Sensitive fluorimetric method for the determination of aniline by using tetra-substituted amino aluminium phthalocyanine

Autor:	Xiaolan Chen, Jin-Gou Xu, Zhong-Bao Li, Ya-Xian Zhu
Rok vydání:	2004
Předmět:	Detection limit Aqueous solution Potassium bromide Calibration curve Inorganic chemistry Fluorescence spectrometry Biochemistry Analytical Chemistry Standard curve chemistry.chemical_compound Aniline chemistry Phthalocyanine Environmental Chemistry Spectroscopy
Zdroj:	Analytica Chimica Acta. 505:283-287
ISSN:	0003-2670
DOI:	10.1016/j.aca.2003.10.067
Popis:	This is the first report of the determination of aniline with tetra-substituted amino aluminium phthalocyanine (TAAlPc) by a fluorimetric method. In KBr–HCl solution, nitrite ion diazotizes TAAlPc, thus, the fluorescence of TAAlPc is dramatically quenched. However, there is less quenching in the presence of aniline and the recovery in fluorescence intensity is linear with the concentration of aniline. Based on this, a novel method has been developed for the determination of aniline in aqueous solutions. Under the optimal conditions, the calibration graph for aniline is from 5 to 300 ng ml−1 with a 3σ limit of detection of 1.8 ng ml−1. The relative standard deviation for nine replicate measurements of 100 ng ml−1 aniline is 1.7%. The method was applied to the analysis of water samples with satisfactory results.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::170b46e40b955180575a5c6484956380 https://doi.org/10.1016/j.aca.2003.10.067 Zobrazit plný text záznamu Full Text from ScienceDirect