Extraction of acephate pesticide in environmental and agricultural samples by spectrophotometric method

Goswami, Jyoti; Banjare, Manoj Kumar; Banjare, Ramesh Kumar; Joyce, Karina B.; Manish, K.

doi:10.1016/j.jics.2021.100138

Cited by 2 publications

(1 citation statement)

References 52 publications

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“…Under the optimized experimental conditions, we investigated the interference study that was carried out for selective determination of pyraclostrobin as OCl in sample solution using PAS as coupling reagent. Selectivity describes whether methodology could discriminate interference of similar groups of compounds in the presence of analytes, which is determined by relative absorbance value by spectrophotometric method [18]. To assess the validity of the proposed method, the effects of various common foreign species and other pesticides were added to the standard solution containing 4.0 μg mL −1 of pyraclostrobin prior to the coupling reaction and analyzed by the spectrophotometric method at 600 wavelengths.…”

Section: Effect Of Interfering Ions and Cross-contaminantsmentioning

confidence: 99%

Colorimetric Determination of Pyraclostrobin Fungicide Using P-Amino-sulphonic Acid Coupling Reagent in Agricultural Soil/Environmental Samples by Spectrophotometric Analysis

Bhatt,

Kumar Rai,

Rai

2024

Advances in Colorimetry

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A simple and sensitive method for the determination of pyraclostrobin, a widely used fungicide, is described here which is based on diazotization and coupling with 4- aminosulphonic acid in alkaline medium. The reaction mechanism is based on the pre-equilibrium formation of amine and diazonium salt followed by a rate-limiting attack of the diazonium ion at an N-atom (N-coupling) to appear the corresponding red colored azo complex. The λmax, molar absorptivity and Sandell’s sensitivity related to the UV-Visible absorption spectrometry were found λmax = 600 nm, 2.7 × 104 L mol−1 cm−1 and 1.01 × 10−5 μg cm−2, respectively. Some of the important parameters like linearity range, limit of detection (LOD), limit of quantification (LOQ), correlation coefficient (R2) and recovery% were calculated 3 to 12 μgmL−1, 1.01 μgmL−1, 3.08 μgmL−1, 0.984 and 93.5–99.3%, respectively for the determination of organochlorine like pyraclostrobin using coupling reagent. The advantages of the present method are its simplicity, high selectivity and cost effective. In this article, the method has been validated by applying it to samples from different environmental conditions.

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Section: Effect Of Interfering Ions and Cross-contaminantsmentioning

confidence: 99%