Über die photometrische Bestimmung des Aluminiumgehaltes von legierten Stählen mit 8-Hydroxychinolin (Oxin)

Blazejak-Ditges, Dagmar

doi:10.1007/bf00454556

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2005

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“…Spectrophotometry, however, continues to enjoy wide populality. While there are many methods that use color reaction systems in spectrophotometry: 8-hydroxyquinoline method, 12 Chrome Azurol S method, 13 dihydroxyazobenzene method, 14 and Methylthymol Blue method, 15 most of them are not satisfactory, showing poor convenience, low sensitivity, low reproducibility and effects of interferents.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2005

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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 × 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 µg L -1 with a correlation coefficient of 0.9999, and the effects of foreign substances were low.

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Section: Introductionmentioning

confidence: 99%