Naslov
Design and properties of flow-through electrode with AgI-based membrane hydrophobized by PTFE ; application to flow-injection determination of thiourea

Autori
Komljemović, Josipa ; Radić, Njegomir

Izvornik
Sensors and Actuators B - Chemical (0925-4005) 24 (1995), 1-3; 312-316

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
flow-injection analysis; membrane electrode; thiourea

Sažetak
A multi-purpose solid-state iodide-selective electrode is constructed as a compact tubular sensor, the sensing hole has 2.0 mm i.d. and 1.2 mm length. The behavior, suitability and incorporation of the tubular electrode into the conduit of a flow-injection system are described. Application of the tubular electrode is exemplified by the determination of thiourea in 0.1 M HClO4 as supporting electrolyte by using of a flow-injection system. A rectilinear calibration graph is obtained by plotting the peak height versus concentration of thiourea. The detection limit is 20  M under optimized flow conditions (1.2 ml min-1, 200  L "samples, 10-5 M silver ions in the carrier stream).

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA