Spectrofluorimetric determination of acetone in water samples with solid-phase extraction and a new benzaldehyde derivative

被引:0
|
作者
Michel, P. [1 ]
Boudenne, J. -L. [1 ]
Coulomb, B. [1 ]
Robert-Peillard, F. [1 ]
机构
[1] Aix Marseille Univ, LCE, Marseille, France
关键词
Acetone; Detection; Spectrofluorimetry; Solid-phase extraction; Wastewater; DISSOLVED ORGANIC-MATTER; SPECTROPHOTOMETRIC DETERMINATION; ACETALDEHYDE; FORMALDEHYDE; ALDEHYDES; ETHANOL; BUTANOL; WASTE;
D O I
10.1016/j.talanta.2024.126984
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
A new method is described for acetone (C(CH3)2O) determination in water samples. The method is based on the reaction with 4-(dimethylamino)benzaldehyde (DMAB) in dimethyl sulfoxide (DMSO) in slightly basic medium, resulting in a highly fluorescent compound with fluorescent wavelengths undisturbed by other common fluorescent compounds. Experimental conditions were optimized (reagents concentrations, reaction time) to reach optimal sensitivity. For the analysis of aqueous samples, a preconcentration step of acetone by solid-phase extraction (SPE) followed by an elution step in DMSO was optimized using Isolute ENV + columns. A highly satisfactory low detection limit of 0.014 mu M (0.8 mu g L- 1) was achieved by combining these two steps, with a linear range from 0.048 to 5 mu M and relative standard deviations between 5.7 % and 6.9 %. The protocol was validated on complex real water samples such as river water and wastewater, and our fluorimetric method with DMAB was in good agreement with the reference LC-UV method with DNPH.
引用
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页数:7
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