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Nagaraja, P. and Shivaswamy, M. and Kumar, H. and Rangappa, K. S. (2001) Dapsone and iminodibenzyl as novel reagents for the spectrophotometric determination of trace amounts of nitrite in water samples. Analytical Sciences, 17 (3). pp. 439-442. ISSN 1348-2246
Nagaraja, P. and Shivaswamy, M. and Kumar, H. (2001) Highly sensitive N-(1-naphthyl)ethylene diamine method for the spectrophotometric determination of trace amounts of nitrite in various water samples. International Journal of Environmental Analytical Chemistry, 80 (1). pp. 39-48. ISSN 0306-7319