Combined effects of titanium dioxide and humic acid on the bioaccumulation of cadmium in Zebrafish
Combined effects of titanium dioxide and humic acid on the bioaccumulation of cadmium in Zebrafish
复制标题
二氧化钛和腐植酸对斑马鱼镉生物富集的联合影响
DOI：
10.1016/j.envpol.2011.02.011
复制
发表时间：
2011-05-01
影响因子：
8.9
通讯作者：
Yin, Daqiang
中科院分区：
文献类型：
--
作者：
Hu, Xialin;Chen, Qiqing;Yin, Daqiang
研究了纳米二氧化钛(TiO2)与腐植酸(HA)复合作用对斑马鱼体内镉(Cd)积累的影响。平衡Cd积累的实验数据表明，只有溶解Cd有效地促进了Cd在HA溶液中的生物积累，而溶解Cd和与TiO2键结合的Cd都在TiO2中积累，这可能是由于结合在TiO2中的Cd被额外的肠道吸收所致。Cd在混合体系中的平衡生物积累量与相应的HA溶液相当，但显著低于相应的TiO2溶液(n=3，p<；0.05)。水体中HA或TiO2(5~20 mg L~(-1))的存在使Cd的吸收速率常数略有增加，而HA和TiO(2)的组合则降低了Cd的吸收速率常数。(C)2011爱思唯尔有限公司。保留所有权利。
The combined effects of titanium dioxide (TiO(2)) nanoparticles and humic acid (HA) on the bioaccumulation of cadmium (Cd) in Zebrafish were investigated. Experimental data on the equilibrium Cd bioaccumulation suggest that only the dissolved Cd effectively contributed to Cd bioaccumulation in HA solutions whereas both the dissolved and TiO(2) associated Cd were accumulated in TiO(2) or the mixture of HA and TiO(2) solutions, due likely to the additional intestine uptake of the TiO(2)-bound Cd. The equilibrium Cd bioaccumulation in the mixed system was comparable to that in the corresponding HA solutions, and significantly lower than that in the corresponding TiO(2) solutions (n = 3, p < 0.05). The presence of either HA or TiO(2) (5-20 mg L(-1)) in water slightly increased the uptake rate constants of Cd bioaccumulation whereas combining HA and TiO(2) reduced the uptake rate constants. (C) 2011 Elsevier Ltd. All rights reserved.