The simultaneous determination of vinyl chloride and acrolein in fixed pollution sources is based on the national ecological environment standard HJ □□□□ -202 □ "Determination of vinyl chloride and acrolein in fixed pollution source exhaust gas by gas chromatography" (draft for comments) issued by the Ministry of Ecology and Environment. This standard integrates and revises the original HJ/T 34-1999 and HJ/T 36-1999, and is applicable to the determination of vinyl chloride and acrolein in the air of organized and unorganized emission monitoring points of fixed pollution sources.
Method principle and scope of application: This method is based on gas chromatography for determination. After separating vinyl chloride and acrolein through a chromatographic column, quantitative analysis is performed using a detector (such as a flame ionization detector); The standard name has been updated and the scope of application has been expanded to cover the determination of two compounds simultaneously.
Key method parameters: When the injection volume is 1.0 ml, the detection limits of vinyl chloride and acrolein are 0.07 mg/m ³ and 0.08 mg/m ³, respectively, and the lower limits of determination are 0.28 mg/m ³ and 0.32 mg/m ³, respectively. The standard also improves the reagents (such as standard gas stored in high-pressure steel cylinders), instruments (such as sampling tubes with heating function), and sampling methods (adding gas bag sampling), and strengthens quality assurance and quality control requirements.
Interference and elimination: Possible interference in complex matrix samples can be eliminated by selecting chromatography columns with different polarities or by qualitative confirmation using gas chromatography/mass spectrometry (GC/MS).
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Precautions for operation: The standard substance used in the experiment is a volatile toxic chemical. It should be operated under ventilated conditions and protective equipment should be worn to avoid inhalation; After the implementation of the standard, the original HJ/T 34-1999 and HJ/T 36-1999 will be abolished simultaneously, and the actual application shall be subject to the officially released version.
适用范围 本标准规定了测定固定污染源有组织排放废气和无组织排放监控点空气中氯乙烯和丙 xi醛的气相色谱法.
本标准适用于固定污染源有组织排放废气和无组织排放监控点空气中氯乙烯和丙xi醛 的测定
浩瀚色谱(山东)应用技术开发有限公司，针对固定污染源排气中氯乙烯和丙烯醛进行测定,建立采用针筒采样、手动进样、HH-WAX毛细管柱分离、FID检测器进行检测的方法。通过毛细管柱分离的目标化合物峰形对称、分离度好,与其它干扰的化合物有较好的分离。氯乙烯和丙烯醛检出限为0.138 mg/m^3和0.128 mg/m^3,满足固定污染源排气监测要求,并在1-220 mg/m^3范围内可以进行准确测定。对配制标气和用空气模拟的实际样品的测定,RSD均在8%以内。通过保存时间对浓度影响的研究,推荐采样24 h完成分析。
名称：毛细管柱
固定相：聚乙二醇
规格：30m*0.32mm*1um
型号：PEG-20M
zui高温度：250°C
应用：固定污染源废气 氯乙烯和丙xi醛的测定 气相色谱法
适用于：
安捷伦490在线/便携，4890,5890,6890,7820,7890,8860,8890
岛津GC-14C，GC-2010，GC-2014，GC-2030
赛默飞1310,1300,1610,1600
瓦里安3800系列
布鲁克PE580,590,680,690
磐诺A90，福立GC9790，华爱，天瑞，天美，GC7900，川仪，北分瑞利，东西电子，鲁南瑞虹，捷岛/科晓
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