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Multisyringe Flow Injection Analysis for Determination of 1-Naphthylamine in Water Samples

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Abstract.

1-Naphthylamine (NPA) is one of the main degradation products of pesticides derived from naphthalene, and a well-known bladder carcinogen in men. The Griess assay is used for NPA determination because of its high sensitivity and selectivity. The azo dye 4-(sulphophenylazo)-1-naphthylamine is formed, which shows a peak maximum at 540 nm. After optimizing multisyringe flow injection analysis (MSFIA) parameters, the analytical characteristics of the method were obtained, with a working linear range of 0.5 to 14 mg L−1, according to the equation A = 0.0738±0.0019 [NPA] + 0.0028 ± 0.0042, r = 0.9997. Values for RSD (%) and Erel (%) were calculated for the concentration levels of 0.5, 6 and 12 mg L−1; values obtained were 1.1, 0.4 and 0.3% for RSD and 0.8, 0.3 and 0.2% for Erel, respectively. LD was 0.01 mg L−1 and LQ was 0.04 mg L−1 NPA. The MSFIA procedure for the determination of NPA was applied to different water samples (well water, tap water, seawater, and wastewater from the EDAR-1, Palma de Mallorca water treatment plant), with satisfactory results and a throughput of 90 samples per hour.

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Correspondence to Jorge L. Guzmán Mar.

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Guzmán Mar, J., López Martínez, L., López de Alba, P. et al. Multisyringe Flow Injection Analysis for Determination of 1-Naphthylamine in Water Samples. Microchim Acta 153, 139–144 (2006). https://doi.org/10.1007/s00604-005-0469-6

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  • DOI: https://doi.org/10.1007/s00604-005-0469-6

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