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学科主题: 物理化学
题名: Using ratiometric indicator-displacement assays in semi-quantitative colorimetric determination of chloride, bromide, and iodide anions
作者: Shen, Zheng1;  Li, Hui1;  Feng, Liang1
通讯作者: 冯亮
刊名: ANALYST
发表日期: 2011
DOI: 10.1039/c1an15679a
卷: 136, 期:23, 页:5025-5029
收录类别: SCI
文章类型: Article
部门归属: 1
项目归属: 105
产权排名: 1,1
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Analytical
摘要: Using ratiometric indicator-displacement assays in semi-quantitative colorimetric determination of chloride, bromide, and iodide anions
研究领域[WOS]: Chemistry
英文摘要: A ratiometric indicator-displacement assay (RIDA) array has been developed for the semi-quantitative colorimetric determination of chloride, bromide, and iodide anions. Determinations of these halide anions follow the displacement reaction using the chelate compound of (2-(3,5-dibromo-2-pyridylazo)-5-(diethylamino)phenol) (3,5-Br2-PADAP) and heavy metal salts as colorimetric reagent. Different from regular silver nitrate titrations, the chloride, bromide, and iodide anions compete with the 3,5-Br2-PADAP ligand and change the colour of the 3,5-Br2-PADAP-metal chelate compound dramatically. These clearer colour changes make the semi-quantitative colorimetric determination of chloride, bromide, and iodide anions possible. The colour changes are imaged using a conventional flatbed scanner, and digitized. After statistical analysis, these colour changes in the RIDA array provide facile identification of chloride, bromide, and iodide anions at a wide concentration range (10 mu M to 10 mM) without any misclassification. The RIDA array is able to discriminate without misclassifications among seven concentrations of chloride, bromide, and iodide anions. No shelf life issue exists because the chelating compounds react with halide anions directly without any pre-immobilizations.
关键词[WOS]: FLOW-INJECTION DETERMINATION ;  ALPHA-AMINO-ACIDS ;  SENSOR ARRAY ;  ION ;  COOPERATIVITY ;  PERSISTENT ;  COMPLEX ;  SERUM ;  WATER ;  NOSE
语种: 英语
WOS记录号: WOS:000296616800021
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/115455
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Lab Instrumentat & Analyt Chem, Key Lab Separat Sci Analyt Chem CAS, Dalian 116023, Liaoning, Peoples R China

Recommended Citation:
Shen, Zheng,Li, Hui,Feng, Liang. Using ratiometric indicator-displacement assays in semi-quantitative colorimetric determination of chloride, bromide, and iodide anions[J]. ANALYST,2011,136(23):5025-5029.
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