KATIA APARECIDA MESQUITA
1 resultados
Resultados de Busca
Agora exibindo 1 - 1 de 1
Artigo IPEN-doc 24062 Analysis of persistent organic pollutants (POPs) in sediments by GC/ECD generated by nuclide 63Ni2017 - MESQUITA, KATIA A.; AMARAL, PRISCILA O.; BUSTILLOS, JOSE O.V.Persistent Organic Pollutants (POPs) are toxic organic compounds resistant to environmental degradation. Besides, POPs bioaccumulate with potential significant impacts on human health and the environment. The Global Monitoring Plan (GMP) under the Stockholm Convention on POPs is a program that enables collection of comparable monitoring data from all regions of the world to assess the effectiveness in minimizing human and environmental exposure to POPs. The scope of this work is to develop and validate a method for the extraction and determination of POPs in sediments collected at Billings dam locate in São Paulo Metropolitan City. The compounds studied in this work are: Aldrin (C12H8Cl6), DDD (C14H10Cl4), DDE (C14H8Cll4), DDT (C14H9Cl5), Dieldrin (C12H8Cl6O), Endrin (C12H8Cl6O) and Heptachlor (C10H5Cl7). This work use the QuEChERS extraction method (Quick, Easy, Cheap, Effective, Rugged, and Safe) for sediment samples and the analysis of the compounds were carried out by gas chromatography with the electron capture detector (GC/ECD). The ECD detector ionizes the analytes by the beta particles from the nuclide sources 63Ni within carrier gas N2. The electrons produced in this process are collected, create an amplified current, and generating the chromatographic peak. The recovery of this method obtained values between 57% and 65% and the Relative Standard Deviation (RSD) values are between 1 and 4%. Details of the analytical method beside quantitative analyses data are presented in this work.