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2010•The Korean Journal of Pesticide ScienceRequires access

Characteristics on the Conversion of EBDCs Fungicides to ETU for Mancozeb and Metiram

Mi-Ra Jang, Kwang-Eun Hwang, Eun-Soon Lee, Eun-Hee Kim, Dong-Hyun Kim, Jung-Hun KIm, Seog-Gee Park

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Abstract

This study was conducted to investigate the characteristics of conversion and residue for two EBDCs fungicides (mancozeb and metiram) and their metabolite, ethylenethiourea (ETU) under laboratory conditions. The sampling on the pesticides was done at 0, 1, 2, 5, 7, 9, 12, 15, 19, 22 and 26 days. The amounts of their residues and ETU were analyzed with an HPLC-DAD. The average recoveries were for mancozeb, for metiram, and for ETU. The half-lives of mancozeb and metiram were 7.5 and 27.8 day, respectively. The conversion rates of mancozeb and metiram to ETU ranged from 4.7 to 67.2% and from 7.5 to 34.6%, respectively. These results may be different under the real environmental conditions. Therefore, following many studies are recommended to make the criteria for applying the use and safety for mancozeb and metiram.

About this research paper

What this paper is about

This study was conducted to investigate the characteristics of conversion and residue for two EBDCs fungicides (mancozeb and metiram) and their metabolite, ethylenethiourea (ETU) under laboratory conditions. The sampling on the pesticides was done at 0, 1, 2, 5, 7, 9, 12, 15, 19, 22 and 26 days. The amounts of their residues and ETU were analyzed with an HPLC-DAD. The average recoveries were for mancozeb, for metiram, and for ETU. The half-lives of mancozeb and metiram were 7.5 and 27.8 day, respectively. The conversion rates of mancozeb and metiram to ETU ranged from 4.7 to 67.2% and from 7.5 to 34.6%, respectively. These results may be different under the real environmental conditions. Therefore, following many studies are recommended to make the criteria for applying the use and safety for mancozeb and metiram.

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Available abstract

This study was conducted to investigate the characteristics of conversion and residue for two EBDCs fungicides (mancozeb and metiram) and their metabolite, ethylenethiourea (ETU) under laboratory conditions. The sampling on the pesticides was done at 0, 1, 2, 5, 7, 9, 12, 15, 19, 22 and 26 days. The amounts of their residues and ETU were analyzed with an HPLC-DAD. The average recoveries were for mancozeb, for metiram, and for ETU. The half-lives of mancozeb and metiram were 7.5 and 27.8 day, respectively. The conversion rates of mancozeb and metiram to ETU ranged from 4.7 to 67.2% and from 7.5 to 34.6%, respectively. These results may be different under the real environmental conditions. Therefore, following many studies are recommended to make the criteria for applying the use and safety for mancozeb and metiram.

Key concepts: Mancozeb, Fungicide, Chemistry, Metabolite, Toxicology, Pesticide, Environmental chemistry, Horticulture

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