info:eu-repo/semantics/article
Speciation analysis of atmospheric arsenic adsorbed on pollen and aerobiological samples before and during COVID-19 pandemic period
Registro en:
Escudero, Daniela Rocío; Isaguirre, Andrea Celeste; Moyano, Mario Franco; HASUOKA, PAUL EMIR; Pacheco, Pablo Hugo; et al.; Speciation analysis of atmospheric arsenic adsorbed on pollen and aerobiological samples before and during COVID-19 pandemic period; Taylor & Francis Ltd; International Journal of Environmental Analytical Chemistry; 3-10-2022; 1-12
0306-7319
CONICET Digital
CONICET
Autor
Escudero, Daniela Rocío
Isaguirre, Andrea Celeste
Moyano, Mario Franco
HASUOKA, PAUL EMIR
Pacheco, Pablo Hugo
Moglia, Marta Matilde
Resumen
Atmospheric arsenic species adsorbed on pollen samples were extracted and determined by liquid chromatography coupled to inductively coupled plasma mass spectrometry (LC-ICP- MS). The optimised extraction method required acetone 1% (v v−1), 15 minutes ultrasonic bath and centrifugation. As (III) and As (V) concentrations ranged from 0.08 to 0.62 µg g−1, and from 0.33 to 0.89 µg g−1 respectively. The method reach a LOD and LOQ of 0.01 and 0.04 µg g−1 for As (III); and 0.01 and 0.06 µg g−1 for As (V), respectively analysing 0.05 g of pollen. Precision as relative standard deviation (RSD %) corresponded to 4.1% (n = 10). A standard addition method was performed for validation with quantitative As recoveries in a range of 81.39 to 104.81%. In order to define the As pollution source, a pre-pandemic and pandemic study was performed with significant variations in total As concentration in aerobiological samples, suggesting that traffic increases atmospheric As concentration. Fil: Escudero, Daniela Rocío. Universidad Nacional de San Luis; Argentina Fil: Isaguirre, Andrea Celeste. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Moyano, Mario Franco. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Química de San Luis. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Química de San Luis; Argentina Fil: HASUOKA, PAUL EMIR. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Química de San Luis. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Química de San Luis; Argentina Fil: Pacheco, Pablo Hugo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Química de San Luis. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Química de San Luis; Argentina Fil: Moglia, Marta Matilde. Universidad Nacional de San Luis; Argentina