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日用化学工业（中英文）

日用化学工业 ›› 2015, Vol. 45 ›› Issue (4): 230-232.doi: 10.13218/j.cnki.csdc.2015.04.012

• 分析与检测 • 上一篇    下一篇

离子色谱法测定氧化胺中的亚硝酸盐和硝酸盐

刘振华, 张涌   

  1. 广州花语精细化工有限公司,广东 广州 510555
  • 发布日期:2019-04-02
  • 作者简介:刘振华(1988-),男,江苏人,本科,电话:15813393114,E-mail:zhenhualiu1988@126.com。

Determination of nitrate salts and nitrite salts in amine oxides by ion chromatography

LIU Zhen-hua, ZHANG Yong   

  1. Guangzhou Flower’s Song Fine Chemical Co.,Ltd.,Guangzhou,Guangdong 510555,China
  • Published:2019-04-02

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摘要： 建立了测定氧化胺中亚硝酸盐和硝酸盐的离子色谱分析方法。样品使用IC-C18反相吸附柱和0.45 μm的微孔水系滤膜处理后,经4.0 mmol/L Na2CO3和1.2 mmol/L NaHCO3混合淋洗液载入高性能阴离子专用色谱分析柱,并通过抑制型电导检测器检测。结果表明:NO2-和NO3-在质量浓度0.1~10.0 mg/L内线性关系良好,相关系数R2＞0.999 9;检出限分别为0.035和0.028 mg/L;相对标准偏差(RSD,n=7)为0.46%~2.24%;回收率为94.3%~102.5%。该方法具有简便、快速、准确、高效的特点,灵敏度高,安全实用,满足工业分析的要求。

关键词: 氧化胺, 离子色谱法, 亚硝酸盐, 硝酸盐

Abstract: A method for the simultaneous determination of nitrate salts and nitrite salts in amine oxides by ion chromatography was established.The amine oxide sample was pre-treated with IC-C18 reverse phase adsorption column and 0.45 μm micro-pore filter membrane,and then loaded into a high-performance anion exchange column with a mixed solution composed of 4.0 mmol/L Na2CO3 and 1.2 mmol/L NaHCO3 as eluant and detected with a suppressed conductivity detector.Results showed that good linear relationship displays within the range of nitrate and nitrite mass concentration between 0.1-10.0 mg/L with correlation coefficients (R2) more than 0.999 9.The detection limits of nitrate and nitrite were identified as 0.035 and 0.028 mg/L respectively.The relative standard deviations (RSD,n=7) lie 0.46%-2.24%.The spiked recoveries lie 94.3%-102.5%.This method has the features of simple,rapid,accurate and efficient.It is a high sensitive,safe and practical method,can meet the requirements of technical analysis.

Key words: amine oxides, ion chromatography, nitrate, nitrite

中图分类号: 

  • TQ423.3