VOC Emissions Calculator
DPR has developed a Web-based tool for calculating volatile organic compound (VOC) emissions from agricultural applications of nonfumigant pesticides. You can calculate VOC emissions from single or multiple pesticide products and applications. (DPR also has an Excel-based tool for calculating VOC emissions from fumigants.)
The VOC emissions calculated here rely on the product's emission potential (EP). EP is the percentage of the product assumed to potentially contribute to atmospheric VOCs. The benchmark method for estimating EPs is a laboratory test called thermogravimetric analysis (TGA). DPR has alternative methods for estimating EPs in the absence of TGA data. These are standardized reproducible methods for determining product EPs, and so provide the ability to accurately assess relative changes in VOC emissions from year to year. EPs may overestimate the absolute value of VOC emissions under certain circumstances because they do not account for other factors that can influence emissions, such as application method or soil adsorption.
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