Abstract
A rapid and sensitive method has been developed for the determination of lead in water samples by flame atomic absorption spectrometry using on-line preconcentration on a microcolumn packed with silica gel treated with a mixture of Aliquat 336 and nitroso-R-salt. The lead is retained at pH 5.5. The preconcentrated lead is directly eluted from the column to the nebulizer-burner system using 150 μL of 0.1 mol/L hydrochloric acid. The optimum preconcentration conditions are given and the retention efficiency achieved is higher than 80%. The enrichment factor is 37 and 100 for sample volumes of 5 and 30 mL, respectively. The limits of detection are 10.0, 6.0 and 4.0 ng/mL when 5, 10 and 30 mL of water is preconcentrated.
Similar content being viewed by others
References
Taylor A (1985) Clin Endocrinol Metabolism 14:658
Tyson JF, Bysouth SR, Grzeszcyk EA, Debrah E (1992) Anal Chim Acta 261:75
Wendl W, Mueller-Vogt M (1988) J Anal Atom Spectrom 3:63
Bonilla M, Rodriguez L, Camara C (1987) J Anal Atom Spectrom 112:157
Madrid Y, Meseguer J, Bonilla M, Camara C (1990) Anal Chim Acta 237:181
Chikuma M, Aoki H (1993) J Anal Atom Spectrom 8:415
Fang Z, Sperling M, Welz B (1990) J Anal Atom Spectrom 5:639
Sperling M, Yin X, Welz B (1991) J Anal Atom Spectrom 6:295
Olsen S, Pessenda LCR, Ruzicka J, Hansen EH (1983) Analyst 108:905
Fang Z, Ruzicka J, Hansen EH (1984) Anal Chim Acta 164:23
Malamas F, Bengtsson M, Johansson G (1984) Anal Chim Acta 160:1
Purohit R, Devi S (1992) Anal Chim Acta 259:53
Chikuma M, Tanaka T, Tanacka H (1991) Biomed Res Trace Elem 2:85
Takada T, Koide T (1987) Anal Chim Acta 198:303
Przeszlakowski S, Kocjan R (1982) Chromatographia 15:717
Zhang Y, Riby P, Cox AG, Mc Leod CW (1988) Analyst 113:125
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Rodríguez, D., Fernández, P., Pérez-Conde, C. et al. Determination of lead in natural waters using flow injection with on-line preconcentration and flame AAS detection. Fresenius J Anal Chem 349, 442–446 (1994). https://doi.org/10.1007/BF00322930
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00322930