Quantification, dissipation behavior and risk assessment of ethion in green pea by gas chromatography‐electron capture detector

Abstract

Residue investigation was carried out to scrutinize the persistence, dissipation behavior, half-life, and risk assessment of ethion on green pea fruit by spraying ethion at the fruiting stage followed by another application at 10 day intervals. The samples were extracted by using a quick, easy, low-cost, effective, rugged, and safe method, and the residues of ethion were analyzed by gas chromatography with electron capture detection. Here we report a novel, accurate, and cost-effective gas chromatography method for the determination of average deposits of ethion on green pea. The initial deposits were found to be 4.65 mg/kg following the application of insecticide. Residues of ethion reached below the detection limit of 0.10 mg/kg after 25 days at recommended dosage. The half-life of ethion was found to be 4.62 days. For risk assessment studies, the 25th day will be safe for consumers for the consumption of green peas. The developed method is simple, sensitive, selective, and repeatable and can be extended for ethion-based standardization of herbal formulations containing green pea and its use in pesticide industries.

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

“…also observed dissipation of ethion in green pea and found it to follow first‐order kinetics with half‐life 2.47 days following application of ethion at 500 g a.i. ha −1 . Hassanzadeh, Nasrin, et al.…”

“…Ishrat et al also observed dissipation of ethion in green pea and found it to follow first-order kinetics with half-life 2.47 days following application of ethion at 500 g a.i. ha −1[19]. Hassanzadeh, Nasrin, et al also reported half-life of ethion on green house cucumbers 2.1 and 1.8 days following application of ethion at 375 and 700 g a.i.…”

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

“…Therefore, RP‐HPLC appears the helpful approach of choice affording identification, separation and quantification of pesticides . In present communication with continuation of our previous studies on application of chromatography, risk assessment, persistence and simultaneous quantification of carbendazim and triazophos has been evaluated by validated reversed phase high performance liquid chromatography.…”

Method validation and simultaneous quantification of eight organochlorines/organophosphates in apple by gas chromatography

“…Therefore, gas chromatography (GC) appears the appropriate choice affording identification, separation and quantification of pesticides. In continuation of our previous studies [19][20][21][22][23][24][25][26][27][28] on application of chromatography for fingerprinting and chromatographic method development to assure quality control of vegetables/fruits/medicinal plants, a validated analytical method has been developed for the simultaneous quantification of eight pesticides ( Fig. 1) from apple: chlorpyrifos-methyl (1), chlorpyrifos (2), quinolphos (3), profenofos (4), myclobutnil (5), ethion (6), fenpropathrin (7) and cypermethrin (8).…”