Residues Characteristics of HCHs and DDTs in Soils Under Different Land Utilizations in Fuzhou Region, China
106 soil samples from different land use pattern were collected in Fuzhou and the concentrations of HCHs and DDTs in the soils were determined by GC-uJECD. The concentrations of SHCHs and SDDTs in soils were in the ranges of 0.581~66.9 μg·kg‐1 and 0.782~110 μg·kg‐1 respectively. The residue level of HCHs in different lands was as follows: unused land>paddy field>dry land>grassland>woodland. The highest relative content was α-HCH, β-HCH and 7-HCH in grassland, dry land and woodland, respectively, and the highest was 8-HCH in paddy field and unused land. The residue level of DDTs was as follows: unused land>dry land>paddy field>woodland>grassland. The highest relative content was p, p'-DDD in unused land while p, p'-DDE in the other four soils. Source analysis indicated that new input of lindane might exist in Fuzhou and industrial HCHs input in grassland. Newly input of DDTs might exist in unused land, dry land and woodland while no input of industrial DDTs were found in paddy field and grassland. Little amount use or input of dicofol might exist in dry land, paddy field and unused land.
国家科技期刊平台
NSTL
万方数据
维普
