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- W2353888914 abstract "Objective:The study was conducted to find out the contents of organic chlorine compound in soil of Zhoushan area;to probe the difference of area distributes among the contents of organic chlorine compound in soil.Methods: The study was conducted in rural area in Dinghai district of Zhoushan city.Ten towns were sampled for three parts from east,central and west regions in Dinghai district.Seven families were sampled by random sampling technology in each town one kilogram of soil.Isomeric of HCH,DDT and PCBs in samples were detected by gas chromatograph according to method of GB/T5009.19-1996.The amount of total HCH was calculated by summing the Isomeric compounds,total DDT and PCBs were calculated according to the same method.The descriptive analysis was used to describe the distribution of these organic chlorine compounds in east,central and west regions in soil.Results: The results show that 78 soil samples were detected.The positive rate of total HCH in soil samples was 89.74%.The median was 3.46×10-3mg/kg;the positive rate of total DDT was 96.15%.The median was 11.68×10-3mg/kg;the positive rate of total PCBs was 46.15%.The 75quartile was 6.37×10-4mg/kg.By comparison of different regions,the contents of total PCBs in soil samples decreased from east to west region(χ2=26.79,P=0.000);the contents of total DDT in soil samples of central region was higher than east and west regions(χ2=6.85,P=0.032).The proportion of γ-HCH in soil samples in each region was high(east: 57.83%;central: 66.62%;west: 55.55%).Conclusion: HCH,DDT and PCBs exist in soil and rice in Zhoushan area,but the contents of HCH,DDT and PCBs have declined down to the safety level.In contrast with west region,the level of organic chlorine compound pollution in east and central region seems relatively higher.Since the proportion of γ-HCH in soil samples was high in each region,it pointed out that lindane maybe uesd in Zhoushan area." @default.
- W2353888914 created "2016-06-24" @default.
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- W2353888914 date "2010-01-01" @default.
- W2353888914 modified "2023-09-26" @default.
- W2353888914 title "The contents and regional distribution of organic chlorine compound in soil of Zhoushan area" @default.
- W2353888914 hasPublicationYear "2010" @default.
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