Abstract − Analytical Sciences, 21(12), 1549 (2005).
Spectrophotometric Determination of Aluminum with m-Carboxyphenylfluorone, a Novel Chemical Probe, and Its Application
Shinichiro KAMINO, Takako YAMAGUCHI, Terumi MORI, Mika MIYAMOTO, Yukimi KUSUMI, and Yoshikazu FUJITA
Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka 669-1094, Japan
A highly spectrophotometric method for the determination of aluminum was developed. This method used the color reaction between m-carboxyphenylfluorone (MCPF) as a novel chemical probe and aluminum in the presence of a surfactant, poly(N-vinylpyrrolidone) (PVP, K-90) (0.03 - 1.40 µg of aluminum in a final volume of 10 ml at 561 nm). The proposed method showed excellent sensitivity (molar absorptibity of 1.70 × 105 l mol-1 cm-1) and reproducibility (within-day precision: RSD = 0.35% n = 6, between-day precision: RSD = 0.44% n = 6). Linearity was achieved over the range 3 - 140 µg L-1 with a correlation coefficient of 0.9999, and the effects of foreign substances were low.
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