Quimica nova | |
Determination of arsenic in contaminated waters using energy dispersive X-ray fluorescence | |
Pataca, Luiz Carlos M.1  Bortoleto, Gisele G.1  Bueno, Maria Izabel M. S.1  | |
[1] Universidade Estadual de Campinas | |
关键词: arsenic; natural water; EDXRF.; | |
DOI : 10.1590/S0100-40422005000400004 | |
学科分类:化学(综合) | |
来源: Sociedade Brasileira de Quimica | |
【 摘 要 】
This work proposesa simple, fast and inexpensive method to determine As in natural waters, usingX-ray fluorescence. 50 µL of each sample containing 100 mg L-1of yttrium as internal standard were deposited over a 2.5 µm thicknessMylarTM film. The samples were dried at 50 °C for 2 h. X-rayspectra were obtained using an EDXRF apparatus. The accuracy was determinedby analyte addition/recovery and by comparison with Hydride Generation AtomicAbsorption Spectrometry (HG AAS). A recovery of about 100% was obtained andthe results were in good agreement with HG AAS. The method showed a relativestandard deviation of 6.8% and a detection limit of 10.5 µg L-1of As.
【 授权许可】
CC BY
【 预 览 】
Files | Size | Format | View |
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RO201902015880696ZK.pdf | 309KB | download |