Abstract
Orthohydroxypropiophenoneisonicotinoylhydrazone (OHPINH) is proposed as a new sensitive reagent for the spectrophotometric determination of aluminum(III). OHPINH formed a greenish-yellow colored complex with aluminum(III) in buffer solutions of pH 1 to 3. The color in pH 2 was stable for more than 48 h. The complex solution has given maximum absorbance at 390 nm when the reagent was chosen as blank and the absorbance of the reagent at this wavelength is negligible; the molar absorptivity and Sandell’s sensitivity being 0.6371 ×104 L mol − 1 cm − 1 and 4.234 ×10 − 3 μg cm − 2, respectively. The system obeys Beer’s law in the range of 0.5–3.5 μg mL − 1 with excellent linearity in terms of the correlation coefficient value of 0.999. Most of the common metal ions generally found associated with aluminum(III) do not interfere. The repeatability of the method was checked by finding the relative standard deviation. The developed method has been successfully employed for the determination of aluminum(III) environmental matrices like medicinal and leafy samples, alloys, and synthetic mixtures.
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Ramachandraiah, C., Rajesh Kumar, J., Adinarayana Reddy, S. et al. Development of a highly sensitive and selective method for extractive spectrophotometric determination of aluminum(III) from environmental matrices, synthetic mixtures, and alloys using orthohydroxypropiophenoneisonicotinoylhydrazone. Environ Monit Assess 160, 23–31 (2010). https://doi.org/10.1007/s10661-008-0654-2
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DOI: https://doi.org/10.1007/s10661-008-0654-2