|Table of Contents|

Analysis of Nitrobenzoic Acid Isomers and Its Applicationin Wastewater Pretreatment(PDF)

南京师范大学学报（工程技术版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2020年01期
Page:
49-56
Research Field:
化学工程与技术
Publishing date:

Info

Title:
Analysis of Nitrobenzoic Acid Isomers and Its Applicationin Wastewater Pretreatment
Author(s):
Feng Changsheng1; 2; Xiong Jianxi1; 2; Zhang Zheng1; 2; Jiang Caiyun3; 4; Wang Yuping1; 2
(1.School of Chemistry and Materials Science,Nanjing Normal University,Nanjing 210023,China)(2.Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Control,Nanjing Normal University,Nanjing 210023,China)(3.Department of Engineering and T
Keywords:
nitrobenzoic acid; isomer; high performance liquid chromatography; quantitative analysis; wastewater
PACS:
O661.1
DOI:
10.3969/j.issn.1672-1292.2020.01.008
Abstract:
The production and refining of m-nitrobenzoic acid will produce a large amount of wastewater with high concentration of nitrobenzoic acid isomers. In order to select and optimize the technological conditions for wastewater pretreatment,it is necessary to separate and detect various nitrobenzoic acids in samples. In this study,a method for the separation and detection of nitrobenzoic acid isomers by high performance liquid chromatography is established. XDB-C18 column is used,methanol-water(pH=3.0)(volume ratio 35:65)is used as mobile phase,and the ultraviolet detection wavelength is 267 nm. Effects of composition and volume ratio,pH value and flow rate of mobile phase on the separation degree of nitrobenzoic acid isomers are investigated. The results show that the linear relationship among o-,m-,p-nitrobenzoic acid is good in the range of 12.14-194.0 mg/L,13.78-220.40 mg/L and 6.45-103.20 mg/L,respectively. The correlation coefficient R2 is greater than 0.999 5,and the relative standard deviation is less than 1.04%. The analytical method can be used to provide an analysis for the pretreatment of refined wastewater of m-nitrobenzoic acid.

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Last Update: 2020-03-15