Analytical methods to analyze pesticides and herbicides

Abstract

Presented in this paper is an annual review of literatures published in 2018 on topics relating to analytical methods for pesticides and herbicides. According to the different techniques, this review is divided into six sections, including extraction methods; chromatographic or mass spectrometric techniques; electrochemical techniques; spectrophotometric techniques; chemiluminescence and fluorescence methods; and biochemical assays.Practitioner points Totally 134 relevant research articles are summarized. The review is divided into six parts according to the techniques. Chromatographic and mass spectrometric methods are the most widely used.

Analytical Evaluation of Carbamate and Organophosphate Pesticides in Human and Environmental Matrices: A Review

“…A nonenzyme electrochemical sensor for the determination of an organophosphate (methyl parathion) was established by Huo et al (2018). In the analysis differential pulse voltammetry (DPV) technique was applied, where the linear range of MP (methyl parathion) concentration ranged from 1 ng/mL to 2 g/mL and the LOD was 0.53 ng/mL [ 54 ].…”

Occurrence and fate of pharmaceuticals, personal care products (PPCPs) and pesticides in African water systems: A need for timely intervention

“…The quadrupole–time-of-flight (Q-TOF) tandem mass spectrometer is currently one of the most selective devices coupled with liquid chromatography. Moreover, it is characterized by a very high separation efficiency [ 87 ]. Ultra-performance liquid chromatography (UPLC) and UHPLC- ultra-high-performance liquid chromatography …”

“…Pesticides including cyanazine, simazine, atrazine, and promethazine have been detected using ultra-high-performance liquid chromatography coupled with quadrupole time-of-flight–tandem mass spectrometry (UPLC-QTOF-TMS). The results revealed a linear range of 6–600 ng/ml at 0.01–0.04 and 0.04–0.15 ng/ml detection and quantification limits [ 87 ]. UHPLC has emerged as a powerful approach, mainly due to its ability to directly transfer existing high-performance liquid chromatography (LC) conditions.…”

Determination of Quizalofop-p-ethyl in onion spices: Weed control efficiency, residual profile, and food safety assessment under field conditions

“…It is necessary to develop a suitable method for analysis of this herbicide and test residues in eld studies to ensure residue data which can be used in xation of the maximum residue level (MRL) (Saha et al 2014; Szpyrka et al 2020). Chromatographic methods commonly used in the determination and separation of target pesticides including herbicides are gas chromatography (GC) and high performance liquid chromatography (HPLC) with precise detection systems (Toledano et al 2010;Masiá et al 2013; Wang et al 2019;Majumder et al 2022). The HPLC is preferred over GC methods due to the water solubility of phenoxy acids, which allows direct analysis of the phenoxy acids and their esters without derivatization (Mei et al 2015).…”