摘要
建立了离子色谱电导同时检测废水中乳酸、冰乙酸、丙酸、甲酸、异丁酸、丁酸、异戊酸和戊酸的方法。经活化的C18柱,采用Ion Pac AS11-HC色谱柱,淋洗液为1 mmol/L的KOH溶液,流速1.0 m L/min,抑制电流3 m A。方法检出限（S/N=5）在0.025~0.030 mg/L之间,方法在0.098~11.953 mg/L添加水平,加标回收率在80%~120%之间,测定值的相对标准偏差（n=6）在0.61%~2.00%之间。该方法简便、灵敏、准确,适用于废水中低分子有机酸含量的快速分析。
A method based on ion chromatography（IC） with conductivity detection was developed for simultaneous determination of layricctic acid,acetic acid,propanoic acid,formic acid,isobutyric acid,butyric acid, isovaleric acid and valeric acid in wastewater. After activation of C 18 column, the IonPac AS11-HC anion chromatographic column is used, and the eluent is 1 mmol/L of KOH aqueous solution. The eluent flow rate is 1.0 mL/min and suppression current 3 mA . Detection limits（S/N=5） found were ranged from 0.025- 0.030 mg/L, within the ranges of 0.507 mg/L to 11.953 mg/L, recoveries of the method ranged from 80% to 120%, with values of RSD＇s（n=6） the range of 0.61%-2.00%. The method was simple, sensitive and precise ,which was suitable for the qualification analysis of several low molecular organic acids in wastewater .
出处
《浙江化工》
CAS
2016年第6期46-50,共5页
Zhejiang Chemical Industry
基金
温州市质监系统科研计划项目(201405)
关键词
离子色谱
废水
有机酸
ions chromatography
wastewater
organic acids
