中国沿海三省主要饮用水源有机物监测

采用固相萃取、吹扫捕集和气相色谱-质谱联用仪(GC-MS)对江苏、浙江、山东省的21个主要地表饮用水源、126份水样中的25种VOCs、38种SVOCs进行定量检测。结果有19种VOCs、10种SVOCs至少在一个水源地多次被检出,其中挥发性氯代烃、苯系物、氯代苯类、酚类、硝基苯类、酞酸酯类、农药为中国或美国环境保护局提出的"水中优先控制污染物",最高检出量为27.79μg/L。三省主要地表水受到有机物轻度污染,水体中VOCs、SVOCs含量尚未超过《地表水环境质量标准》(GB 3838-2002)和《生活饮用水卫生标准》(GB 5749-2006)限值,工业废水排放及农田雨水径流是地表水有机物的重要来源。

Monitor the Organic Compounds of Main Source of Drinking Water in Three Coastal Province of China

Water samples collected from the surface water of the 21 main source of drinking water in Jiangsu,Zhejiang and Shandong provinces of China were tested for 25 items of VOCs and 38 items SVOCs,using the solid extraction(SPE) and purge and trap(P&T) and gas chromatography-mass spectrometry(GC-MS) instrument.The results shows there were 19 items of VOCs and 10 items of SVOCs was detected several times in at least one source of drinking water.126 samples from 21sampling sites were found to have pollutes of organics compounds in the range of less than MDL to 27.79μg/L.Including volatile chlorinated hydrocarbons(chloroform,carbon tetrachloride,1,2-dichloroethane,trichloroethene,tetrachloroethene),BTEX(benzene,toluene,xylene,m-xylene,p-xylene),chlorinated benzenes(chlorobenzene,1,4-dichlorobenzene,1,2-dichlorobenzene),phenols(2,4-dichlorophenol,2,4,6-trichloro phenol,pentachlorophenol),nitrobenzene(nitrobenzene,2,4,6-trinitrotoluene),phthalate esters phthalate(2-ethylhexyl) ester],pesticides(dimethoate,atrazine) et al,total 21 kinds organic compounds were classified "priority control pollutants in water" by China or the U.S.Environmental Protection Agency’s.The mainly surface of drinking water in the 3 provinces were light polluted by organic.The VOCs,SVOCs concentration were not more than limits of "Surface Water Environment Quality Standard" GB 3838-2002 and the "Drinking Water Standards" GB 5749-2006.The industrial wastewater and agricultural runoff were important source of surface water organisms.