Concentrations, sources and pollution characteristic of organic pesticide in soil from typical Chinese Bamboo forest

Abstract

Concentrations, pollutant characteristics and sources apportionment of organic pesticides (OPs) of fifty one soils from bamboo forest in Zhejiang province, China were investigated. Ten organochlorine(OCPs), three organophosphorus(OPPs), and one pyrethroids (OPYs) were detected. The detection rate (DR %) ranged from 27.27% to 100%, and descended in the order: OCPs>OPPs>OPYs. Concentrations of all OCPs and OPPs were <150 μg.kg−1, while the concentrations of hexachlorocyclohexane (HCH) and 1,1,1‐trichloro‐2,2‐di(4‐chlorophenyl)ethane (DDT) were <50 μg.kg−1, and no recent usage. However, fenvalerate(FEN) had a concentration of 1227 μg.kg−1, the maximal value of all OPs. OPs residue in soil with pH 3.10 ‐ 4.50 was nearly higher than those of soil with pH 4.51 ‐ 5.90. OCPs residue was positive correlated with soil TOC, while OPPs and OPYs residue were influenced markedly by usage and management intensity. The DR %, peak value and ratio of excess standard for methamidophos (MEA) was 82.35%, 33.62 μg.kg−1 and 82.35%, respectively. The residue levels of MEA accounted for 70.87% of the σ‐OPPs and significantly positively correlated with σ‐OPPs. All results was summarized that OPPs, OPYs and partial of OCPs such as Chlorothalonil (CHL), Dicofol (DIC) was main pollutant and potential to jeopardize the human health, bamboo forest environment and shoot production. © 2016 American Institute of Chemical Engineers Environ Prog, 35: 729–736, 2016