Residues, Sources and Potential Biological Risk of Organochlorine Pesticides in Surface Sediments of Qiandao Lake, China.
Bull Environ Contam Toxicol
; 95(4): 521-4, 2015 Oct.
Article
in En
| MEDLINE
| ID: mdl-25904092
ABSTRACT
Sediment samples were analyzed to comprehensively characterize the concentrations, distribution, possible sources and potential biological risk of organochlorine pesticides in Qiandao Lake, China. Concentrations of sumHCH and sumDDT in sediments ranged from 0.03 to 5.75 ng/g dry weight and not detected to 14.39 ng/g dry weight. The predominant ß-HCH and the α-HCH/γ-HCH ratios indicated that the residues of HCHs were derived not only from historical technical HCH use but also from additional usage of lindane. Ratios of o,p'-DDT/p,p'-DDT and DDD/DDE suggested that both dicofol-type DDT and technical DDT applications may be present in most study areas. Additionally, based on two sediment quality guidelines, γ-HCH, o,p'-DDT and p,p'-DDT could be the main organochlorine pesticides species of ecotoxicological concern in Qiandao Lake.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Pesticides
/
Pesticide Residues
/
Lakes
/
Geologic Sediments
/
Hydrocarbons, Chlorinated
Type of study:
Etiology_studies
/
Risk_factors_studies
Country/Region as subject:
Asia
Language:
En
Journal:
Bull Environ Contam Toxicol
Year:
2015
Type:
Article
Affiliation country:
China