낙동강 중권역 대표지점 및 공단 배출수에서의 준휘발성유기화합물(페놀류 및 농약류)분포특성 및 계절적 변동 평가
Occurrence, Seasonal Variation and Distribution Characteristics of Semi-Volatile Organic Pollutants Comprising Phenols and Pesticides from Nakdong River Basin and Wastewater Effluents, Korea
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초록
To assess the levels and distribution patterns of semi-volatile organic pollutants comprising 6 phenols, 3organochlorine pesticides (OCPs), 6 organophosphorus pesticides (OPPs) and 4 other pesticides (diuron, furfural,hexazinone, linuron), we analyzed river water samples collected from Nakdong river basin and effluent samples from five industrial wastewater treatment plants (IWTP). The concentration levels of 6 phenols, 3OCPs, 6 OPPs and 4 other pesticides in the river waters ranged from not detected (ND)~450 ng/L, ND~25.8ng/L, ND~19.2 ng/L and ND~20.7 ng/L, respectively and the levels of those target compounds in effluent were from ND~353 ng/L, ND~4.42 ng/L, ND~12.8 ng/L and ND~10.1 ng/L, respectively. Among 19 target compounds,four compounds (4-nitrophenol, 2-methyl-4,6-dinitrophenol, demeton-O, diuron) showed statistically significant seasonal variations (p<0.001). Phenols were predominant in all samples and showed increasing tendency from upstream to downstream. Though no clear emission sources were identified due to the large variances of sources between sampling points but some relevant occurrence pattern was observed between IWTP effluent and surrounding areas, suggesting potential effect of IWTP on the close regional river basin.
Abstract
To assess the levels and distribution patterns of semi-volatile organic pollutants comprising 6 phenols, 3organochlorine pesticides (OCPs), 6 organophosphorus pesticides (OPPs) and 4 other pesticides (diuron, furfural,hexazinone, linuron), we analyzed river water samples collected from Nakdong river basin and effluent samples from five industrial wastewater treatment plants (IWTP). The concentration levels of 6 phenols, 3OCPs, 6 OPPs and 4 other pesticides in the river waters ranged from not detected (ND)~450 ng/L, ND~25.8ng/L, ND~19.2 ng/L and ND~20.7 ng/L, respectively and the levels of those target compounds in effluent were from ND~353 ng/L, ND~4.42 ng/L, ND~12.8 ng/L and ND~10.1 ng/L, respectively. Among 19 target compounds,four compounds (4-nitrophenol, 2-methyl-4,6-dinitrophenol, demeton-O, diuron) showed statistically significant seasonal variations (p<0.001). Phenols were predominant in all samples and showed increasing tendency from upstream to downstream. Though no clear emission sources were identified due to the large variances of sources between sampling points but some relevant occurrence pattern was observed between IWTP effluent and surrounding areas, suggesting potential effect of IWTP on the close regional river basin.
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