Determination of Fenpyroximate Acaricide in Vegetables, Soil and Water Samples using UV-Visible Spectroscopy

Abstract

Modern agriculture makes use of chemical pesticides to increase the crop productivity so as to meet the daily needs of uncontrolled population growth. These increase the productivity neglecting the fertility of soil and food quality, hence risking the health of human beings including animals. Fenpyroximate is a kind of acaricide which attacks and kills mites and decreases the growth of larvae. A method is established for the detection of fenpyroximate and stop excessive use of pesticide. After performing several tests on various wavelengths, the λmax for the detection of fenpyroximate was 435 nm for azo dye. Limit of detection (LOD) and limit of quantification (LOQ) was found to be 0.687 μg mL-1 and 2.083 μg mL-1, respectively. Furthermore, molar absorptivity, Sandell′s sensitivity were calculated to be 2.3 × 10-7 mol-1 cm-1 and 1 × 10-5 μg cm-2, respectively. The azo dye follows Beer′s law in the range 5 μg to 14 μg in 10 mL that can be easily detected by using spectrophotometric analysis. This method is very sensitive, low cost and less time consuming. The present method is applied successfully in various vegetables (i.e. apple, cucumber, potato, spinach, etc.) soil and water samples.

Residue, dissipation, and dietary intake evaluation of fenpyroximate acaricide in/on guava, orange, and eggplant under open field condition

“…In eggplant and guava extracts, the ME was negligible at all tested dilution factors. In orange extract ( Figures 3 , 4 ), fenpyroximate shows moderate signal suppression at a dilution factor of 5 and 10, possibly due to the presence of nobiletin and flavonoids in citrus peels, which are considered one of the prominent compounds of poly methoxy flavonoids in citrus fruits ( 30 ). Thus, a dilution factor of 20-fold was selected.…”

Monoclonal antibody-based icELISA for monitoring fenpyroximate in citrus and apple samples

“…Aladaghlo et al determined fenpyroximate residues by corona discharge ion mobility spectrometry in citrus samples [13] . Sahu et al experimentally detected fenpyroximate in various vegetables, water and soil samples by UV-visible spectroscopy [14] . Yang et al determined fenpyroximate in water samples based on that fenpyroximate could largely enhance the intensity of the luminol-KMnO 4 chemiluminescence system following o ine ultrasonic treatment [15] .…”