Relationships between pesticides and organic carbon fractions in sediments of the Danshui River estuary and adjacent coastal areas of Taiwan.
In order to understand the fate of pesticides in marine environments, concentrations of pesticides and different carbonaceous fractions were determined for surface sediments in the Danshui River and nearby coastal areas of Taiwan. The major compounds detected were tetrachlorobenzene, HCHs, chlordane, aldrin, DDDs, DDEs and DDTs. Total concentrations of pesticides in the sediments ranged from not detectable to 23 ng g(-1), with the maximum value detected near the discharge point of the marine outfall from the Pali sewage treatment plant. These results confirm that pesticides persist in estuarine and nearby coastal environments of the Danshui River well after their ban. Concentrations of total pesticides significantly correlate with concentrations of total organic carbon and black carbon in these sediments, suggesting that total organic carbon and black carbon regulate the distribution of trace organic pollutants in fluvial and coastal marine sediments.
Hung
Chin-Chang
CC
Institute of Marine Environmental Chemistry and Ecology, National Taiwan Ocean University, 2 Pei-Ning Road, Keelung 202, Taiwan, ROC. cchung@mail.ntou.edu.tw
Gong
Gwo-Ching
GC
Chen
Hung-Yu
HY
Hsieh
Hwey-Lian
HL
Santschi
Peter H
PH
Wade
Terry L
TL
Sericano
Jose L
JL
D000452:Aldrin / Q000032:analysis; D002244:Carbon / Q000032:analysis; D002706:Chlordan / Q000032:analysis; D002722:Chlorobenzenes / Q000032:analysis; D003634:DDT / Q000032:analysis; D003633:Dichlorodiphenyl Dichloroethylene / Q000032:analysis; D003632:Dichlorodiphenyldichloroethane / Q000032:analysis; D004784:Environmental Monitoring / Q000379:methods; D004785:Environmental Pollutants / Q000032:analysis*; D019015:Geologic Sediments; D006812:Humic Substances / Q000032:analysis*; D006843:Hydrocarbons, Chlorinated / Q000032:analysis; D007306:Insecticides / Q000032:analysis; D010575:Pesticides / Q000032:analysis*; D045483:Rivers; D013624:Taiwan
D002722:Chlorobenzenes; D004785:Environmental Pollutants; D006812:Humic Substances; D006843:Hydrocarbons, Chlorinated; D007306:Insecticides; D010575:Pesticides; D002706:Chlordan; D003633:Dichlorodiphenyl Dichloroethylene; D002244:Carbon; D003634:DDT; D000452:Aldrin; D003632:Dichlorodiphenyldichloroethane