DICP OpenIR
Subject Area物理化学
Colorimetric sensing of anions in water using ratiometric indicator-displacement assay
Feng, Liang; Li, Hui; Li, Xiao; Chen, Liang; Shen, Zheng; Guan, Yafeng; Feng L(冯亮); Guan YF(关亚风)
KeywordColorimetric Anion Sensing Ratiometric Indicator-displacement Assay Principal Component Analysis Hierarchical Clustering Analysis
Source PublicationANALYTICA CHIMICA ACTA
2012-09-19
DOI10.1016/j.aca.2012.06.041
Volume743Pages:1-8
Indexed BySCI
SubtypeArticle
Department1
Funding Project105
Contribution Rank1,1
WOS SubjectChemistry, Analytical
WOS Research AreaChemistry
WOS KeywordION-SELECTIVE ELECTRODES ; ALPHA-AMINO-ACIDS ; ENANTIOMERIC EXCESS ; SENSOR ARRAY ; RECOGNITION ; NOSE
AbstractThe analysis of anions in water presents a difficult challenge due to their low charge-to-radius ratio, and the ability to discriminate among similar anions often remains problematic. The use of a 3 x 6 ratiometric indicator-displacement assay (RIDA) array for the colorimetric detection and identification of ten anions in water is reported. The sensor array consists of different combinations of colorimetric indicators and metal cations. The colorimetric indicators chelate with metal cations, forming the color changes. Upon the addition of anions, anions compete with the indicator ligands according to solubility product constants (K-sp). The indicator-metal chelate compound changes color back dramatically when the competition of anions wins. The color changes of the RIDA array were used as a digital representation of the array response and analyzed with standard statistical methods, including principal component analysis and hierarchical clustering analysis. No confusion or errors in classification by hierarchical clustering analysis were observed in 44 trials. The limit of detection was calculated approximately, and most limits of detections of anions are well below mu M level using our RIDA array. The pH effect, temperature influence, interfering anions were also investigated, and the RIDA array shows the feasibility of real sample testing. (C) 2012 Elsevier B.V. All rights reserved.
Language英语
WOS IDWOS:000308054100001
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/118315
Collection中国科学院大连化学物理研究所
Corresponding AuthorFeng L(冯亮); Guan YF(关亚风)
AffiliationChinese Acad Sci, Dalian Inst Chem Phys, Key Lab Separat Sci Analyt Chem, Lab Instrumentat & Analyt Chem, Dalian 116023, Liaoning, Peoples R China
Recommended Citation
GB/T 7714
Feng, Liang,Li, Hui,Li, Xiao,et al. Colorimetric sensing of anions in water using ratiometric indicator-displacement assay[J]. ANALYTICA CHIMICA ACTA,2012,743:1-8.
APA Feng, Liang.,Li, Hui.,Li, Xiao.,Chen, Liang.,Shen, Zheng.,...&关亚风.(2012).Colorimetric sensing of anions in water using ratiometric indicator-displacement assay.ANALYTICA CHIMICA ACTA,743,1-8.
MLA Feng, Liang,et al."Colorimetric sensing of anions in water using ratiometric indicator-displacement assay".ANALYTICA CHIMICA ACTA 743(2012):1-8.
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