Abstract
Standard procedures do not exist for drying and storage of plant samples prior to chemical analyses. Since immediate analysis is not always possible, current research examined which plant drying and storage method yielded the highest cyfluthrin recovery rates compared to traditional mechanical freeze-drying methods. Fifteen mesocosms were planted with rice. Cyfluthrin (5 mg L−1) was amended into the water column of individual mesocosms. 48 h later, plant material in the water column was collected from each mesocosm. Control (mechanical freeze drying) recovery was significantly greater (p < 0.001) than all 14 combinations of drying and storage. Significant differences also existed between all 14 different combinations. Greatest cyfluthrin recoveries in non-control plants were from the freezer-greenhouse-freezer drying and storage method. Results offer evidence for the efficient plant drying and storage methods prior to cyfluthrin analysis. Future studies should perform comparable analyses on various pesticide classes to determine possible relationships.
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Acknowledgments
Thanks to Renee Russell and Lisa Brooks for collection assistance and pesticide analysis. Mention of trade names or commercial products in this article is solely for the purpose of providing specific information and does not imply recommendation or endorsement by the US Department of Agriculture (USDA). The USDA is an equal opportunity employer and provider.
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Moore, M.T., Kröger, R. & Locke, M.A. Drying and Storage Methods Affect Cyfluthrin Concentrations in Exposed Plant Samples. Bull Environ Contam Toxicol 97, 244–248 (2016). https://doi.org/10.1007/s00128-016-1835-2
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DOI: https://doi.org/10.1007/s00128-016-1835-2