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Development of Polymeric Resin Ion‐exchanger Based Chloride Ion‐selective Electrode for Monitoring Chloride Ion in Environmental Water
Author(s) -
Cheng Cheanyeh,
Huang ZhuMing,
Chung WenYaw,
Pijanowskad Dorota G.,
Dawgul Marek
Publication year - 2012
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201100226
Subject(s) - chemistry , chloride , ionophore , detection limit , ion selective electrode , vinyl chloride , ion chromatography , electrode , divinylbenzene , inorganic chemistry , plasticizer , ion exchange , polyvinyl chloride , membrane , ion , copolymer , chromatography , selectivity , styrene , polymer , organic chemistry , catalysis , biochemistry
A chloride ion‐selective electrode (ISE) membrane was developed by using a copolymeric ion‐exchanger resin (trimethyl ethenyl quaternary ammonium chloride polystyrene‐divinylbenzene copolymer resin, TMEQAC PSDVB), the ionophore ({μ‐[4,5‐Dimethyl‐3,6‐bis(dodecyloxy)‐1,2‐phenylene]}bis(mercury chloride), ETH9033), the plasticizer (bis(2‐ethylhexyl) sebacate, DOS), and the membrane substrate (polyvinylchloride, PVC). At 25 °C, the electrode exhibited an ideal Nernstian response of 59.2 mV/decade with the linear calibration concentration range from 1.0 × 10 −4 ‐1.0 × 10 −2 M ( r 2 = 0.9930). The limit of detection was 2.45 ppm (6.9 × 10 −2 mM) and the measurement response time was less than 10 seconds. The working temperature range of electrode was 10‐45 °C. The working pH range for chloride ion measurement was 2.0‐11.0. Among the various anions examined in this work, only I − , SCN − , and MnO 4 − ions show significant interference to the electrode measurement. The chloride ISE can be used at least 72 days. The determination of chloride ion content in three kinds of environmental water sample with the electrode method was accurate (92‐95%) and precise (RSD < 4.4%) and did not show significance difference from the high‐performance liquid chromatography method.