A microgap impedance sensor for the determination of trace water in organic solvents

被引:18
|
作者
Liang, Jie [1 ,2 ,3 ]
Chen, Bao-Qin [1 ,2 ]
Long, Yi-Tao [1 ,2 ]
机构
[1] E China Univ Sci & Technol, Shanghai Key Lab Funct Mat Chem, Shanghai 200237, Peoples R China
[2] E China Univ Sci & Technol, Dept Chem, Shanghai 200237, Peoples R China
[3] Shanghai Normal Univ, Dept Chem, Shanghai 200234, Peoples R China
关键词
POLYELECTROLYTE; SPECTROSCOPY; CONDUCTANCE; COMPOSITE; FILMS;
D O I
10.1039/c1an15263g
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
A microgap impedance sensor with a 50 mm gap was developed for the determination of trace water in organic solvents by coating poly(dimethyldiallylammonium chloride) (PDMDAAC) and ferricyanide/ferrocyanide composite materials on indium tin oxide (ITO). The electrochemical properties of the composite materials were investigated with cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). We observed that the impedance response of the sensor depended on the concentration of trace water in the organic solvents. Under optimized conditions, the linear range for the determination of trace water was 0-0.06% for chloroform (CHCl3), 0-0.10% for acetone (CH3COCH3), 0-0.12% for tetrahydrofuran (THF), and 0-0.10% for acetonitrile (CH3CN), and the detection limits were 0.65, 1.54, 0.61, and 1.72 ppm, respectively. The results obtained from the impedance sensors were comparable to those obtained using the traditional Karl Fischer method.
引用
收藏
页码:4053 / 4058
页数:6
相关论文
共 50 条
  • [21] CONCENTRATION AND DETERMINATION OF TRACE ORGANIC POLLUTANTS IN WATER
    CHANG, RC
    FRITZ, JS
    TALANTA, 1978, 25 (11-1) : 659 - 663
  • [22] A sensitive fluorescent sensor for the detection of trace water in organic solvents based on carbon quantum dots with yellow fluorescence
    Wei, Jianfei
    Li, Haikuo
    Yuan, Ye
    Sun, Chenying
    Hao, Dan
    Zheng, Guo
    Wang, Rui
    RSC ADVANCES, 2018, 8 (65): : 37028 - 37034
  • [23] DETERMINATION OF WATER IN ORGANIC-SOLVENTS AND TRANSFORMER OILS
    BONDAREVSKAYA, EA
    KROPOTOVA, ED
    MASHKO, TE
    JOURNAL OF ANALYTICAL CHEMISTRY OF THE USSR, 1975, 30 (03): : 473 - 475
  • [24] Spectrophotometric determination of water content in alcohol organic solvents
    Hai-Xin Bai
    Xiu-Rong Yang
    JOURNAL OF THE CHINESE CHEMICAL SOCIETY, 2007, 54 (03) : 619 - 624
  • [25] Optical sensors for determination of water in the organic solvents: a review
    Abolghasem Jouyban
    Elaheh Rahimpour
    Journal of the Iranian Chemical Society, 2022, 19 : 1 - 22
  • [26] Spectrophotometric determination of micro amount of water in organic solvents
    Liu, XJ
    Li, N
    Zhao, FL
    Li, K
    CHINESE JOURNAL OF ANALYTICAL CHEMISTRY, 2002, 30 (05) : 583 - 585
  • [27] SPECTROPHOTOMETRIC DETERMINATION OF WATER IN ORGANIC SOLVENTS WITH SOLVATOCHROMIC DYES
    KUMOI, S
    OYAMA, K
    YANO, T
    KOBAYASHI, H
    UENO, K
    TALANTA, 1970, 17 (04) : 319 - +
  • [28] Optical sensors for determination of water in the organic solvents: a review
    Jouyban, Abolghasem
    Rahimpour, Elaheh
    JOURNAL OF THE IRANIAN CHEMICAL SOCIETY, 2022, 19 (01) : 1 - 22
  • [29] Fabrication of a novel electrochemical sensor for the determination of water in some organic solvents based on naphthalene conducting polymers
    Lang, Safoura Bakhtiari Haft
    Azizi, Elmira
    Arjomandi, Jalal
    Nematollahi, Davood
    Massah, Ahmad Reza
    NEW JOURNAL OF CHEMISTRY, 2018, 42 (18) : 14926 - 14932
  • [30] DETERMINATION OF MICROGRAM QUANTITIES OF WATER IN ORGANIC-SOLVENTS USING A CARBON-DIOXIDE GAS SENSOR
    HASSAN, SSM
    AHMED, MA
    ANALYTICAL LETTERS, 1991, 24 (05) : 817 - 826