摘要
采用毛细管电子捕获气相色谱(GC-ECD)法检测了长江宜昌江段捕获的野生园口铜鱼(Coreius guichenoti)和野生中华鲟(Acipenser sinensis)体内六六六(HCH)、滴滴涕(DDT)的残留量。结果表明,1～5龄园口铜鱼肌肉、脂肪和肝脏组织中,HCHs(HCHs=α-HCH+β-HCH+γ-HCH+δ-HCH)残留量分别为2.3～5.9ng·g-1、4.2～15.1ng·g-1和9.5～38.7ng·g-1;DDTs(DDTs=p,p′-DDE+o,p′-DDT+p,p′-DDD+p,p′-DDT)分别为22.4～37.1ng·g-1、102.3～173.8ng·g-1和181.1～410.0ng·g-1。中华鲟肌肉组织和卵中,HCHs分别为5.2和15.8ng·g-1,DDTs分别为70.3和521.7ng·g-1。在HCHs中,γ-HCH为主要检出物,占HCHs的73.3%;p,p′-DDE是鱼体中DDT的主要存在形式,占DDTs的67.7%。中华鲟精液中未检出HCHs、DDTs。
Gas chromatography-electron capture detection （GC-ECD） was used for determining HCH and DDT residues in wild specimens of Bronze gudgeon（Coreius guichenoti） and Chinese sturgeon （Acipenser sinensis） found in the Yichang reaches of Yangtze River. The HCHs （ HCHs=α-HCH＋β-HCH＋γ-HCH＋δ-HCH ） residues in the muscles, fat tissue and liver of 1- to 5-year-old C. guichenoti were 2.3-5.9 ng·g^-1, 4.2-15.1 ng·g^-1, and 9.5-38.7 ng·g^-1, respectively, while those of DDTs（DDTs =p,p＇-DDE＋o,p＇-DDT＋p,p＇-DDD＋p,p＇-DDT）residues were 22.4-37.1 ng·g^-1, 102.3-173.8 ng·g^-1, and 181.1-410.0 ng·g^-1, respectively. The HCHs residues in the muscles and toes ofA. sinensis were. 5.2 ng·g^-1 and 15.8 ng·g^-1, respectively, while those of DDTs residues were 70.3 ng·g^-1 and 521.7 ng·g^-1, respectively. The γ-HCH was the major component of HCHs, aecounting for 73.3% of HCHs residues, while p,p＇-DDE was the most abundant torm of DDT, accounting for 67.7% of the DDTs residues. The HCHs and DDTs were not detected in the mih of Chinese sturgeon. Determining DDT residues in the roes of Chinese sturgeon and analyzing the life history of this species suggested that the high concentration of the accumulated DDT might be due to the marine environment rather than the water of Yangtze River.
出处
《农业环境科学学报》
CAS
CSCD
北大核心
2008年第6期2434-2439,共6页
Journal of Agro-Environment Science
基金
中国水产科学研究院淡水生态与健康养殖重点开放实验室资助(EFA20040109)
国家自然科学基金重大项目(30490231)
科技部公益项目(2005DIB3J5025)
关键词
长江宜昌江段
铜鱼
中华鲟
HCH
DDT
Yangtze River
Coreius guichenoti： Acipenser sinensis
HCH
DDT
