SYMPOSIA PAPER Published: 28 November 2014
STP157920130187

Granular Carrier Effects on Volatility of Pesticide Formulations

Source

Volatile organic compounds (VOCs) have been increasingly important in all formulation areas, including pesticides. In recent years, ASTM Method E2686-09 was developed to determine VOC content in formulations using granules to mimic soil types. The granules chosen are often used as agricultural chemical carriers. Volatility differences were noted. This paper used ASTM method E2686-09 as a model and examined different granular carriers. Inorganic, organic, and combination inorganic/organic carriers were investigated. Several types of formulation solvents were used. Volatility depended on granule type and solvent. In addition, a correlation was found between the types and amounts of pores (macropores, mesopores, and micropores) in the different carriers, and how well those carriers were able to retain the VOCs. In general, inorganic clay granules that contained mesopores and micropores showed less volatility than either organic or combination inorganic/organic carriers, which all lacked mesopores and micropores.

Author Information

Esposito, Nicholas
Oil-Dri Corporation of America, Chicago, IL, US
Bernal, Yasmith
Oil-Dri Corporation of America, Chicago, IL, US
Goss, G., Robert
Oil-Dri Corporation of America, Chicago, IL, US
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Details
Developed by Committee: E35
Pages: 1–12
DOI: 10.1520/STP157920130187
ISBN-EB: 978-0-8031-7602-7
ISBN-13: 978-0-8031-7601-0