Author/Authors :
Kormosh، Zholt نويسنده , , Savchuk، Tanya نويسنده Volyn National University, Lutsk, Ukraine , , Bazel، Yaroslav نويسنده , , Korolchuk، Svitlana نويسنده Volyn National University, Lutsk, Ukraine , , Gech، Alexander نويسنده Volyn National University, Lutsk, Ukraine ,
Abstract :
A simple, precise, rapid and low-cost potentiometric method for the
determination of pentachlorophenol is proposed. A new pentachlorophenol-sensitive
electrode was constructed by incorporating the pentachlorophenol ion pair complex with
rhodamine 6G into graphite matrix. The electrode exhibited a linear response over the
concentration range of 1×10–5–5×10–2 mol/L, a detection limit of 1.7×10–6 (5.2×10–5) mol/L
with a Nernstian slope of 41±1 (68±1) mV/decade. The working pH range is 7.5–10.5. The
electrode is easily constructed, has fast response time (3–10 s) and can be used for the
period of six months without any considerable deterioration. The proposed sensor displays
good sensitivity for pentachlorophenol.
