Development of a green microwave assisted extraction method for triazine herbicides determination in soil samples

Journal of the Brazilian Chemical Society

Valquíria M. Silva¹  Willian F. Costa¹  Jesuí V. Visentainer¹  Nilson E. Souza¹  Cláudio C. Oliveira¹ 

[1] ,Universidade Estadual de Maringá Departamento de Química Maringá PR ,Brazil

关键词: triazines;    microwave digestion;    green extraction method;    HPLC;   

DOI  :  10.1590/S0103-50532010000600013

来源: SciELO

【 摘 要 】

It was developed a green microwave-assisted extraction method for determination of triazine herbicides in soil samples. The extraction strategy was based on micellar medium associated to microwaves followed by the herbicides determination by HPLC in such way that the procedure could be considered as green. Two portions (10 and 8 mL) of aqueous SDS (sodium dodecyl sulphate) 0.06% (m/v) were used as extracting solutions associated to 0.500 g of sample and the following microwave oven program: 540 W (6 min), 0 W (1 min), 630 W (2 min). The analytical curves were linear in the analytical range of 0.05 up to 10.0 mg L-1 for atrazine, ametryne and simazine. The limits of detection and quantification were estimated as 0.90, 0.57 and 0.235 µg g-1 and 3.1, 1.9 and 0.8 µg g-1 for atrazine, ametryne and simazine, respectively. The proposed method is precise (RSD < 8%, n = 3) and the obtained results are in agreement with the classical one. Recovery tests for soil samples indicated that the percentage of recuperation were between 82.0 e 94.0%.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License