Journal
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
Volume 85, Issue 3, Pages 199-207Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/03067310412331334835
Keywords
arsenic speciation; hydride generation AAS; reaction medium
Categories
Ask authors/readers for more resources
Selective reaction media were applied to generate hydrides of total arsenic, As(III), As(V), dimethylarsonic acid (DMA) and monomethylarsonic acid (MMA) from natural waters acidified with HCl (0.1mol/L HCl in the sample) using reduction with 0.6%. NaBH4 in a continuous flow hydride generation system: 1. 1.0mol/L HCl in the acid channel, water samples pretreated with KI: determination of As(III) + As(V)+ MMA 2. 6.0 mol/L CH3COOH in the acid channel: determination of As(III) + DMA 3. 6.0 mol/L CH3COOH in the acid channel, water samples pretreatcd with KI: determination of As(III) + As(V) + DMA 4. 1.0 M tartaric acid in the acid channel, water samples pretreated with KI: determination of total arsenic As(III) + As(V) + DMA + MMA With the selected medium reactions (1-4) the same response can be obtained for all arsenic species. Calibration with arsenic(III) standard solutions was applicable to the four reactions for arsenic speciation in mineral water, underground water and sea water.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available