A novel colorimetric biosensor for monitoring and detecting acute toxicity in water

	A novel colorimetric biosensor for monitoring and detecting acute toxicity in water
	Zhai JF ; Yong DM ; Li J ; Dong SJ
刊名	analyst
	2013
卷号	138 期号:2 页码:702-707
关键词	ACTIVATED-SLUDGE PRUSSIAN BLUE NEUTRAL RED ESCHERICHIA-COLI FERRIC PHOSPHATE CELL VIABILITY WASTE-WATER ASSAY IMMOBILIZATION NANOPARTICLES
ISSN号	0003-2654
通讯作者	dong sj
中文摘要	this work presents a new colorimetric microorganism biosensor for monitoring and detecting acute toxicity in water, where prussian blue (pb) is used as the colorimetric indicator and e. coli as the model bacterial. in this biosensor, the electron mediator, ferricyanide, accepts electrons from e. coli during respiration to produce ferrocyanide, which subsequently reacts with ferric ions to yield pb, a famous material with a blue color. since toxicants can inhibit the respiratory activity of e. coli and then reduce the ferrocyanide and consequent pb production, toxicity can be easily detected by measuring the decrease in the production of pb induced by toxicants. three important toxicants, 3,5-dichlorophenol (dcp), as3+, cr6+ are tested and the detection limits are 3.2, 25, and 3.2 ppm, respectively. moreover, we could identify the yellow green to dark green color change by naked eye even at concentrations as low as 12.5 ppm for both dcp and cr6+. subsequently, the acute toxicities of groundwater and south lake water are successfully determined by this sensor. this biosensor is rapid, sensitive and cost-effective, and can thus be regarded as a promising biosensor for giving an early warning of acute water toxicity.
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000312074300042
公开日期	2014-04-18
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/50443]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Zhai JF,Yong DM,Li J,et al. A novel colorimetric biosensor for monitoring and detecting acute toxicity in water[J]. analyst,2013,138(2):702-707.
APA	Zhai JF,Yong DM,Li J,&Dong SJ.(2013).A novel colorimetric biosensor for monitoring and detecting acute toxicity in water.analyst,138(2),702-707.
MLA	Zhai JF,et al."A novel colorimetric biosensor for monitoring and detecting acute toxicity in water".analyst 138.2(2013):702-707.