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Creating a Halotolerant Degrader for Efficient Mineralization of p-Nitrophenol-Substituted Organophosphorus Pesticides in High-Saline Wastewater.
Biotechnol Bioeng
January 2025
Department of Biochemistry and Molecular Biology, College of Life Sciences, Nankai University, Tianjin, China.
The bioaugmentation performance is severely reduced in the treatment of high-saline pesticide wastewater because the growth and degradation activity of pesticide degraders are significantly inhibited by high salt concentrations. In this study, a heterologous biodegradation pathway comprising the seven genes mpd/pnpABCDEF responsible for the bioconversion of p-nitrophenol (PNP)-substituted organophosphorus pesticides (OPs) into β-oxoadipate and the genes encoding Vitreoscilla hemoglobin (VHb) and green fluorescent protein (GFP) were integrated into the genome of a salt-tolerant chassis Halomonas cupida J9, to generate a genetically engineered halotolerant degrader J9U-MP. RT-PCR assays demonstrated that the nine exogenous genes are successfully transcribed to mRNA in J9U-MP.
View Article and Find Full Text PDFAnalysis of Pz-1, a promising therapeutic for organophosphorus poisoning from rodent plasma by liquid chromatography-tandem mass spectrometry.
J Pharm Biomed Anal
December 2024
Department of Chemistry, Biochemistry and Physics, South Dakota State University, Box 2202, Brookings, SD 57007, USA. Electronic address:
Organophosphorus (OP) pesticides (e.g., parathion) and nerve agents (e.
View Article and Find Full Text PDFRational design of Boerhavia diffusa derived CoFeO-Carbon dots@Boehmite platform for photocatalysis and ultra trace monitoring of hazardous pesticide and UO ions.
Spectrochim Acta A Mol Biomol Spectrosc
January 2025
Department of Chemistry & Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh 160014, India. Electronic address:
In view of exploiting natural resources for designing of effectual materials in favor of detection and obliteration of water pollutants, a fluorescent nanomaterial (CDBHCF) based on biomass derived carbon dots (CDs) was constructed. The CDs and cobalt ferrite (CF) particles were anchored on boehmite (BH) which served as a support material for CDs. The CDBHCF nanocomposite was prepared via facile hydrothermal treatment for selective recognition of Methyl parathion (MP) pesticide and uranyl ions (UO).
View Article and Find Full Text PDFEvaluation of phosphate insecticides and common herbicides: monitoring and risk assessment in water treatment plant, distribution networks, and underground water wells.
J Water Health
June 2024
Department of Chemistry, Faculty of Sciences, Yasouj University, Yasouj, Iran.
Despite the negative effects that the use of pesticides (such as herbicides and insecticides) have on human health and water resources, a significant portion of the world's agricultural production depends on them. The purpose of this study was to determine selected residual concentrations of pesticides (diazinon, ethion, malathion, alachlor, methyl-parathion, trifluralin, atrazine, chlorpyrifos, and azinphos-methyl) in samples from Shiraz potable water sources. For this purpose, water treatment plant, groundwater wells, treated surface water, and a mixture of groundwater and treated surface water were taken.
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