Method of Correlation Coefficient Optimization Used in UV-vis Spectrophotometric Analysis for Effluent in Catalytic Ozonation

被引：1

作者：

Feng, Jing ^{[1
,2
]}

Chen, Honglin ^{[2
]}

Zhang, Xiaoming ^{[2
]}

机构：

[1] Xihua Univ, Chengdu 610039, Sichuan, Peoples R China

[2] Chinese Acad Sci, Chengdu Inst Organ Chem, Chengdu 610041, Sichuan, Peoples R China

来源：

JOURNAL OF APPLIED SPECTROSCOPY | 2018年 / 85卷 / 04期

关键词：

humic acid; UV-vis spectrophotometry; correlation coefficient optimization; regression analysis; AQUATIC HUMIC SUBSTANCES; ACTIVATED CARBON; WATER-TREATMENT; ACIDS; DEGRADATION; OZONE; OXIDATION; RADICALS; KINETICS; CEO2/AC;

D O I：

10.1007/s10812-018-0716-3

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

A wavelength selection method for spectrophotometric analysis, named correlation coefficient optimization (CCO), was employed for reagent-free analysis of organics (humic acid) in real sewage. The modeling set of CCO uses the effluent in the ozonation process of humic acid (HA) solution. In order to verify the relationship between HA concentration and absorbance at the selected wavelength, HA solutions with different mass concentrations were prepared as a validation set. The study showed that the absorbance at 300 nm could be a good quantitative indication of HA concentration. In addition, the absorbance at 300 nm was applied to analyze the HA concentration in the ozonation process. The decomposition of HA fits the pseudo-first-order kinetic model and has a linear relationship with pH and (T - 20)(2) (T is reaction temperature).

引用

页码：760 / 770

页数：11

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