A Novel Microbial Biosensor for Toxicity Test

Xiao Hui Wang; Hui Ling Wang; Zhi Hui Bai

doi:10.4028/www.scientific.net/AMR.726-731.1204

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The Analysis of the Evaluation of the Marine Nature Reserve-Ecosystem Services
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Zoning Compliance Control Method Applied in Regional Planning of the Marine Environment Capacity Calculation
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A Novel Microbial Biosensor for Toxicity Test
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Concentration and Assessment of Heavy Metals in Benthos in Lianyungang Area
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Evaluation of Physical-Chemical Characteristics and Tillage Suitability at Reclaimed Field in Arid Year
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The Application of Dating Shallow Groundwater with Sulfur Hexafluoride (SF₆) in Groundwater Vulnerability Assessment in the Core Area of Daqing Oilfield
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The Distribution of Diatoms in Guangxi Section of West River
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 726-731A Novel Microbial Biosensor for Toxicity Test

A Novel Microbial Biosensor for Toxicity Test

Abstract:

A mercury chloride sensitive Bacillus sp. X4 as a toxicity recognition element was isolated from soil. A novel microbial biosensor was developed based on the isolated X4 in combination with a dissolved oxygen electrode for the analysis of toxicity in wastewater. Optimal response of the biosensor was obtained at pH 7.0 - 7.5 and 30 - 35 °C with a detection linearity over the range 0.10 - 1.97 mg·L^-1 of HgCl₂. The repeatability of the sensor response were found to be 1.8%. Preliminary application of the biosensor in pharmacy wastewaters has demonstrated their effectiveness. Toxicity values produced with this biosensor for pharmacy wastewaters correlated well with those determined by standard method.