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Spectrophotometric Determination of Aluminum with m-Carboxyphenylfluorone, a Novel Chemical Probe, and Its Application

2005; Springer Nature; Volume: 21; Issue: 12 Linguagem: Inglês

10.2116/analsci.21.1549

1348-2246

Shinichiro Kamino, Takako Yamaguchi, Terumi Mori, Mika Miyamoto, Yukimi Kusumi, Yoshikazu Fujita,

Electrochemical Analysis and Applications

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 microg of aluminum in a final volume of 10 ml at 561 nm). The proposed method showed excellent sensitivity (molar absorptibity of 1.70 x 10(5) 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 microg L(-1) with a correlation coefficient of 0.9999, and the effects of foreign substances were low.