Development, validation and matrix effect of a QuEChERS method for the analysis of organochlorine pesticides in fish tissue

作者：Stremel Tatiana R. De O.; Domingues Cinthia E.; Zittel Rosimara; Silva Cleber P.; Weinert Patricia L.; Monteiro Franciele C.; Campos Sandro X.

来源：Journal of Environmental Science and Health - Part B: Pesticides, Food Contaminants, and Agricultural Wastes , 2018, 53(4): 246-254.

DOI：10.1080/03601234.2017.1410414

• QuEChERS
• organochlorine pesticides
• fish tissue
• GC-ECD

This study aims to develop and validate a method to determine OCPs in fish tissues, minimizing the consumption of sample and reagents, by using a modified QuEChERS along with ultrasound, d-SPE and gas chromatography with an electron capture detector (GC-ECD), refraining the pooling. Different factorial designs were employed to optimize the sample preparation phase. The validation method presented a recovery of around 77.3% and 110.8%, with RSD lower than 13% and the detection limits were between 0.24 and 2.88gkg(-1), revealing good sensitiveness and accuracy. The method was satisfactorily applied to the analysis of tissues from different species of fish and OCPs residues were detected. The proposed method was shown effective to determine OCPs low concentrations in fish tissues, using small sample mass (0.5g), making the sample analyses viable without the need for grouping (pool).

• 出版日期2018