| Autor: |
Escudero, Daniela R., Isaguirre, Andrea C., Moyano, Mario F., Hasuoka, Paul Emir, Pacheco, Pablo, Moglia, Marta M. |
| Předmět: |
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| Zdroj: |
International Journal of Environmental Analytical Chemistry; Dec2024, Vol. 104 Issue 17, p5761-5772, 12p |
| Abstrakt: |
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. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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