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Dissipation pattern and risk assessment studies of triazophos residues on capsicum (Capsicum annuum L.) using GLC-FPD and GC-MS

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Abstract

The present study was carried out to observe the dissipation pattern of triazophos on capsicum and risk assessment of its residues on human beings and to suggest a waiting period for the safety of consumers. Following two applications of triazophos (Truzo 40 EC) at 500 and 1000 g a.i. ha−1, the average initial deposits were found to be 3.61 and 6.26 mg kg−1, respectively. These residues dissipated below the limit of quantification (LOQ) of 0.05 mg kg−1 in 10 and 15 days at the recommended and double the recommended dosages, respectively. The calculated values of half-life were 2.31 and 2.14 days at recommended and double the recommended dosages, respectively. Theoretical maximum residue contribution (TMRC) values were found to be 28.8 and 41.6 μg person−1 day−1 at 500 and 1000 g a.i. ha−1, respectively, and found to be below the maximum permissible intake on capsicum fruit on the 7th day. Therefore, a waiting period of 7 days is suggested for consumption of capsicum sprayed with triazophos at the recommended dosages.

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Acknowledgments

The authors are thankful to the Professor and Head, Department of Entomology, PAU, Ludhiana for providing the necessary research facilities. Financial assistance provided by Indian Council of Agricultural Research (ICAR), New Delhi, is also gratefully acknowledged.

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Authors and Affiliations

  1. Pesticide Residue Analysis Laboratory, Department of Entomology, Punjab Agricultural University, Ludhiana, 141004, Punjab, India

    Yadwinder Singh, Kousik Mandal & Balwinder Singh

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  1. Yadwinder Singh
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  2. Kousik Mandal
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  3. Balwinder Singh
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Correspondence to Yadwinder Singh.

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Singh, Y., Mandal, K. & Singh, B. Dissipation pattern and risk assessment studies of triazophos residues on capsicum (Capsicum annuum L.) using GLC-FPD and GC-MS. Environ Monit Assess 187, 637 (2015). https://doi.org/10.1007/s10661-015-4843-5

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  • DOI: https://doi.org/10.1007/s10661-015-4843-5

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