A Reliable and Straightforward Combination of vortex-assisted Dispersive Magnetic solid-phase Extraction with Direct Sorbent Sampling for Highly Sensitive Silver Determination in Water Samples Using Flame and Metal Furnace AAS.

Autor: Santos, Diego Prudencio dos1 (AUTHOR), Ferreira, Milena do Prado1 (AUTHOR), Diniz, Kristiany Moreira2 (AUTHOR), Segatelli, Mariana Gava1 (AUTHOR), Figueiredo, Eduardo Costa de3 (AUTHOR), Tarley, César Ricardo Teixeira1,4 (AUTHOR) ctarleyquim@yahoo.com.br
Zdroj: Bulletin of Environmental Contamination & Toxicology. Oct2024, Vol. 113 Issue 4, p1-9. 9p.
Abstrakt: In the present paper, the assessment of vortex-assisted dispersive magnetic solid-phase extraction using amino-functionalized mesoporous combined with direct magnetic sorbent sampling (DMSS) in flame or furnace atomic absorption spectrometry (FAAS or FF-AAS) was demonstrated for highly sensitive silver determination in water samples. The developed method showed significant enrichment factors compared to conventional pneumatic nebulization by FAAS, 607 for DMSS-FF-AAS and 114 for DMSS-FAAS. The analytical curve showed linearity in the range from 5.0 to 70.0 µg L− 1 and 1.0 to 15.0 µg L− 1 and limits of detection of 0.59 and 0.09 µg L− 1 for DMSS-FAAS and DMSS-FF-AAS, respectively. The intra and inter-day precision evaluated as a percentage of the relative standard deviation (RSD,%) ranged from 1.89 to 4.71% for levels of 25.0 and 65.0 µg L− 1. The method was applied in different kinds of water samples without matrix effects, yielding recovery values from 90 to 110%. [ABSTRACT FROM AUTHOR]
Databáze: GreenFILE
Externí odkaz: