闽西北水稻土有机氯农药残留特征  

Residues Characteristics of Organochlorine Pesticides in the Soil of Rice in FuJian of Northwest

作　　者：林祖斌[1] 唐莉娜[2] 陈建斌[3] 方玲[4] 陈德坤[4] 兰爱金[4] 

机构地区：[1]福建省烟草公司,福州350003 [2]福建省烟草专卖局烟草农业科学研究所,福州350003 [3]三明市环保局,福建三明365000 [4]福建农林大学,福州350003

出　　处：《中国农学通报》2013年第23期158-160,共3页Chinese Agricultural Science Bulletin

基　　金：国家烟草专卖局重大科技专项"清香型特色优质烟叶开发"[110201101003(Ts-03)];福建省烟草公司科技项目"福建清香型烟叶适宜区的生态基础研究"[闽烟合同(2010)036号]

摘　　要：采用气相色谱对福建闽西北地区水稻土中有机氯农药（HCHS、DDTS）残留量进行了测定,探讨其残留特征。结果表明：调查区土壤中HCHS和DDTS残留量分别为0.41~9.61μg/kg和6.51~469.50μg/kg,土壤HCHS残留量均低于土壤环境质量标准（GB15618—1995）的一级标准限量值（50μg/kg）,但有23.1%的样点土壤OCPS残留总量高于50μg/kg。OCPS主要残留物是DDTS。土壤中HCHS异构体的残留特征是β-HCH〉r-HCH〉α-HCH〉δ-HCH,其中HCHS以β-HCH残留最高;土壤DDTS残留特征是pp＇-DDT〉op＇-DDT〉pp＇-DDD〉pp＇-DDE,土壤DDT残留以pp＇-DDT为主,且pp＇-DDT/（DDD＋DDE）大于1,说明DDTS可能有新的污染输入。The residue characteristics of organochlorine pesticides （OCPS） were studied under the soil of rice. In the study, hexachlorocyclohexane （HCH S ） and dichlorodiphenyl trichloroethane （DDT S ） were analyzed using gas chromatography equipped with ECD detector. The results showed that HCH S and DDT S were found widely in all samples and with a range of 0.41-9.6 1μg/kg and 6.51-469.50 μg/kg respectively. The content of HCH S was much lower than the soil environmental quality standard （GB 15618-1995）, and it limits the quantity being worth 50 μg/kg, but 76.9% of samples had a total DDT S residue of less than 50 μg/kg. And the DDT S , which was the main components in residues of organochlorine pesticides, took over 96.2% of the total. The residual characteristics of HCH S isomers in the soil was β-HCHγ-HCHα-HCHδ-HCH, β-HCH concentration was higher than other HCH S isomers. The residual characteristics of DDT S isomers in the soil was pp ＇ -DDT op ＇ -DDTpp ＇ -DDEpp ＇ -DDD, and the pp ＇ -DDT was the main components in residues of DDT S , pp ＇ -DDT/ （DDD ＋ DDE） value in soil was greater than one, this suggested that the new DDT S were input in the soil of rice.

关 键 词：水稻土 有机氯农药 残留量 特征 

分 类 号：X131.1[环境科学与工程—环境科学] S62[农业科学—园艺学]