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浙江大学学报(理学版)  2016, Vol. 43 Issue (3): 316-320    DOI: 10.3785/j.issn.1008-9497.2016.03.012
化学     
离子色谱法测定减水剂中的阴离子
朱彬和1,2, 倪承珠1,2, 赵训燕1,2, 郭伟强1, 朱岩1,2
1. 浙江大学 化学系, 浙江 杭州 310028;
2. 浙江大学 浙江省微量有毒化学物健康风险评估 技术研究重点实验室, 浙江 杭州 310028
Determination of anions in the water reducing agent by ion chromatograph
ZHU Binhe1,2, NI Chengzhu1,2, ZHAO Xunyan1,2, GUO Weiqiang1, ZHU Yan1,2
1. Department of Chemistry, Zhejiang University, Hangzhou 310028, China;
2. Zhejiang Provincial Key Laboratory of Health Risk Appraisal for Trace Toxic Chemicals, Zhejiang University, Hangzhou 310028, China
 全文: PDF(384 KB)  
摘要: 建立一种离子色谱法同时测定减水剂中的葡萄糖酸根、氯离子、硫酸根、硫代硫酸根.样品经过稀释、C18小柱预处理后直接进样.选用shodex52-4e阴离子交换柱分离样品,淋洗液为3.6mmol·L-1Na2CO3,柱温50℃,流速0.8mL·min-1,进样量7μL,抑制电导检测,外标法定量,当葡萄糖酸根、氯离子、硫酸根、硫代硫酸根的质量分数分别为5.0~100.0,0.1~30.0,1.0~50.0,1.0~50.0mg·L-1时,与色谱峰面积呈良好的线性关系(r≥0.9991),相对标准偏差(n=7)均小于2.5%,检出限在50.23~13.44μg·L-1.将该方法应用于减水剂阴离子的测定,加标回收率在80.6%~113.9%,方法选择性高、灵敏度好且操作简便.
关键词: 离子色谱法减水剂阴离子    
Abstract: A novel method is presented for the simultaneous determination of gluconate, chloride, sulfate and thiosulfate in the water reducing agent using ion chromatography with suppressed conductivity detector was eastablished. The sample is diluted with water and filtered through C18 pretreatment column before injection. The separation is performed on shodex 52-4e anion exchange column with 3.6 mmol·L-1 Na2CO3 at flow rate of 0.8 mL· min-1. The sample injection volume is 7 μL. Under the optimum conditions, it shows the good linear relationships (r≥0.999 1) between the mass concentration and the peak areas when the concentrations of gluconate, chloride, sulfate and thiosulfate were in the range of 5.0 to 100.0,0.1 to 30.0,1.0 to 50.0,1.0 to 50.0 mg· L-1, respectively. The recovery rate ranged from 80.6% to 113.9% with the relative standard deviations (RSDs) within 2.5% (n=7).What's more, detection limits calculated at S/N=3 are within 50.23 and 13.44 μg· L-1. The method has been applied to detect the anions in the water reducing agent, which shows high selectivity, sensitivity and accuracy, meanwhile easy to implement.
Key words: ion chromatograph    water reducing agent    anion
收稿日期: 2015-06-29 出版日期: 2016-03-01
CLC:  O657.7  
基金资助: 浙江省自然科学基金资助项目(Y4110532).
通讯作者: 朱岩,ORCID:http://orcid.org/0000-0001-5481-3929,E-mail:zhuyan@zju.edu.cn.     E-mail: zhuyan@zju.edu.cn
作者简介: 朱彬和(1991-),ORCID:http://orcid.org/0000-0003-0384-1377,女,硕士研究生,主要从事离子色谱研究.
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引用本文:

朱彬和, 倪承珠, 赵训燕, 郭伟强, 朱岩. 离子色谱法测定减水剂中的阴离子[J]. 浙江大学学报(理学版), 2016, 43(3): 316-320.

ZHU Binhe, NI Chengzhu, ZHAO Xunyan, GUO Weiqiang, ZHU Yan. Determination of anions in the water reducing agent by ion chromatograph. Journal of ZheJIang University(Science Edition), 2016, 43(3): 316-320.

链接本文:

https://www.zjujournals.com/sci/CN/10.3785/j.issn.1008-9497.2016.03.012        https://www.zjujournals.com/sci/CN/Y2016/V43/I3/316

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