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

Abstract

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.

Determination of Trace Aluminum by Fluorescence Quenching with m-Carboxyphenylfluorone as Analytical Reagent

“…The calibration curve showed good linearity over the range tested, from 0.03 to 1.50 μg dm -3 , the correlation coefficient was r = 0.999, and the limit of detection was calculated as 0.02 μg dm -3 . The sensitivity of the proposed method was found to be a hundred times better than that of the MCPF spectrophotometric method 18 (3.0 -140 μg dm -3 ). The relative standard deviation (RSD) for a 0.35 μg dm -3 Al(III) solution (n = 6: between-day precision) was 2.70% and that for the MCPF blank solution was 0.93% (n = 6: within-day precision).…”

“…Previously, we proposed a highly sensitive and practical spectrophotometric method for the detection of aluminum, using synthetic m-carboxyphenylfluorone (MCPF) as a novel analytical reagent. 18 Despite the wide concentration range used (3.0 -140 μg dm -3 ) and the simplicity of the method, the determination of Al(III) at concentrations of Al(III) below 3.0 μg dm -3 remains to be performed. MCPF ( Fig.…”

Selective Membrane Sensor for Aluminum Determination in Food Products, Real Samples and Standard Alloys

“…Utilities of electrode sensors have developed to use in different ways [7][8][9]. Many techniques, like, atomic absorption spectrometry; AAS [10][11][12][13][14][15][16], spectro-fluorometry [17,18], chromatography [19][20][21][22], a laser diode atomic absorption spectroscopy [23], inductively coupled plasma-atomic emission spectrometry; ICP-AES [24][25][26], inductively coupled plasma-mass spectra; ICP/MS [27][28][29][30], spectrophotometry based on use of various reagents [31][32][33][34][35][36][37][38][39][40][41], ion-selective electrode techniques [42][43][44][45][46][47][48][49][50][51][52] and other recently different methods [53]…”

Dispersive ionic liquid microextraction of aluminium from environmental water samples by effervescent generation of carbon dioxide

“…The determination of Al(III) in different environmental samples has become important due to its negative role in human health. The analytical techniques which are mostly used for the determination of Al(III) are spectrofluorometry [6], graphite furnace atomic absorption spectrometry (GFAAS) [7], spectrophotometry [8] and flame atomic absorption spectrometry (FAAS) [9]. The separation techniques which are mostly used for the preconcentration of the analyte are solid-phase extraction (SPE) [10,11], liquid-liquid extraction (LLE) [12] and cloud point extraction (CPE) [13].…”