=O) and hydroxyl (- OH) groups.
Carrier: Chromosorb W AW DMCS is a diatomaceous earth carrier treated with acid washing (AW) and dimethyl dichlorosilane (DMCS). It has a good surface inertness and can effectively reduce the tailing and adsorption of polar compounds such as acrolein.
A coating amount of 15% belongs to a high proportion, providing sufficient stationary phase to fully separate volatile organic polar compounds.
Detection: The separated components enter the FID detector in sequence. Acrolein burns in a hydrogen flame to produce ions, which are captured by the collection electrode to form an electrical signal whose intensity is proportional to the mass of the component.
Qualitative and quantitative analysis: Qualitative analysis is conducted by comparing the retention time of samples and standards, and quantitative analysis is performed using external or internal standard methods.
Name: 15% Polyethylene Glycol-20M/Chromosorb W AW Filled Column
Specification: 3m * 3mm, 60-80 mesh
ZUI high temperature: 240 ° C
Application: HJ_T 36-1999 Determination of Propionaldehyde in Fixed Source Exhaust Gas by Gas Chromatography
Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. uses HJ1999 formaldehyde determination PEG20M chromatographic column Thermo Fisher Scientific to determine formaldehyde in exhaust gas from fixed pollution sources,
The area external standard method for quantification has been installed and used on Agilent, Shimadzu, Thermo Fisher, Varian, Brooke, and PE with good results.
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