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产品名称: | 标准溶液 固定污染源废气苯系物测定 |
产品型号: | 标准溶液 |
品牌: | 1941 |
产品数量: | |
产品单价: | 面议 |
日期: | 2023-07-11 |
标准溶液 固定污染源废气苯系物测定的详细资料
固定污染源废气苯系物测定1 适用范围
本标准规定了测定固定污染源废气中苯系物的气袋采样/直接进样-气相色谱法。
本标准适用于固定污染源废气中的苯、甲苯、乙苯、邻二甲苯、间二甲苯、对二甲苯、异丙苯和苯乙烯的测定。
当进样体积为 1.0ml时,苯、甲苯、乙苯、邻二甲苯、间二甲苯、对二甲苯、异丙苯和苯乙烯方法检出限为 0.2~0.6mg/m3,测定下限为 0.4~2.4mg/m3,详见附录 A。
2 规范性引用文件
本标准引用了下列文件或其中的条款。凡是不注日期的引用文件,其有效版本适用于本标准。
GB/T 16157 固定污染源排气中颗粒物测定与气态污染物采样方法
HJ 732 固定污染源废气 挥发性有机物的采样
HJ/T 397 气袋法固定源废气监测技术规范
3 方法原理
用气袋采集固定污染源废气中苯系物,取一定体积的样品直接注入带有氢火焰化检测器 (FID)的气相色谱仪中直接测定分析。根据保留时间定性,峰面积定量。
4 干扰和消除
样品成分复杂时会对测定产生干扰,可以使用 GC/MS 定性确认。
5 试剂和材料
除非另有说明,分析时均使用符合国家标准的分析纯试剂。
5.1 标准气体:含有苯、甲苯、乙苯、邻二甲苯、间二甲苯、对二甲苯、异丙苯、苯乙烯待测化合物的有证标准气体,且钢瓶压力输出为10MPa。
5.2 标准物质:苯、甲苯、乙苯、邻二甲苯、间二甲苯、对二甲苯、异丙苯、苯乙烯,色谱纯。
5.3 氮气:纯度≥99.99%。
5.4 氢气:纯度≥99.99%。
5.5 空气:用净化管净化。
固定污染源废气苯系物测定 图片:
Determination of benzene series in statio
Determination of benzene series in waste gas from statio
Fixed pollution source waste gas Determination of benzene series Air bag sampling Direct injection-gas chromatography (draft for comments)
1 Scope of application
This standard specifies the air bag sampling/direct injection-gas chromatography method for the determination of benzene series in waste gas from statio
This standard is applicable to the determination of benzene, toluene, ethylbenzene, o-xylene, m-xylene, p-xylene, cumene and styrene in waste gas from statio
When the injection volume is 1.0ml, the detection limit of benzene, toluene, ethylbenzene, o-xylene, m-xylene, p-xylene, cumene and styrene is 0.2~0.6mg/m3, and the lower limit of determination is 0.4 ~2.4mg/m3, see Appendix A for details.
2 Normative references
This standard quotes the following docu
GB/T 16157 Determination of particulate matter in exhaust from statio
HJ 732 Sampling of volatile organic compounds from statio
HJ/T 397 Airbag method fixed source exhaust gas mo
3 Principles of the method
Use an air bag to collect the benzene series in the exhaust gas of a fixed pollution source, and take a certain volume of sample directly into a gas chromatograph with a hydrogen flame detector (FID) for direct measurement and analysis. Qualitative ba
4 Interference and elimination
Complicated sample composition will interfere with the determination, which can be qualitatively co
5 Reagents and materials
Unless otherwise specified, analytical reagents that meet natio
5.1 Standard gas: a certified standard gas co
5.2 Standard materials: benzene, toluene, ethylbenzene, o-xylene, m-xylene, p-xylene, cumene, styrene, chromatographically pure.
5.3 Nitrogen: purity ≥99.99%.
5.4 Hydrogen: purity ≥99.99%.
5.5 Air: Purify with a purification tube.
Determination of benzene series in waste gas from statio