science-softCon uv/vis+ photochemistry database;	www.photochemistry.org; (C) science-softCon 2019

Substance: methyl parathion				Other Names: parathion methyl; phosphorothioic acid, o,o-dimethyl-o-p-nitrophenyl ester

Formula: C8H10NO5PS					CAS-No.: 298-00-0

Study: photolysis, quantum yields, molar extinction coefficients

                
Authors: H.B. Wan, M.K. Wong, C.Y. Mok

Title: Comparative Study on the Quantum Yields of Direct Photolysis of Organophosphorus Pesticides in Aqueous Solution

Journal/Source: J. Agric. Food Chem., 42 (11), 2625-2630, (1994); DOI: 10.1021/jf00047a046


Data: table

Energy/Wavelength range: 254 nm; 313 nm

Resolution: 

Temperature: 298 K

Temperature dependence: no

Pressure/Concentration: 

Phase: diluted in deionized and distilled water with a pH at 5.6 or with water plus 20% methanol to 10-20 mg L^-1.

pH: 5.6


Comments: The quantum yields for direct  photolysis of 16 organophosphorus pesticides and their phenolic products in aqueous solutions 
were determined at 254 and 313 nm. 

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