New Coated Graphite Potentiometric Sensor based on benzo-18-crown-6
Publish place: 20th Iranian Conference on the Chemistry of Physics
Publish Year: 1396
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
ISPTC20_262
تاریخ نمایه سازی: 2 تیر 1397
Abstract:
In this project, a highly selective calcium coated graphite electrode was prepared by benzo-18-crown-6 as an ionophore into plasticized polyvinylchloride (PVC) membrane. The best response characteristic was observed using the membrane composition of dioctyl phthalate (DOP) = 63.0 mg, PVC = 30.0 mg, sodiumtetraphenylborate (NaTPB) = 3.0 mg and benzo-18-crown-6 = 4.0 mg. The electrode has a fast response time of 10 s, with a satisfactory reproducibility and relatively long life time of 28 days without significant drift in potential. This electrode reveals a very good selectivity toward Ca2+ ion over a wide range of alkali, transition and heavy metal cations.
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Authors
Sh Lovineh
Department of Chemistry, khouzestan Science and Research Branch, Islamic Azad University, Ahvaz, Iran- Department of chemistry, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran