六六六在饲养鸡体内的残留水平  

Residue Level of HCHs in Chicken

作　　者：周东旭[1] 礼晓[1] 杨意峰[1] 岳大攀[1] 刘志刚[1] 张骞[1] 关天嘉[1] 杨宇[1] 王文涛[1] 曹军[1] 陶澍[1] 

机构地区：[1]北京大学城市与环境学院地表过程分析与模拟教育部重点实验室,北京100871

出　　处：《环境科学》2008年第1期207-211,共5页Environmental Science

基　　金：国家自然科学基金项目(40332015);国家重点基础研究发展规划(973)项目(2003CB415004)

摘　　要：用气相色谱-电子捕获器法测定了北京郊区某养鸡场不同生长期的饲养鸡的肌肉、表皮、肝脏、胃、心脏以及鸡蛋、饲料和粪便中HCH的残留浓度.分析结果表明,饲养鸡体内肌肉、表皮、肝脏、胃和心脏的∑HCH湿重浓度分别为(0.35±0.37)、(3.91±2.52)、(1.78±1.26)、(1.00±0.85)和(1.35±0.75)ng/g,脂标化浓度分别为(64.3±171)(、19.6±7.33)(、64.9±27.2)、(74.5±74.1)和(17.8±4.42)ng/g,远低于国家《食品中农药残留最大限量》标准.肝脏∑HCH脂标化浓度显著高于其他器官,而未观察到HCH各异构体残留水平在肌肉、表皮、心脏与胃之间具有显著差别.除饲料、胃和粪便内各HCH异构体成分中以-δHCH为主外,-βHCH是鸡体内与鸡蛋中残留最高的异构体.-βHCH在鸡体内各器官都体现出富集的特性,肝脏对除-δHCH以外的3种异构体也都体现出显著的富集特性.对成年绿柴鸡(雄)和绿壳蛋鸡(雌)样品中HCHs残留水平的对比分析显示,雄性较雌性具有更强的HCHs富集能力.The concentrations of hexachlorocyelohexane isomers （HCHs） in muscle, skin, liver, stomach, heart, eggs, feed and feces of chicken from a poultry farm were determined by GC-ECD. The residue level of total HCHs （∑HCHs） in muscle, skin, liver, stomach and heart were （0.35±0.37）, （3.91 ±2.52）, （1.78±1.26）, （1.00±0.85）, （1.35±0.75） ng/g （wet weight） while the lipid normalized concentrations were （64.3 ± 171）, （19.6 ± 7.33）, （64.9 ± 27.2）, （74.5 ± 74.1 ）, （17.8 ± 4.42） ng/g, respectively, which are far lower than the Maximum Residue Limits for Food in China. Among all tissue samples, the highest lipid-normalized concentration was observed in the liver and no significant differences were observed among other organs, δ-HCH was the predominant isomer in chicken feed, stomach and faces, while β-HCH owned the highest concentration in all other samples, β-HCH was enriched in muscle, skin, liver, stomach and heart, while α-HCH and δ-HCH were also enriched in liver. Significant difference was revealed between male and female chicken in terms of bioaccumulation, indicating higher bioaccumulation ability of the former.

关 键 词：六六六 饲养鸡 内脏分布 雌雄差异 

分 类 号：X171.5[环境科学与工程—环境科学]