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[1]袁伟,谢翼飞,李旭东,等.生物硫铁复合材料对Cr(VI)污染水体中斑马鱼的保护作用[J].应用与环境生物学报,2017,23(05):886-891.[doi: 10.3724/SP.J.1145.2016.12007]
 YUAN Wei,,et al.Protective effect of biological iron sulfide composites against chromium (VI) pollution in zebrafish[J].Chinese Journal of Applied & Environmental Biology,2017,23(05):886-891.[doi: 10.3724/SP.J.1145.2016.12007]
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生物硫铁复合材料对Cr(VI)污染水体中斑马鱼的保护作用()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
23卷
期数:
2017年05期
页码:
886-891
栏目:
研究论文
出版日期:
2017-10-25

文章信息/Info

Title:
Protective effect of biological iron sulfide composites against chromium (VI) pollution in zebrafish
作者:
袁伟谢翼飞李旭东兰书焕梁雅洁
1中国科学院成都生物研究所 成都 610041 2中国科学院大学 北京 100049 3中国科学院环境与应用微生物重点实验室 成都 610041
Author(s):
YUAN Wei1 2 3 XIE Yifei1 3** LI Xudong1 3 LAN Shuhuan1 3 & LIANG Yajie1 2 3
1 Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China 2 University of Chinese Academy of Sciences, Beijing 100049, China 3 Key Laboratory of Environmental and Applied Microbiology, Chinese Academy of Sciences, Chengdu 610041, China
关键词:
重金属污染生物硫铁Cr6+斑马鱼保护作用
Keywords:
heavy metal pollution biological iron sulfide Cr6+ zebrafish protective effect
分类号:
X174:X52
DOI:
10.3724/SP.J.1145.2016.12007
摘要:
目前铬污染已经成为世界性的环境问题. 为探究生物硫铁复合材料(生物硫铁,BISC)在Cr6+污染水体中对鱼类的保护作用,以斑马鱼为实验载体,在测定Cr6+对斑马鱼的半数致死浓度(LC50)的基础上,研究生物硫铁对Cr6+污染水体的处理效果,以及生物硫铁投加比(生物硫铁与Cr6+的摩尔浓度之比)、投加时间和水体pH对Cr6+污染水体中斑马鱼保护作用的影响. 结果显示,在79.30 mg/L(24 h-LC50)Cr6+污染水体(pH = 6.98)中,生物硫铁的投加能够快速降低水体Cr6+的浓度. 当生物硫铁投加比达到3时能将Cr6+快速去除,15 min后Cr6+去除率达到84.01%,96 h后达到99.99%. 斑马鱼存活率随生物硫铁投加比的增加和投加时间的减少而增大,最佳投加比为0.5;最佳投加时间为0-4 h,此时能将斑马鱼存活率提高90%以上,24 h时投加,作用96 h后亦可使斑马鱼存活率提高约3倍. 在pH 6-9内,生物硫铁的投加可显著提高斑马鱼的存活率,且对斑马鱼的保护作用随pH降低而逐渐增强. 本研究表明生物硫铁对Cr6+污染水体中的斑马鱼保护效果显著,在Cr6+突发污染治理方面具有广阔的应用前景. (图7 表1 参27)
Abstract:
Chromium pollution has become a worldwide environmental problem. This paper reports our studies of the feasibility and effect of using biological iron sulfide composites (BISC) to protect Cr6+-exposed fish, aimed at Cr6+ polluted water. After determining the median lethal dose (LC50) of Cr6+ in zebrafish, we studied the treatment effect of BISC on soluble Cr6+. Furthermore, we studied the effect of dosing ratio and time of BISC and pH of the water on the protection of zebrafish in Cr6+ polluted water. The results showed that in the 79.30 mg/L (24 h-LC50) Cr6+-polluted water (natural pH = 6.98), BISC treatment apparently reduced the concentration of soluble Cr6+. When the dosing ratio of BISC was 3, Cr6+ was removed quickly, and the maximum removal ratios were achieved, which were 81.85% in 15 min and 99.99% in 96 h. The survival rate of zebrafish increased in a dosing ratio-dependent manner while it reduced in a dosing time-dependent manner. The optimal dosing ratio of BISC was 0.5 and the optimal dosing time was 0–4 h, which increased the survival ratio of the zebrafish by more than 90%. In addition, BISC dosed at 24 h, increased the survival ratio of zebrafish to three times of the normal ratio after 96 h. In the Cr6+-polluted water with a pH range of 6–9, BISC apparently protected the zebrafish and increased their survival ratio. Moreover, the protective effect of BISC was enhanced with the reduction in pH. Therefore, BISC significantly protected the zebrafish in Cr6+-polluted water, suggesting its wide application potential in Cr6+ pollution emergencies.

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更新日期/Last Update: 2017-10-25