MONITORING OF ORGANOPHOSPHOROUS PESTICIDE RESDUES IN SAMPLES OF BANANA, PAPAYA, AND BELL PEPPER

AUTOR(ES)

Lemos, Mariana F., Lemos, Mayara F., Pacheco, Henrique P., Scherer, Rodrigo

FONTE

Quím. Nova

DATA DE PUBLICAÇÃO

2015-02

RESUMO

The objective of this study was to monitor 11 organophosphorus pesticides in samples of papaya, bell pepper, and banana, commercialized in the metropolitan area of Vitória (ES, Brazil). The pesticides were determined by an optimized and validated method using high performance liquid chromatography with tandem mass spectrometry (HPLC-MS/MS). All three samples exhibited a matrix effect for most of the pesticides, mainly with signal suppression, and therefore the calibration curves were produced in matrices. Linearity revealed coefficients of determination (r2) greater than 0.9895 for all pesticides and recovery results ranged from between 76% and 118% with standard deviation no greater than 16%. Precision showed relative standard deviation values lower than 19% and HorRat values lower than 0.7, considering all pesticides. Limits of quantification were less than 0.01 mg/kg for all pesticides. Regarding analysis of the samples (50 of each), none of the pesticides exceeded the maximum residue limit determined by Brazilian legislation.

Documentos Relacionados

• Monitoring of potassium in a culture of irrigated bell pepper in semiarid region
• Response of bell pepper to water replacement levels and irrigation times
• Irrigation management methods for the production of bell pepper in agricultural substrates
• Sensory evaluation and antioxidant capacity as quality parameters in the development of a banana, strawberry and juçara smoothie
• Estudo químico e biológico de micro-organismos endofíticos associados às frutas banana, pêra e goiaba