가정에서의 수돗물 사용과 관련된 휘발성 염소소독부산물에 대한 흡입노출 평가

초록

Volatile disinfection by-products(DBPs) contained in chlorinated tap water are released into household airduring indoor activities(showering, cooking, dish-washing, etc.) associated with tap water uses and may causeadverse health effects on humans. Twenty seven subjects were recruited and their homes were visited duringthe winter of 2002. Tap water, household air, and exhaled breath samples were collected and analyzed for fivevolatile DBPs (chloroform, bromodichloromethane, dichloroacetonitrile, 1,1-dichloropropanone and 1,1,1-trichloropropanone). Chloroform was a major DBP found in most samples. Tap water chloroform concen-trations were not statistically correlated with its household air concentrations, probably due to individualvariability in indoor activities such as showering, cooking, and dish-washing as well as household ventilation.Correlation of breath chloroform concentration with household air chloroform concentration showed itspossible use as a biomarker of exposure to household air chloroform. Exposure estimates suggested thatinhalation during household stay be a major route of exposure to volatile DBPs and that ingestion of tap waterbe a trivial contributor to the total exposure in Koreans.

키워드