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<p>Residue studies and dietary risk assessments are essential for evaluating the safe use of pesticides in crops. Residue behaviour and dietary risk assessment of lambda-cyhalothrin and novaluron in <i>Brassica oleracea</i> L. var<i>. italica</i> Plenck was studied using Quick, Easy, Cheap, Effective, Rugged and Safe method coupled to Gas Chromatography Tandem Mass Spectrometry. The method was validated to estimate the residues of the insecticides in broccoli according to SANTE. The limit of quantification of the method for lambda-cyhalothrin and novaluron was 0.010&#xa0;mg/kg and the method was found to be accurate and precise. The dissipation of lambda-cyhalothrin and novaluron residues in broccoli was in accordance with the first-order kinetic model with half-life of 1.525–1.930&#xa0;days and 1.678–2.170&#xa0;days, respectively. The residues of both insecticides were not detected in soil samples at harvest. The pre-harvest interval of 8–12&#xa0;days for lambda-cyhalothrin and 12–17&#xa0;days for novaluron was suggested. The proposed maximum residue limits (MRLs) of 0.9–1.5 and 3&#xa0;mg/kg for lambda-cyhalothrin and novaluron were calculated using the Organisation for Economic Co-operation and Development MRL calculator. The dietary risk assessment showed that the acute and the chronic hazard quotient were less than 1 for lambda-cyhalothrin and novaluron. This suggests that there was no chronic dietary risk to Indian consumers from broccoli.</p>

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Residues of lambda-cyhalothrin and novaluron in Brassica oleracea L. var. italica Plenck: method validation, residual behaviour and dietary risk assessment

  • 期刊论文

  • 发表日期：

    2025年8月18日

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  • Sakshi Sharma,
  • Sapna Katna,
  • Ajay Sharma,
  • Pankaj Sharma Istatu,
  • Nisha Devi,
  • Arvind Kumar,
  • Shubhra Singh

摘要

Residue studies and dietary risk assessments are essential for evaluating the safe use of pesticides in crops. Residue behaviour and dietary risk assessment of lambda-cyhalothrin and novaluron in Brassica oleracea L. var. italica Plenck was studied using Quick, Easy, Cheap, Effective, Rugged and Safe method coupled to Gas Chromatography Tandem Mass Spectrometry. The method was validated to estimate the residues of the insecticides in broccoli according to SANTE. The limit of quantification of the method for lambda-cyhalothrin and novaluron was 0.010 mg/kg and the method was found to be accurate and precise. The dissipation of lambda-cyhalothrin and novaluron residues in broccoli was in accordance with the first-order kinetic model with half-life of 1.525–1.930 days and 1.678–2.170 days, respectively. The residues of both insecticides were not detected in soil samples at harvest. The pre-harvest interval of 8–12 days for lambda-cyhalothrin and 12–17 days for novaluron was suggested. The proposed maximum residue limits (MRLs) of 0.9–1.5 and 3 mg/kg for lambda-cyhalothrin and novaluron were calculated using the Organisation for Economic Co-operation and Development MRL calculator. The dietary risk assessment showed that the acute and the chronic hazard quotient were less than 1 for lambda-cyhalothrin and novaluron. This suggests that there was no chronic dietary risk to Indian consumers from broccoli.