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Environmental and Health Effects of MSMA (Monosodium Salt Methane Arsenic Acid) Application along Louisiana Highways: Executive Summary
The use of MSMA as a grass control herbicide along Louisiana highways' rights-of-way is desirable because of its economic advantage in chemical mowing and Johnson grass control. Since MSMA contains arsenic, there has been some public concern over MSMA's possible adverse environmental and health effects due to the buildup of arsenic residues in soil, water and biota. The objective of the project was to obtain baseline arsenic residue data along the highway rights-of-way of five selected highways in Louisiana: LA 7/Webster Parish; LA 15/Catahoula Parish; LA 496/Rapides Parish; LA 42/Ascension Parish; and US 171/Calcasieu Parish. In summary, 432 or 77.3% of all surface-soil samples collected contained from 0 to 50ppm of arsenic-residues while 127 or 22.7% contained over 50ppm. Most, 14 of 18, water samples contained arsenic residues below 50ppb which is the EPA Primary Drinking Water Standard. The background (baseline) arsenic-residue concentrations in surface-soil samples ranged from 3.72ppm to 13.9ppm of arsenic. The environmental and health risks due to the accumulation of arsenic residues in soil and water appear to be minimal. It was recommended that DOTD continue this monitoring program to maintain a current assessment of the environmental and health risks of MSMA application.
Environmental and Health Effects of MSMA (Monosodium Salt Methane Arsenic Acid) Application along Louisiana Highways: Executive Summary
The use of MSMA as a grass control herbicide along Louisiana highways' rights-of-way is desirable because of its economic advantage in chemical mowing and Johnson grass control. Since MSMA contains arsenic, there has been some public concern over MSMA's possible adverse environmental and health effects due to the buildup of arsenic residues in soil, water and biota. The objective of the project was to obtain baseline arsenic residue data along the highway rights-of-way of five selected highways in Louisiana: LA 7/Webster Parish; LA 15/Catahoula Parish; LA 496/Rapides Parish; LA 42/Ascension Parish; and US 171/Calcasieu Parish. In summary, 432 or 77.3% of all surface-soil samples collected contained from 0 to 50ppm of arsenic-residues while 127 or 22.7% contained over 50ppm. Most, 14 of 18, water samples contained arsenic residues below 50ppb which is the EPA Primary Drinking Water Standard. The background (baseline) arsenic-residue concentrations in surface-soil samples ranged from 3.72ppm to 13.9ppm of arsenic. The environmental and health risks due to the accumulation of arsenic residues in soil and water appear to be minimal. It was recommended that DOTD continue this monitoring program to maintain a current assessment of the environmental and health risks of MSMA application.
Environmental and Health Effects of MSMA (Monosodium Salt Methane Arsenic Acid) Application along Louisiana Highways: Executive Summary
D. L. Perry (author) / R. D. Germany (author) / R. W. Flournoy (author)
1984
28 pages
Report
No indication
English
Pesticides Pollution & Control , Environmental Health & Safety , Public Health & Industrial Medicine , Toxicology , Ecology , Analytical Chemistry , Roadbeds , Herbicides , Highways , Arsenic , Public health , Environmental surveys , Industrial hygiene , Louisiana , Pesticides , Soil analysis , Water pollution , Sediments , Assessments , Residues , Sampling , Concentration(Composition) , Sites , Environmental health , Path of pollutants , Toxic substances , Baseline measurements , MSMA herbicide , Occupational safety and health , Arsonic acid/methyl-(sodium-salt)
Environmental fate of monosodium methanearsonate (MSMA)—Part 1: Conceptual model
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Engineering Index Backfile | 1937