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顶空-气相色谱法测定环境空气和废气中的甲醇
顶空-气相色谱法测定环境空气和废气中的甲醇详细信息：

本标准规定了测定环境空气和废气中甲醇的顶空/气相色谱法。本标准适用于环境空气、无组织排放监控点空气和固定污染源有组织排放废气中甲醇的测定。环境空气和无组织排放监控点空气采样体积为 20 L，进样量为 1.0 mL 时，方法检出限为 0.05 mg/m3，测定下限为 0.2 mg/m3；固定污染源有组织排放废气采样体积为 10 L，进样量为 1.0 mL 时，方法检出限为 0.1 mg/m3，测定下限为 0.4 mg/m3。

浩瀚色谱(山东)应用技术开发有限公司,采用聚乙二醇20M建立了用纯水直接吸收环境空气或工业废气中的甲醇，采用顶空进样，气相色谱进行定性定量测定。该方法最低检出质量浓度为0．590mg·m^-3相对标准偏差在4.8％-7．2％之间，加标回收率在89％～115％之间。结果表明，方法简单灵敏，线性范围良好，检出限低，精密度好，定性定量准确；经实际样品测定，完全满足环境空气和废气中甲醇的监测要求。

名称：毛细管柱
固定相：聚乙二醇
规格：30m*0.53mm*1um
型号：PEG-20M/HH-WAX
应用：环境空气和废气 甲醇的测定 顶空/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

顶空-气相色谱法测定环境空气和废气中的甲醇 图片：






Determination of Methanol in Ambient Air and Exhaust Gases by Headspace-Gas Chromatography
Determination of Methanol in Ambient Air and Exhaust Gas by Headspace-Gas Chromatography: Detailed Information

This standard specifies the headspace/gas chromatography method for determining methanol in ambient air and waste gases. It applies to the determination of methanol in ambient air, air at unorganized emission monitoring points, and waste gases from fixed pollution sources with organized emissions. For ambient air and air at unorganized emission monitoring points, with a sampling volume of 20 L and an injection volume of 1.0 mL, the method detection limit is 0.05 mg/m³ and the measurement limit is 0.2 mg/m³. For waste gases from fixed pollution sources with organized emissions, with a sampling volume of 10 L and an injection volume of 1.0 mL, the method detection limit is 0.1 mg/m³ and the measurement limit is 0.4 mg/m³.
Haohan Chromatography (Shandong) Application Technology Co., Ltd. established a method for the qualitative and quantitative determination of methanol in ambient air or industrial waste gas using pure water direct absorption, employing headspace sampling and gas chromatography. The method has a minimum detection mass concentration of 0.590 mg·m^-3, with relative standard deviations ranging between 4.8% and 7.2%, and spiked recovery rates between 89% and 115%. The results demonstrate that the method is simple, sensitive, with a favorable linear range, low detection limit, good precision, and accurate qualitative and quantitative analysis. Practical sample measurements confirm that it fully meets the monitoring requirements for methanol in ambient air and waste gas.


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