超声萃取-离子色谱法测定建设用砂石中氟、氯、硫酸根离子
梁晨,郑秀瑾,张锦梅,邵光印,张苗苗
青岛盛瀚色谱技术有限公司,青岛 266101
Determination of fluorine, chlorine and sulfate ions in construction sand by ultrasonic extraction and ion chromatography
梁晨,郑秀瑾,张锦梅,邵光印,张苗苗
Qingdao Shenghan Chromatograph Technology Co., Ltd., Qingdao 266101, China
摘要:
建立超声萃取-离子色谱法测定建设用砂石中氟、氯、硫酸根离子的方法。砂石样品用超纯水超声萃取并离心,上清液经固相萃取柱净化,并经0.22 μm水系PES滤
膜过滤,采用离子色谱法测定滤液中氟、氯、硫酸的含量,外标法定量。3种阴离子的质量浓度在0~50 mg/L范围内与色谱峰面积线性良好,线性相关系数均大于0.999。
检出限为1.921~2.599 μg/L,样品加标回收率为89.80%~99.80%,测定结果的相对标准偏差为0.27%~1.21%(n=6)。该方法能较准确地测试建设用砂石中的
氟离子、氯离子、硫酸根离子。
Abstract:A method for the determination of fluoride, chloride and sulfate ions in construction sand by ion chromatography with ultrasonic extraction
was established. The supernatant was purified by solid phase extraction column and filtered by 0.22 μm water system PES membrane. The contents of
fluorine, chlorine and sulfuric acid in the filtrate were determined by ion chromatography and quantified by external standard method. The mass
concentration of the 3 anions in the range of 0-50 mg/L had a good linear relationship with the chromatographic peak area, the correlation
coefficient were all more than 0.999, and the detection limits were 1.921-2.599 μg/L. The recoveries of the standard addition were 89.80%-99.80%,
and the relative relative standard deviations of determination results were 0.27%-1.21% (n=6). This method can accurately determine the
anions in the construction sand.
关键词:离子色谱法;氟离子;氯离子;硫酸根离子;建设砂石
Keywords:ion chromatography; fluoride ion; chloride ion; sulfate ion; construction sand
本文引用格式:
梁晨,郑秀瑾,张锦梅,等.超声萃取-离子色谱法测定建设用砂石中氟、氯、硫酸根离子[J].化学分析计量,2021,30(4):50.
Liang Chen,Zheng Xiujin,Zhang Jinmei,er al.Determination of fluorine,chlorine and sulfate ions in construction sand by ultrasonic extraction and ion chromatography[J].Chemical Analysis and Meterage,2021,30(4):50.
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