A simple method for simultaneous determination of nine triazines in drinking water

Abstract

A simple, effective, and economic method for determination of nine triazines (ametryn, atrazine, cyanazine, prometryn, propazine, simazine, simetryn, terbuthylazine, and terbutryn) in drinking water based on solid-phase extraction (SPE) followed by high-performance liquid chromatography-diode array detection (HPLC-DAD) was developed. A specialized solid phase (Oasis HLB) was used, and the parameters that may affect the efficiency of SPE were optimized. The limits of detection (ranged from 0.010 to 0.023 µg L −1) were satisfactory and allow the determination of triazines at the levels required by European Union legislation. Repeatability (2.4-7.6%) and intermediate precision (0.9-11.0%) calculated at 0.1 µg L −1 (legislation level) were adequate. The accuracy calculated as the average recovery of spiked tap and mineral waters was higher than 86% for all compounds. The developed method also could be used for undergraduate laboratory experiments because it acquaints students with solution preparation, solid phase extraction procedure, and HPLC-DAD technique.

Enhanced Label-Free Photoelectrochemical Strategy for Pollutant Detection: Using Surface Oxygen Vacancies-Enriched BiVO4 Photoanode

“…The detection limit is 0.34 pM (S/N = 3), and the increase of the response signal by ATZ is 6.73 μA μcm –2 ·nM –1 , which is significantly higher than other homogeneous PEC sensing works (Table S3), showing high sensitivity of the proposed label-free and homogeneous PEC sensor. In addition, the detection limit of the sensor was far lower than some international standard of ATZ (European Union, 0.1 μg/L; United States Environmental Protection Agency, 3 μg/L; China’s Ministry of Health, 3 μg/L − ). Meanwhile, the comparisons of ATZ determination performance by various methods also demonstrate the superior comprehensive performance of the constructed sensor (Table S2).…”

Application of a Developed Method for the Extraction of Triazines in Surface Waters and Storage Prior to Analysis to Seawaters of Galicia (Northwest Spain)

“…The solid-phase extraction procedure was based on a previous method for drinking water developed by the same authors [28]. To optimize the method for surface waters, a filtration step prior to the SPE was studied.…”

Optimization and validation of the kinetic spectrophotometric method for quantitative determination of the pesticide atrazine and its application in infant formulae and cereal‐based baby food

“…High‐performance liquid chromatography (HPLC) is still the most commonly used technique for analyzing herbicides. Analytical HPLC methods with various detectors such as diode array detection (DAD), ultraviolet detection (UV), and mass spectrometry (MS) detection have been reported for the determination of atrazine. To quantify triazine by these methods, some authors have proposed several different approaches for preconcentration, extraction, and cleaning up.…”