Solid Phase Extraction Method for the Determination of Atrazine and Cyanazine in Water Samples

• Published in: ASM science journal 2021-04, Vol.14, p.1-6
• Main Authors: Zainal Abidin, Nurul Auni, Abu Kassim, Nur Sofiah, Pungot, Noor Hidayah
• Format: Article
• Language: English
• Subjects: atrazine; cyanazine; gas chromatography; solid phase extraction; triazine herbicides
• ISSN: 1823-6782; 2682-8901
• DOI: 10.32802/asmscj.2020.631

Triazine is one of the herbicides group that is widely used in agriculture that acts as an inhibitor for the growth of unwanted weeds in plants. The use of this herbicide on plants is absorbed by the soil and flows into a nearby water system. This research focused on two types of triazines, namely atrazine and cyanazine. This research aims to extract this type of triazine herbicides and to determine their concentration in water samples. It was quantified by using gas chromatography-electron capture detector (GC-ECD). Solid phase extraction (SPE) method was applied to extract herbicides from water samples. The results indicate that all the samples contained atrazine and cyanazine. Studies in the range of 0.5 - 25 mg/L achieved good linearity with good correlation of determination, r2 value of 0.9922 - 0.9982 mg/L. Relative standard deviations (RSD) for triplicate analysis of the samples were less than 10.0%. The limit of detection (LODs) and limit of quantification (LOQs) of cyanazine and atrazine were found, ranging from 3.33 – 6.67 μg/L and 11.09 – 20.10 μg/L, respectively. The recoveries of the triazine herbicides studied in water samples ranged from 82.5% to 107.6%. The developed method exhibited excellent clean-up capability and was successfully applied for determining triazine herbicide residues in water samples.