Investigation of Organic Chlorine Residues in the Soil of Tea Garden

The organochlorine pesticide residues(HCHs and DDTs) in the organic tea garden soil in Fujian were investigated by GC analysis.The results showed that HCHs and DDTs were detected at different levels among 21 tea garden soils.In addition,the residues total of HCHs was 0.10 μg·kg-1 with β-666 and α-666 as the most residues;the residues total of DDTs was 0.18 μg·kg-1 with pp-dde,pp-ddd and op-ddt as the most residues.Further,the HCHs and DDTs residues in high-altitude tea gardens were more than low-altitude tea gardens significantly and correlated with tea ages negatively,and single pollution index and synthetic pollution indices suggest that BHC and DDT residues are not exceeded and the soil is suitable for tea cultivation.