Zeng Pei-Yuan, Li Jian-Jun, Liao Dong-Qi, Tu Xiang, Xu Mei-Ying, Sun Guo-Ping
Huan Jing Ke Xue. 2013 Dec;34(12):4592-8.
Emission characteristics of volatile organic compounds (VOCs) were investigated in an automotive coating manufacturing enterprise. Air samples were taken from eight different manufacturing areas in three workshops, and the species of VOCs and their concentrations were measured by gas chromatography-mass spectrometry (GC-MS). Safety evaluation was also conducted by comparing the concentration of VOCs with the permissible concentration-short term exposure limit (PC-STEL) regulated by the Ministry of Health. The results showed that fifteen VOCs were detected in the indoor air of the automotive coatings workshop, including benzene, toluene, ethylbenzene, xylene, ethyl acetate, butyl acetate, methyl isobutyl ketone, propylene glycol monomethyl ether acetate, trimethylbenzene and ethylene glycol monobutyl ether, Their concentrations widely ranged from 0.51 to 593.14 mg x m(-3). The concentrations of TVOCs were significantly different among different manufacturing processes. Even in the same manufacturing process, the concentrations of each component measured at different times were also greatly different. The predominant VOCs of indoor air in the workshop were identified to be ethylbenzene and butyl acetate. The concentrations of most VOCs exceeded the occupational exposure limits, so the corresponding control measures should be taken to protect the health of the workers.
在一家汽车涂料制造企业中对挥发性有机化合物（VOCs）的排放特征进行了调查。从三个车间的八个不同生产区域采集空气样本，并通过气相色谱 - 质谱联用仪（GC - MS）测定VOCs的种类及其浓度。还通过将VOCs浓度与卫生部规定的短时间接触容许浓度（PC - STEL）进行比较来进行安全性评估。结果表明，在汽车涂料车间的室内空气中检测到15种VOCs，包括苯、甲苯、乙苯、二甲苯、乙酸乙酯、乙酸丁酯、甲基异丁基酮、丙二醇单甲醚乙酸酯、三甲苯和乙二醇单丁醚，它们的浓度范围广泛，从0.51至593.14 mg·m⁻³。不同生产工艺中TVOCs的浓度存在显著差异。即使在相同的生产工艺中，不同时间测得的各组分浓度也有很大差异。车间室内空气中的主要VOCs被确定为乙苯和乙酸丁酯。大多数VOCs的浓度超过了职业接触限值，因此应采取相应的控制措施以保护工人的健康。
