نتایج جستجو برای: organophosphorus pesticides

تعداد نتایج: 21436  

Journal: :Environmental monitoring and assessment 2003
Irani Mukherjee

This article presents the development of a multiresidue method for the estimation of 30 insecticides, 15 organochlorine insecticides and 6 organophosphorus insecticides, 9 synthetic pyrethriods and 2 herbicides and their quantification in vegetables. The monitoring study indicates that though all the vegetable samples were contaminated with pesticides, only 31% of the samples contained pesticid...

Journal: :Applied and environmental microbiology 1978
A M Cook C G Daughton M Alexander

Bacteria were isolated that could utilize representatives of the following ionic phosphorus-containing breakdown products of organophosphorus pesticides as sole phosphorus sources: dialkyl phosphates, dialkyl phosphorothioates, dialkyl phosphorodithioates, alkyl arylphosphonates, alkyl arylphosphonothioates, and alkyl alkylphosphonates. Utilization of each organophosphorus compound, which was c...

Journal: :RSC advances 2014
Xiude Hua Xiaofeng Liu Haiyan Shi Yanru Wang Hee Joo Kim Shirley J Gee Minghua Wang Fengquan Liu Bruce D Hammock

An enzyme-linked immunosorbent assay (ELISA) was developed to detect organophosphorus pesticides using a phage-borne peptide that was isolated from a cyclic 8-residue peptide phage library. The IC50 values of the phage ELISA ranged from 1.4 to 92.1 μg L-1 for eight organophosphorus pesticides (parathion-methyl, parathion, fenitrothion, cyanophos, EPN, paraoxon-methyl, paraoxon, fenitrooxon). Th...

Journal: :Environment Protection Engineering 2013

Journal: :Agricultural and Biological Chemistry 1965

Journal: :Toxicology and applied pharmacology 2002
Gary B Quistad Susan E Sparks Yoffi Segall Daniel K Nomura John E Casida

Fatty acid amide hydrolase (FAAH) plays an important role in nerve function by regulating the action of endocannabinoids (e.g., anandamide) and hydrolyzing a sleep-inducing factor (oleamide). Several organophosphorus pesticides and related compounds are shown in this study to be more potent in vivo inhibitors of mouse brain FAAH than neuropathy target esterase (NTE), raising the question of the...

Journal: :Food Hygiene and Safety Science (Shokuhin Eiseigaku Zasshi) 1984

1998
Ashok Mulchandani Priti Mulchandani Wilfred Chen

A potentiometric enzyme biosensor for the direct measurement of organophosphate pesticides was developed. The basic element of this enzyme biosensor was a pH electrode modified with an immobilized organophosphorus hydrolase layer formed by cross-linking OPH with bovine serum albumin and glutaraldehyde. Organophosphorus hydrolase catalyzes the hydrolysis of organophosporus pesticides to release ...

2012
Xiude Hua Jifei Yang Limin Wang Qingkui Fang Gaiping Zhang Fengquan Liu

OBJECTIVE Organophosphorus (OP) pesticides are considered hazardous substances because of their high toxicity to nontarget species and their persistence in the environment and agricultural products. Therefore, it is important to develop a rapid, sensitive, and economical method for detecting OP pesticides and their residues in food and the environment. METHODS A broad, selective monoclonal an...

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