24小时热门版块排行榜

返回列表

当前主题已经存档。

liuruiphd

木虫 (著名写手)

应助: 6 (幼儿园)
金币: 2226
散金: 1041
红花: 2
帖子: 1299
在线: 232.5小时
虫号: 514634
注册: 2008-02-29
专业: 质谱分析

[交流] 【资源】Nature nanotechnology 上关于纳米材料生态风险的文章（AOP）

Transfer of gold nanoparticles from the water column to the estuarine food web
http://www.nature.com/nnano/jour ... nnano.2009.157.html

Within the next five years the manufacture of large quantities of nanomaterials may lead to unintended contamination of terrestrial and aquatic ecosystems1. The unique physical, chemical and electronic properties of nanomaterials allow new modes of interaction with environmental systems that can have unexpected impacts2, 3. Here, we show that gold nanorods can readily pass from the water column to the marine food web in three laboratory-constructed estuarine mesocosms containing sea water, sediment, sea grass, microbes, biofilms, snails, clams, shrimp and fish. A single dose of gold nanorods (65 nm length 15 nm diameter) was added to each mesocosm and their distribution in the aqueous and sediment phases monitored over 12 days. Nanorods partitioned between biofilms, sediments, plants, animals and sea water with a recovery of 84.4%. Clams and biofilms accumulated the most nanoparticles on a per mass basis, suggesting that gold nanorods can readily pass from the water column to the marine food web.
http://www.namipan.com/d/Transfe ... 6ec92c3c7ac4e2c0700

[ Last edited by wdwsnnu on 2009-7-4 at 18:12 ]

回复此楼