摘要
采用网格法布点 ,并参照美国 EPA的采样和分析方法 ,调查了某润滑油添加剂厂区不同深度土壤中总石油烃 ( TPH)、挥发性有机物 ( VOC)及半挥发性有机物 ( SVOC)的分布特征 ,以作为开展风险评价和采取补救措施的依据。结果表明 ,该厂区的有机污染是局部的和有特征性的 ;土壤污染带主要位于 2 m以上渗透性良好的人工填土层 ,污染物主要来自各类储罐的泄漏和污水隔油池的渗漏 ;柴油范围的有机物 ( DRO)及润滑油范围的有机物( ORO)的含量超过 1 0 g/kg的区域分别占厂区面积的 2 .0 %和 1 .5% ;98.4 %的目标 VOC及 96.2 %的目标SVOC检出率不足 2 5% ;92 .1 %点位的总 VOC低于 1 0 0 mg/kg,89.4 %点位的总 SVOC低于 50 mg/kg;检出浓度较高的目标 VOC和目标 SVOC分别是苯系物、多环芳烃、苯酚类及邻苯二甲酸酯类化合物 ;除一个点位的一个深度土样苯并 ( a)芘超过 HJ/T2 5-1 999土壤基准 直接接触 1 .4倍外 ,其它均不超标 ;推测定性 VOC或 SVOC的估算浓度高于目标 VOC或
The concentration distributions of TPH, volatile organic compounds(VOC) and semi volatile organic compounds(SVOC) in different depth of soil at a lubricant additives plant site were investigated for conducting a risk assessment and remediation research. Locations of soil boring were selected based on grid location arranged method. Sampling and analysis were performed according to EPA method. Results indicated that the organic contamination of the site was limited and characteristic. The contaminated soil plumes were mainly located in the relatively high permeability of artificially filling soil with a depth of about 2 meters. The majority of contaminants was found to come from the leakage of various kinds of storage tanks and oil water separators. The area in which DRO and ORO concentration exceeded 10 g/kg accounted for 2.0% and 1.5% of the site area, respectively. The detection frequency for 98.4% of target VOC and 96.2% of target SVOC were below 25%. Sampling locations with total target VOC concentration below 100 mg/kg and total target SVOC concentration below 50 mg/kg accounted for 92.1% and 89.4%, respectively. Higher concentrations of target VOC and SVOC were found for aromatics, PAH, phenolic compounds and phthalates. Only one soil sample was detected for benzo pyrene to exceed direct contact values involved in environmental quality risk assessment criteria for soil at manufacturing facilities by 1.4 times. The estimated concentrations of tentatively identified VOC and SVOC were higher than the detected concentrations of target VOC and SVOC.
出处
《石油学报（石油加工）》
EI
CAS
CSCD
北大核心
2001年第4期87-96,共10页
Acta Petrolei Sinica(Petroleum Processing Section)
