HH-BEN-2在线填充柱 气相色谱法测定室内空气中苯系物

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气相色谱法测定室内空气中苯系物
气相色谱法测定室内空气中苯系物 详细信息：

名称：苯系物专用柱
规格：2m*1/8
型号：HH-BEN-2
应用：苯系物在线测定

室内空气的苯系物监测的不确定度分析有助于提高室内空气监测工作的准确度.为此找出了影响苯系物测定的主要干扰因素,对其影响作了评估,并采取有关方法进行改进,以降低不确定度,提高测量的准确度.

浩瀚色谱（山东）应用技术开发有限公司优化了固体吸附/热解吸-气相色谱法测定室内空气中苯,甲苯,乙苯,对二甲苯,间二甲苯,异丙苯,邻二甲苯和苯乙烯等8种苯系物的方法.结果表明,目标物色谱峰分离度均大于1.5;在10～500 ng范围内,8种苯系物质量与色谱峰面积呈良好的线性,相关系数r为0.999 7～0.999 9;该方法的检出限为0.50～3.48ng,当采气量为2L时,低检出浓度为0.25×10~(-3)～1.74×10~(-3)mg/m~3,相对标准偏差为1.2%～9.1%(n=6),回收率在94.0%～99.5%之间.该方法分离效果好,灵敏度高,精密度好,结果准确,可用于室内空气中苯系物含量的检测.

气相色谱法测定室内空气中苯系物   测试谱图：




Determination of Benzenes in Indoor Air by Gas Chromatography
Determination of Benzenes in Indoor Air by Gas Chromatography Details:

Name: Special column for benzene series
Specifications: 2m*1/8
Model: HH-BEN-2
Application: On-line determination of benzene series

Uncertainty analysis of benzene series monitoring in indoor air is helpful to improve the accuracy of indoor air monitoring. To this end, the main interference factors affecting the measurement of benzene series have been found out, their influences have been evaluated, and relevant methods have been adopted. Improvements have been made to reduce uncertainty and improve measurement accuracy.

Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. optimized solid adsorption/thermal desorption-gas chromatography for the determination of benzene, toluene, ethylbenzene, p-xylene, m-xylene, cumene, o-xylene and benzene in indoor air The results showed that the chromatographic peak resolutions of the target compounds were all greater than 1.5; in the range of 10-500 ng, the mass of the 8 benzene series and the chromatographic peak area showed a good linearity, and the correlation coefficient r was 0.999 7～0.999 9; the detection limit of this method is 0.50～3.48ng, when the gas extraction volume is 2L, the minimum detection concentration is 0.25×10~(-3)～1.74×10~(-3)mg/m ~3, the relative standard deviation is 1.2%-9.1% (n=6), and the recovery rate is between 94.0% and 99.5%. The method has good separation effect, high sensitivity, good precision and accurate results, and can be used in indoor air Detection of benzene series content.

Determination of benzene series in indoor air by gas chromatography Test spectrum: