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The Effect of Alkyl Length on the Analytical Signal of Monoalkylethers of Butylene Oxide‐Ethylene Oxide Block Copolymers in Adsorptive Stripping Tensammetry
Author(s) -
Lukaszewski Z.,
Chlebicki J.,
Nowak E. W.,
Szymanski A.
Publication year - 2001
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/1521-4109(200105)13:8/9<775::aid-elan775>3.0.co;2-#
Subject(s) - ethylene oxide , stripping (fiber) , copolymer , oxide , alkyl , block (permutation group theory) , ethylene , materials science , poly ethylene , chemistry , inorganic chemistry , organic chemistry , catalysis , metallurgy , polymer , mathematics , composite material , geometry
Monoalkylethers of butylene oxide – ethylene oxide block copolymers (ABE) belong to nonionic surfactants. ABE are electroinactive and do not contain chromophoric groups. Therefore, the number of available analytical methods for ABE determination is very limited. Tensammetry provides an opportunity to increase the number of available analytical methods. A series of four surfactants corresponding to the formula: RO[CH 2 CH(C 2 H 5 )O] 3 (CH 2 CH 2 O) 10 H where R= n ‐C 10 H 21 (C10B3E10), n ‐C 8 H 17 (C8B3E10), n ‐C 6 H 13 (C6B3E10) or n ‐C 4 H 9 (C4B3E10), were investigated under the conditions of adsorptive stripping tensammetry (AdST). The morphology of tensammetric peaks, as well as peak height dependences on the concentration of a corresponding surfactant, preconcentration time and potential were investigated. All four surfactants form negative tensammetric peaks roughly between −1.6 and −1.7 V. The peak height follows the sequence: C4B3E10≈C6B3E10≪C10B3E10