title: [Risk assessment and countermeasures of BTEX contamination in soils of typical pesticide factory].
abstract: Soil samples around three representative pesticide factories were collected in Zhangjiakou City, Hebei Province, and analyzed to identify their pollution characteristics and health risk of BTEX by purge-and trap and gas chromatography/mass spectroscopy method. Total concentrations of BTEX in soils in Plant A, B and C ranged from 673.50 to 32 363.50 ng x g(-1), nd to 6 461.80 ng x g(-1) and 461.70 to 8 740.80 ng x g(-1), respectively. Concentrations of detected toluene (4 619.50-7 234.30 ng x g(-1)) and ethylbenzene (364.60-7 944.60 ng x g(-1)) had exceeded the Canadian guidelines for industrial land (370 ng x g(-1) and 82 ng x g(-1)), and concentration of xylene (19 799.40 ng x g(-1)) in dust in production area of Plant A was larger than the Dutch soil intervention value (17 000 ng x g(-1)). While concentrationsn of BTEX around Plant A (Region I ) and Plant B and C (Region II) ranged from nd to 645.81 ng x g(-1), and nd to 309.13 ng x g(-1), respectively, which were below the Canadian guidelines for agricultural land. The non-carcinogenic risk of BTEX in Plant A (2.90E-06 -1.32E-04), B (nd -4.30E-05) and C (1.29E-06 -5.64E-05) were all below 1, which suggested that no obvious health risk existed in each plant. The non-carcinogenic risks in Region I (nd -2.02E-06) and Region II (nd -1.10E-06) were below than 1, and also lower than those in factories. High risk areas were mainly concentrated in the downwind, moreover, soils around villages and towns were also with higher risk. In conclusion, soils and dusts in each factory had been polluted and the quality of agricultural land had been partly deteriorated. Finally, environmental management and occupational protection countermeasures were proposed based on the research results.
authors.forename: Bing
authors.initials: B
authors.lastname: Tan
authors.forename: Tie-Yu
authors.initials: TY
authors.lastname: Wang
authors.forename: Qi-Feng
authors.initials: QF
authors.lastname: Li
authors.forename: Hai-Yan
authors.initials: HY
authors.lastname: Zhang
authors.forename: Bo
authors.initials: B
authors.lastname: Pang
authors.forename: Zhao-Yun
authors.initials: ZY
authors.lastname: Zhu
authors.forename: Dao-Han
authors.initials: DH
authors.lastname: Wang
authors.forename: Yong-Long
authors.initials: YL
authors.lastname: Lü
mesh_terms: D000383:Agriculture; D001555:Benzene Derivatives / Q000032:analysis; D002681:China; D002947:Cities; D004391:Dust / Q000032:analysis; D004784:Environmental Monitoring; D004787:Environmental Pollution / Q000009:adverse effects*; D008401:Gas Chromatography-Mass Spectrometry; D007221:Industry; D010573:Pesticide Residues / Q000032:analysis* / Q000592:standards; D018570:Risk Assessment; D012987:Soil / Q000737:chemistry; D012989:Soil Pollutants / Q000032:analysis*; D014050:Toluene / Q000032:analysis; D014992:Xylenes / Q000032:analysis
chemical_list: D001555:Benzene Derivatives; D004391:Dust; D010573:Pesticide Residues; D012987:Soil; D012989:Soil Pollutants; D014992:Xylenes; D014050:Toluene; C004912:ethylbenzene