IN-LINE, TITANIUM DIOXIDE-CATALYZED, ULTRAVIOLET MINERALIZATION OF TOXIC AROMATIC-COMPOUNDS IN THE WASTE STREAM FROM A FLOW INJECTION-BASED RESORCINOL ANALYZER

被引：26

作者：

DELAGUARDIA, M

KHALAF, KD

HASAN, BA

MORALESRUBIO, A

CARBONELL, V

机构：

[1] Department of Analytical Chemistry, University of Valencia, 46100 Burjassot, Valencia

来源：

ANALYST | 1995年 / 120卷 / 02期

关键词：

FLOW ANALYSIS; RESORCINOL DETERMINATION; SPECTROPHOTOMETRY; PHOTOLYSIS; TITANIUM DIOXIDE;

D O I：

10.1039/an9952000231

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A clean method was developed for the spectrophotometric determination of resorcinol. The method, based on the reaction between resorcinol and p-aminophenol (PAP), carried out in a flow system, involves an additional detoxification step based on the in-line TiO2-catalysed photodegradation of the indophenol dye formed and the remaining unreacted PAP. For this, after the measurement step the waste stream is merged with a TiO2 slurry (0.5 g l(-1) in 0.22 mol l(-1) HCl) and then passed through a UV photochemical reactor consisting of a PTFE tube (6 m x 0.8 mm i.d.) rolled on a UV lamp with a maximum irradiation wavelength of 254 nm. Under these conditions, the waste can be completely detoxified thus, providing a non-polluting method of analysis.

引用

页码：231 / 235

页数：5

共 22 条

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