标题:Determination of long-chained alkylimidazolium ionic liquids based on the hypochromic effect
作者:Yu Tong;Hongxiao Yang;Yixian Huang
作者机构:[Tong, Yu] Key Laboratory for Special Functional Aggregated Materials of Education Ministry, School of Chemistry and Chemical Engineering, Shandong Un 更多
通讯作者:Yang, Y
通讯作者地址:[Yang, YZ]Shandong Univ, Sch Chem & Chem Engn, Educ Minist, Key Lab Special Funct Aggregated Mat, Jinan 250100, Peoples R China.
来源:Analytical methods
出版年:2014
卷:6
期:11
页码:3758-3762
DOI:10.1039/c4ay00594e
摘要:The hypochromic effect of bromocresol green (BCG) resulted from long-chained imidazolium ionic liquids was investigated. The hypochromic effect may be caused by the formation of the neutral complex [C_nmim]2~+[BCG]~(2-) via electrostatic interaction and hydrophobic interaction. Based on the spectral characteristics, a new method for determination of long-chained imidazolium ionic liquids is developed. The proposed method can be performed using a UV-vis spectrophotometer, at the optimum λ_(min). Beer\'s law is obeyed in the concentration range of 0.004-0.04 mmol L~(-1) for [C_(14)mim]Br and [C_(16)mim]Cl, and the detection limits are 0.0011 and 0.00095 mmol L~(-1) for [C_(14)mim]Br and [C_(16)mim]Cl, respectively. Meanwhile, precision, accuracy and tolerance are also very good. The method is fast, economical and does not require organic solvents; it can be applied for determination of long-chained imidazolium ionic liquids.
收录类别:EI;SCOPUS;SCIE
WOS核心被引频次:4
Scopus被引频次:4
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-84900838075&doi=10.1039%2fc4ay00594e&partnerID=40&md5=fca79d5a219604f4c73835abd6d50e03
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