...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Analytical chemistry >A Facile, Nonreactive Hydrogen Peroxide (H2O2) Detection Method Enabled by Ion Chromatography with UV Detector
【24h】

A Facile, Nonreactive Hydrogen Peroxide (H2O2) Detection Method Enabled by Ion Chromatography with UV Detector

机译：具有UV检测器的离子色谱（H 2 O 2 ）检测方法，通过离子色谱（H 2 ）检测方法。

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Hydrogen peroxide (H2O2) is ubiquitous in the natural environment, and it is now widely used for pollutant control in water and wastewater treatment processes. However, current analytical methods for H2O2 inevitably require reactions between H2O2 and other reactants to yield signals and are thus likely subjective to the interferences of coexisting colored, oxidative, and reductive compounds. In order to overcome these barriers, we herein for the first time propose to analyze H2O2 by ion chromatography (IC) using an ultraviolet (UV) detector. The proposal is based on two principles: first, that H2O2 can deprotonate to hydroperoxyl ion (HO2–) when eluent pH is higher than the acid-dissociation coefficient of H2O2 (pKa = 11.6); and second, that after separation from other compounds via IC column, H2O2 can be quantified by a UV detector. Under favorable operating conditions, this method has successfully achieved acceptable recoveries (>91%) of H2O2 dosed to ultrapure and natural waters, a calibration curve with R2 > 0.99 for a wide range of H2O2 concentrations from 0.1 to 50 mg/L and a method detection limit of 0.027 mg/L. In addition, this approach was shown to be capable of distinguishing H2O2 from anions (e.g., fluoride and chloride) and organics (e.g., glycolate) and monochloramine, suggesting that it is insensitive to many neighboring compounds as long as they do not react quickly with H2O2. Hence, this study proves the combination of IC and UV detector a facile and reliable method for H2O2 measurement.]]>
机译：<！[cdata [ src ='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/ancham/2017/ancham.2017.89.issue-21/acs.analchem.7b02831/ 20171101 /图像/介质/ ac-2017-02831h_0007.gif“>过氧化氢（H 2 O 2 ）在自然环境中普遍存在，现在广泛使用用于水和废水处理过程中的污染物控制。但是，H 2 O 2 的当前分析方法不可避免地需要H 2 O 2 和其他反应物之间的反应因此，产量信号并且可能是共存有色，氧化和还原化合物的干扰的主观。为了克服这些屏障，我们首次提出通过离子色谱法（IC）分析H 2 O 2 ，使用紫外线（UV）检测器。该提案基于两种原则：首先，H 2 O 2 可以使氢激过氧基离子（ho 2 - ）当洗脱液pH高于H 2 O 2 的酸解离系数时（p k a = 11.6）;其次，通过IC柱与其他化合物分离后，可以通过UV检测器量化H 2 O 2 。在有利的操作条件下，该方法成功地实现了可接受的回收率（> 91％）H 2 O 2 给ultrapure和天然水域，校准曲线为用于宽范围的H 2 O 2 浓度为0.1至50 mg / L和方法检测限制为0.027 mg /升。此外，该方法被证明能够区分H 2 O 2 从阴离子（例如，氟化物和氯化物）和有机物（例如，乙酸盐）和单氯胺，表明它对许多相邻化合物不敏感，只要它们不会与H 2 O 2 迅速反应。因此，本研究证明了IC和UV检测器的组合是H 2 O 2 测量的容易和可靠的方法。]>

著录项

  • 来源
    《Analytical chemistry》 |2017年第21期|共8页
  • 作者

    Mingrui Song; Junli Wang; Baiyang Chen; Lei Wang;

  • 作者单位

    Shenzhen Key Laboratory of Organic Pollution Prevention and Control State Key Laboratory of Urban Water Resource and Environment Harbin Institute of Technology (Shenzhen) China 518055;

    Shenzhen Key Laboratory of Organic Pollution Prevention and Control State Key Laboratory of Urban Water Resource and Environment Harbin Institute of Technology (Shenzhen) China 518055;

    Shenzhen Key Laboratory of Organic Pollution Prevention and Control State Key Laboratory of Urban Water Resource and Environment Harbin Institute of Technology (Shenzhen) China 518055;

    Shenzhen Key Laboratory of Organic Pollution Prevention and Control State Key Laboratory of Urban Water Resource and Environment Harbin Institute of Technology (Shenzhen) China 518055;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 分析化学;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号