Naslov
Potentiometric determination of micromolar level of ethoxylated nonionic surfactants in effluents

Autori
Madunić-Čačić, Dubravka ; Sak-Bosnar, Milan ; Grabarić Zorana

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
XIX. hrvatski skup kemičara i kemijskih inženjera / Danko Škare - Opatija : Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI), 2005

ISBN
953-6894-23-8

Skup
XIX. Croatian Meeting of Chemists and Chemical Engineers

Mjesto i datum
Opatija, Hrvatska, 2005

Vrsta sudjelovanja
Poster

Vrsta recenzije
Domaća recenzija

Ključne riječi
pseudocationic complexes; nonionic surfactant; effluents; sensor

Sažetak
Nonionic surfactants are surface-active compounds with hydrophobic and hydrophilic moieties. Commercial nonionic surfactants are normally a mixture of homologous structures composed of alkyl chains that differ in the number of carbons and hydrophilic moieties that differ in the number of ethylene oxide (ethoxylate, EO), propylene oxide (propoxylate, PO), and butylene oxide (butoxylate, BO) units. Almost all the analytical methods for determination of polyethoxylated nonionic surfactants are based on the formation of tetraphenylborate salts of pseudocationic complexes of nonionics surfactants with some metal cations (mainly barium). Barium ion forms pseudocationic complexes with ethoxylated nonionic surfactants (EONS.) Commercial NIO electrode was used for determination of end point in potentiometric titrations of nonionic surfactants in model solutions and effluents.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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