摘要
研究了1 1 0mAg通过海水途径和食物途径在牡蛎中的积累和分布。结果表明 ,牡蛎能快速并大量吸收海水中的1 1 0mAg ,在实验期间的 2 3d内 ,整体浓集系数 (CF)最高可达 2 4 67。各软组织中鳃的浓集系数最大 ( 33661 ) ,其余器官的CF按降序排列分别为 :外套膜 ( 2 31 1 9) ,>水管( 2 1 81 8) ,剩余部分 ( 1 7685 ) ,>闭壳肌 ( 991 5 ) ,壳的CF也高达 1 89。投喂标记扁藻的实验结果表明 ,牡蛎也能通过食物途径吸收环境中的1 1 0mAg ,投喂 2d后 ,仍有超过 80 %的放射性1 1 0mAg留在牡蛎体内。1 1 0mAg经食物途径进入牡蛎后 ,主要分布于剩余部分 (含性腺和胃消化腺 )
Uptake and distribution of 110m Ag in oyster, Crassostrea gigas , from ambient water and food were studied. Results showed that the oyster could quickly and largely uptake waterborne 110m Ag, the whole body concentration factor for 110m Ag reached as high as 2467 during 23 days of exposure. The concentration factors in the organs was in order of gill (33661)>mental (23119)>siphon (21818)>remainder part (17685)>adductor (9915) >shell (189). The oyster could also uptake 110m Ag from the labeled Platymonas subcordiformis , a marine unicell algae, with a retention rate of more than 80% after 2 days of feeding.
出处
《核农学报》
CAS
CSCD
北大核心
2003年第5期388-391,共4页
Journal of Nuclear Agricultural Sciences
基金
广东省重点科技攻关项目
广东省环保局资助项目
