Keywords b-Cyclodextrin Impedancemetric sensor m-cresol Polymeric membrane Equivalent circuit Introduction Environmental contamination by hazardous and toxic chemicals is considered to be a major problem all over the world today . Phenolic compounds, which are regarded as a priority contaminant by the United States Environmental Protection Agency (USEPA), are major toxic pollutants that are commonly observed in the efﬂuent of various industrial waste waters [2–7]. Among such compounds, cresols have been found in ground waters below wood preservation plant areas, in gasworks sites, and in leachates from landﬁlls . Meta-cresol (m-cresol) is a methylated derivative of phenol and is produced commercially by chemical synthesis or by distillation from petroleum or coal tar . Industries such as pulp and paper mills, textile mills, coal gasiﬁcation units, herbicides and fungicides production, etc., are mainly responsible for discharging m-cresol in their aqueous efﬂuents . The analysis of m-cresol-like chemicals in use for a long period of time has evolved from a number of nonspeciﬁc colorimetric methods to more selective separation techniques using gas chromatography (GC) or high-performance liquid chromatography (HPLC) . The complexity, high costs, and large size of these instruments are the reasons that led us to develop
Research on Chemical Intermediates – Springer Journals
Published: May 10, 2016
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