| ~(35)S-杀虫双在模拟水生生态系统中的生物吸收和消失 |
| |
| 引用本文： | 陈祖义,米春云,成冰.~(35)S-杀虫双在模拟水生生态系统中的生物吸收和消失[J].生态与农村环境学报,1993(1). |
| |
| 作者姓名： | 陈祖义 米春云 成冰 |
| |
| 作者单位： | 南京农业大学，南京农业大学，南京农业大学 南京 210014，南京 210014，南京 210014 |
| |
| 摘 要： | 本文应用模拟生态实验装置和同位素示踪技术研究了~(35)S-杀虫双农药在模拟水生生态系统中的生物吸收和消失。在水—芜萍(Wolffia arrhiza wimm)—草鱼(Ctenopharyngodon idellus)—螺生态系统中,为期20d的蓄积试验表明,芜萍生物积聚率达24.65≥螺(肉1.67)>鱼(肉0.52);鱼体内脏因含未排出的芜萍而其积聚率(4.01)>鳃(1.66)>骨(0.95)>肉(0.52);转入洁水后,鱼体内的~(35)S-杀虫双可因排泄、代谢等原因而消失,残留消失半减期约10d,无生物浓缩。
|
| 关 键 词： | 杀虫双 生物吸收 半减期 |
BIOACCUMULATION AND DISAPPEARANCE OF ~(35)S- DIMEHYPO IN SIMULATED AQUATIC ECOSYSTEM. |
| |
| Chen Zuyi,Mi Chunyun and Cheng Bing.BIOACCUMULATION AND DISAPPEARANCE OF ~(35)S- DIMEHYPO IN SIMULATED AQUATIC ECOSYSTEM.[J].Journal of Ecology and Rural Environment,1993(1). |
| |
| Authors: | Chen Zuyi Mi Chunyun and Cheng Bing |
| |
| Abstract: | The bioacrumulation and disappearance of 35S-dimehypo in simulated aquatic ecosystem were investigated, using simulated ecosystem experimental facilities and radioiso-tope tracer techniques. After the experiment for 20 days ,high absorption by Wolffia arrhiza Wimm was found in the ecosys- tem of water,Wolffia arrhiza Wimm,Ctenopharyngodon in-dellus and snail. The bioaccumulation ratios of Wolffia arrhiza Wimm was 24. 65% , which is much higher than that of snail or fish. The bioaccumulation ratios of fish parts differed, viscera with the remain of Wolff ia arrhizaWimm (4. 01 %)>. gill (1. 66%)>bone (0. 95%)>meat (0. 52%). After the fish were transferred from the contaminated water to clean water, the disappearance of 35 S-dimehypo in the processes of fish excretion and metabolism was also examined. As a result, the residual pesticide disappears with time, with its half life about 10 days. |
| |
| Keywords: | Dimehypo bioaccumulation disappearance simulated aquatic ecosystem |
| 本文献已被 CNKI 等数据库收录！ |
|
