Dissipation, risk assessment, half‐life period and method validation of carbendazim and triazophos in green pea by high‐performance liquid chromatography

Abstract

Herein, the simultaneous quantification, dissipation, risk assessment, half‐life period and method validation of carbendazim and triazophos by high‐performance liquid chromatography has been described. The developed method was validated as per the sante guidelines 2017. All calibration curves showed a good linear relationship (r > 0.99) within test range. Precision was assessed by intra‐ and inter‐day tests with relative standard deviations less than 5%. Recovery was observed within acceptable limit. The residue level of carbendazim and triazophos residues were observed upto the third day and reached below the detection limit on green pea on the fifth day after treatment with carbendazim and triazophos formulation at recommended dosages. Based on the findings, waiting period of 5 days is recommended for consumption of green pea. The presented study would be helpful for safe usage of carbendazim and triazophos on green pea and to prevent any health risk to consumers. The developed method is simple, easy, sensitive and repeatable with a short run time, and can be extended for residues based standardisation of pesticide formulations containing green pea and its use in pesticide industries.

Development, method validation and simultaneous quantification of eleven bioactive natural products from high‐altitude medicinal plant by high‐performance liquid chromatography

“…To our knowledge, no report to date is available regarding the method validation and simultaneous quantification of xanthones, flavonoids and steroids by HPLC. In continuation of our previous communication (Ahmad Dar et al, 2020; Dangroo et al, 2016; Dar et al, 2014, 2015, 2016, 2018, 2019; Fayaz et al, 2018; Singh et al, 2018; Wani et al, 2019a, 2019b, 2022), we herein report for the first time method development and simultaneous quantification of isolated natural products 1–11 (Figure 1) from Codonopsis ovata by HPLC. Various validation aspects of the analysis such as linearity, specificity, recovery, precision, robustness, limit of detection (LOD) and limit of quantification (LOQ) have been determined.…”

Persistence, dissipation kinetics, and waiting period of ethion on cucumber by gas chromatography‐electron capture detector

“…Maximum permissible intake was calculated by multiplying acceptable daily intake with the weight of average person (55 kg) and was found to be 550 µg person −1 day −1 . Taking average consumption of cucumber fruit as 80 g per day , maximum and average residues of ethion on cucumber were used for the calculation of theoretical maximum residue contributions values. Maximum permissible intake are present in (Table ) Theoretical maximum residue contributions values were found to be 73.6 and 77.6 µg person −1 (Table ) for average and maximum ethion residues respectively, when applied at 500 g.a.i.…”

Dissipation and gas chromatographic method for the determination of profenofos residues in/on green pea and cucumber

“…Gas chromatography (GC) appears to be a suitable choice for the identification, separation and quantification of profenofos. In continuation of our previous studies (Ahmad Dar et al, 2020; Dangroo et al, 2016; Dangroo et al, 2014; Dar et al, 2014; Dar et al, 2015; Dar et al, 2016; Dar et al, 2018; Dar et al, 2019; Fayaz et al, 2018; Jan et al, 2018; Khan et al, 2013; Khan et al, 2012; Singh et al, 2018; Wani et al, 2019a) on the application of chromatography for fingerprinting and chromatographic method development to assure quality control of vegetables/fruits/medicinal plants, herein we report a validated analytical method for the quantification of profenofos from green pea and cucumber, as well as risk assessment and evaluation of dissipation behaviour, persistence and half‐life.…”