成都平原社会加油站地下储油罐渗漏有机污染物监测

CHARACTERISTICS OF POLLUTANTS FROM UNDERGROUND STORAGE TANK LEAKAGE IN SOCIAL GAS STATION IN CHENGDU PLAIN

采用分层筛选法对成都平原社会加油站储油罐渗漏的有机污染物进行了筛选。参照国内外研究及成都平原社会加油站自身的特点,初步筛选TPH、PAHs、BETX、MTBE、1,2-DCA和EDB为特征污染物。以有机物检出率和含量为首要原则,其次根据污染物的特性,拟定TPH、PAHs和BETX为监测过程中必选的特征污染物指标,并建议在加油站地下储罐系统渗漏污染物监测过程中重视该类污染物,定期跟踪监测;MTBE为选测指标;建议成都平原建成20年以上的社会加油站选取1,2-DCA和EDB为必测指标。

The leaky organic pollutants from underground storage tank in social gas station in Chengdu Plain were screened by stratified filter method. Based on the characteristic of Chengdu Plain and earlier research status, TPH, PAHs, BETX, MTBE, 1,2-DCA and EDB were preliminarily selected as the characteristic pollutants. Based on the detection rate and content of each pollutant firstly, and the features of each pollutant secondly, TPH,PAHs and BETX were chosen as the compulsory indictors in monitoring, and suggested to be focused on periodically when monitoring underground storage tank leakage ; MTBE could be taken as the optional indicator; 1,2-DCA and EDB as compulsory indictors in monitoring social gas station built more than 20 years in Chengdu Plain.