Photolysis of Metribuzin in Water under Direct Sunlight - Identification of Photo-transformation Products by LC-MS-MS Electrospray Tandem Mass Spectrometry and Impact on Aquatic Species (Pseudokirchneriella subcapitata)
Journal Title: International Journal of Research in Chemistry and Environment (IJRCE) - Year 2012, Vol 2, Issue 4
Abstract
Photolysis of a systemic herbicide metribuzin was studied in Milli-Q water and in three different aqueous buffer solutions of pH 5.0, 7.0 and pH 9.0. A commercial formulation of the herbicide having the active strength 14% EC w/w was spiked and exposed under direct sunlight in three different aqueous buffer solutions at 1.0 μg mL-1 and 2.0 μg mL-1 levels. Aliquots of water samples were collected in predetermined intervals and analysed by a validated High Performance Liquid Chromatography with Ultra Violet detector (HPLC-UV) at a wave length of 230 nm. The method showed recovery 90 + 5% recovery in aqueous buffer solutions. The method has limit of quantification (LOQ) 0.01 μg mL-1. The DT50 and DT90 values were calculated from the dissipation data. The reaction was faster in basic water. The dissipation of metribuzin in water followed first order kinetics. The major photo transformation products in water were identified by liquid chromatography electrospray tandem mass spectrometry (LC-ESI-MS/MS). The impact of residues on the growth of green alga was also studied using Pseudokirchneriella subcapitata.
Authors and Affiliations
Sivanandam Sathiyanarayanan, Velmurugan Pandiselvi, Sornam Ayyappan, Atmakuru Ramesh
Keywords
Related Articles
- EP ID EP125827
- DOI -
- Views 88
- Downloads 0
[b] Application Impact of Coal Fly Ash, and Water Hyacinth on Cultivation of Tomato[/b]
[i]Few pot and field experiments were conducted to study the effect of levels of coal fly ash (CFA) which is a byproduct of Kota Super Thermal Power Station, on physicochemical properties of soil and the yield para...
A Comparative Study on the interaction of some metal ions with Glutamic Acid and LCysteine as Primary Ligands and Thymine as a Secondary Ligand using Potentiometry in Aqueous Medium
The formation constants of the ternary (1:1:1) and quaternary (1:1:1:1) complexes of PbII, HgII , CdII, ZnII, CoII, and NiII with Glutamic acid / L-Cysteine as primary ligand and Thymine as secondary ligand have bee...
Isolation and Identification of Bacterial Culture for Azo Dye Degrading Capability
Synthetic dyes are extensively used in textile dyeing, paper, printing, color, photography, pharmaceutics, cosmetics and other industries. Among these, azo dyes represent the largest and most versatile class of synth...
Kinetic and Equilibrium Studies of the adsorption of Mercury(II) ions from Aqueous Solution using Kaolinite and Metakaolinite clays from Southern Cameroon[/b][b][/b]
[i] The elimination of mercury from aqueous solution by kaolinite (Ka1) and metakaolinite (Metaka1) by adsorption using batch mode was studied. The study highlighted several parameters, such as the contact time, mas...
Preparation and Characterization of Granular Activated Carbon from Corn Cob by KOH Activation
In the present work studies related to the production of granular activated carbon, by using agricultural waste corn cob granules (dried and sieved to 12x16 mesh size),as a precursor material and potassium hydroxide...