Abstract
The effectivity of UV irradiation with low and high pressure mercury (L-Hg and H-Hg) lamps on the decomposition of organic compounds in aqueous solutions, as pretreatment for the voltammetric determination of trace metals, is compared. The photolytic decomposition with the L-Hg lamp was much faster than with the H-Hg lamp. The higher efficiency of the L-Hg lamp is caused by its greater light intensity at short wavelengths. Interferences of organic compounds on the voltammetric determination of nickel and indium were eliminated successfully by ∼90 min irradiation with the L-Hg lamp. Humic acid and organic interference with the voltammetric determination of nickel in natural river water were successfully eliminated. The decomposition using the L-Hg lamp can be carried out without added oxidizing reagents and at room temperature, thus eliminating loss of water samples by evaporation at higher temperature.
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References
Van den Berg C-M-G (1991) Anal Chim Acta 250:265–276
Williams P-M (1969) Limnol Oceanogr 14:156–158
Foster P, Morris A-W (1971) Deep-Sea Res 18:231–236
Morris A-W (1974) Mar Pollut Bull 5:54–59
Whitfield P-H, Lewis A-G (1976) Estuarine Coastal Mar Sci 4:255–266
Batley G-E, Farrar Y-J (1978) Anal Chim Acta 99:283–292
Mart L (1982) Talanta 29:1035–1040
Dorten W, Valenta P, Nürnberg H-W (1984) Fresenius Z Anal Chem 317:264–272
Batley G-E (1986) Anal Chim Acta 187:109–116
Kolb M, Rach P, Schäfer J, Wild A (1992) Fresenius J Anal Chem 342:341–349
Bhowal S-K, Saur D, Neeb R (1993) Fresenius J Anal Chem 346:627–629
Achterberg E-P, van den Berg C-M-G (1994) Anal Chim Acta 291:213–232
Chemical Society of Japan (Ed) (1978) Shin Jikken Kagaku Koza. Maruzen. Tokyo 16:458–463
Pihlar B, Valenta P, Nürnberg H-W (1981) Fresenius Z Anal Chem 307:337–346
Van den Berg C-M-G, Nimmo M (1987) Sci Total Environ 60:185–195
Donat J-R, Lao K-A, Bruland K-W (1994) Anal Chim Acta 284:547–571
Nimmo M, Chester R (1993) Sci Total Environ 135:153–160
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Yokoi, K., Tomisaki, T., Koide, T. et al. Effective UV photolytic decomposition of organic compounds with a low-pressure mercury lamp as pretreatment for voltammetric analysis of trace metals. Fresenius J Anal Chem 352, 547–549 (1995). https://doi.org/10.1007/BF00323071
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DOI: https://doi.org/10.1007/BF00323071