Portal de Periódicos da CAPES

VALIDAÇÃO DE MÉTODO ANALÍTICO PARA QUANTIFICAÇÃO DOS ESTRÓGENOS NATURAIS (E1, E2 E E3) E SINTÉTICO (EE2) EM ÁGUA SUPERFICIAL E MATERIAL PARTICULADO EM SUSPENSÃO DE UM ESTUÁRIO SUBTROPICAL DO ATLÂNTICO SUL, BRASIL

2024; Brazilian Chemical Society; Linguagem: Inglês

10.21577/0100-4042.20240057

1678-7064

Pedro Toledo Netto, Marcos Canto Machado, Luiz Laureno Mafra Júnior, César C. Martins,

Water Quality Monitoring and Analysis

VALIDATION OF ANALYTICAL METHOD FOR QUANTIFICATION OF NATURAL ESTROGENS (E1, E2, AND E3) AND SYNTHETIC (EE2) IN SURFACE WATERS AND SUSPENDED PARTICULATE MATERIAL OF A SOUTH ATLANTIC SUBTROPICAL ESTUARY, BRAZIL. Marine pollution has become relevant for coastal conservation units and ecosystems of great ecological importance. This study validated analytical methods to investigate the occurrence of the emerging contaminants 17β-estradiol (E2), estrone (E1), estriol (E3), and 17α-ethinylestradiol (EE2) in surface waters and suspended particulate matter (SPM) from Guaratuba Bay, South Atlantic, Brazil. The analysis was performed by liquid chromatography coupled to a fluorescence detector (LC-FLD) after pre-concentration of surface water samples by solid phase extraction (SPE) or solid-liquid extraction for SPM samples. The recovery percentages were between 48 and 87%, and the coefficient of variation (CV) between 3 and 24% for SPM and from 64 to 107% (CV of 4 to 42%) for surface water. The method thus proved to be accurate and precise at the concentrations studied (ng g-1 and µg L-1). The concentration ranged from 10 to 177 ng L-1 in surface waters and from 392 to 4108 ng g-1 in SPM. E2, EE2, and E3 were found in SPM under different climatic conditions and population occupation. EE2 was determined in all sampling campaigns, especially in summer, when the number of tourists increases considerably. The presence of EE2 in the SPM of Guaratuba Bay warns for possible implications for the health of coastal environments.