A new spectrophotometric method for the determination of aniline in environmental water samples

作者：Zhao MP; Zhang XX; Li YZ^*; Chang WB

来源：Analytical Letters, 2000, 33(14): 3067-3075.

DOI：10.1080/00032710008543242

• aniline
• spectrophotometric
• water sample
• routine analysis
• 8-hydroxyquinaldine
• N-chlorosuccinimide

A new spectrophotometric method has been established to determine trace aniline in water samples. A mixture solution of N-chlorosuccinimide and 8-hydroxyquinaldine in N,N-dimethylformamide (DMF) was used to react with the aniline in water at room temperature (20 degreesC). When the solution was adjusted to pH 10-11 by adding 3 mol/L NaOH, a clear and blue-colored dye formed immediately with the maximum absorption wavelength at 615 nm. Molar absorptivity and detection limit were found to be 1.0x10(4) L-. mol(-1.) cm (-1) and 30 mug/L, respectively. Linearity was excellent in the concentration range of 0.2 to 15 mg/L aniline in water sample. The proposed method has been used to analyze aniline in surface and sewage water samples with the recoveries 96-103% and relative standard deviation less than 3%. It';s a promising method to be applied for routine analysis of aniline in water.

• 出版日期2000
• 单位北京大学