苯系物一般是苯、甲苯、乙苯、對二甲苯、間二甲苯、鄰二甲苯、異丙苯、苯乙烯的統(tǒng)稱，它是大氣環(huán)境和許多污染源氣體中見的化合物，對人體健康都具有一定的危害作用，是環(huán)境的重要污染物。苯廣泛地應用在化工生產(chǎn)中，它是制造染料、香料、合成纖維、合成洗滌劑、聚苯乙烯塑料、丁苯橡膠、、農(nóng)藥殺蟲劑(如六六六)等的基本原料。它也是制造油基漆、硝基漆等的原料?；S超標排放的廢水、廢氣是造成環(huán)境中苯污染事故的主要根源。

近年來，我國的空氣質(zhì)量普遍受到污染，苯系物含量的高低能直接表示大氣中有機物污染的水平，測定大氣中的苯系物，有助于評價大氣污染狀況。因為本標準的制定也是為了適應和滿足質(zhì)量標準與污染物排放(控制)標準的的污染項目監(jiān)測要求及環(huán)境重點工作涉及的污染物項目監(jiān)測要求。

本標準規(guī)定了測定固定污染源廢氣中苯系物的氣袋采樣/直接進樣-氣相色譜法，適用于固定污染源廢氣中的苯、甲苯、乙苯、鄰二甲苯、間二甲苯、對二甲苯、異丙苯和苯乙烯的測定。當進樣體積為 1.0 ml 時，苯、甲苯、乙苯、鄰二甲苯、間二甲苯、對二甲苯、異丙苯和苯乙烯方法檢出限為 0.2～0.6 mg/m3，測定下限為 0.4～2.4 mg/m3，詳見附錄 A。

苯系物標準氣體 測試譜圖：


Benzene series standard gas
Benzene series standard gas Details:

Standard gas:
Benzene series
Volume: 4L/8L
Aluminum alloy cylinder
Application: fixed pollution source waste gas determination of benzene series air bag sampling/direct injection-gas chromatography

In order to implement the "Environmental Protection Law of the People's Republic of China", protect the ecological environment, protect human health, improve the level of ecological environmental management, and standardize ecological environmental monitoring, the Ministry of Ecology and Environment has decided to formulate the "Determination of Fixed Pollution Source Waste Gas Benzene Series Airbag Sampling/Direct Injection-Gas Chromatography" National Environmental Protection Standard.

Benzene compounds are generally collectively referred to as benzene, toluene, ethylbenzene, p-xylene, meta-xylene, o-xylene, cumene, and styrene. It is the most common compound in the atmospheric environment and many pollution source gases, and is good for human health. Both have certain harmful effects and are important pollutants of the environment. Benzene is widely used in chemical production. It is the basic raw material for the manufacture of dyes, fragrances, synthetic fibers, synthetic detergents, polystyrene plastics, styrene butadiene rubber, explosives, pesticides and pesticides (such as BHC). It is also a raw material for manufacturing oil-based paint, nitrocellulose paint, etc. Excessive discharge of waste water and waste gas from chemical plants is the main source of benzene pollution accidents in the environment.


In recent years, the air quality in our country has been generally polluted. The level of benzene series can directly indicate the level of organic pollution in the atmosphere. The determination of benzene series in the atmosphere is helpful to evaluate the situation of air pollution. Because this standard is also formulated to meet and meet the pollution project monitoring requirements of quality standards and pollutant discharge (control) standards and the monitoring requirements of pollutant projects involved in key environmental work.


This standard specifies the air bag sampling/direct injection-gas chromatography method for the determination of benzene series in waste gas from stationary sources. It is suitable for benzene, toluene, ethylbenzene, o-xylene, meta-xylene, and p-xylene in waste gas from stationary sources. , Cumene and Styrene. When the injection volume is 1.0 ml, the detection limit of benzene, toluene, ethylbenzene, o-xylene, m-xylene, p-xylene, cumene and styrene is 0.2～0.6 mg/m3, and the lower limit of determination is 0.4 ~2.4 mg/m3, see Appendix A for details.

Benzene series standard gas test spectrum: