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Titolo:
Synthesis, characterization, and chromatographic evaluation of titanium tetrabutoxide-modified silica as a support for HPLC-RP separations in alkaline mobile phases
Autore:
Silva, RB; Gushikem, Y; Collins, CH;
Indirizzi:
Univ Estadual Campinas, Inst Quim, BR-13083970 Campinas, SP, Brazil Univ Estadual Campinas Campinas SP Brazil BR-13083970 BCpinas, SP, Brazil
Titolo Testata:
JOURNAL OF SEPARATION SCIENCE
fascicolo: 1, volume: 24, anno: 2001,
pagine: 49 - 54
SICI:
1615-9314(200101)24:1<49:SCACEO>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Soggetto:
PERFORMANCE LIQUID-CHROMATOGRAPHY; STATIONARY PHASES; CHEMICAL CHARACTERIZATION; ZIRCONIZED SILICA; AMINO-ACIDS; COLUMN; STABILITY; RADIATION; POLY(METHYLOCTYLSILOXANE); BUFFERS;
Keywords:
titanium modified silica; poly(methyloctylsiloxane) stationary phases; high performance liquid chromatography-HPLC; radiation immobilization; high pH mobile phase;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
33
Recensione:
Indirizzi per estratti:
Indirizzo: Collins, CH Univ Estadual Campinas, Inst Quim, Caixa Postal 6154, BR-13083970 Campinas, SP, Brazil Univ Estadual Campinas Caixa Postal 6154 Campinas SP Brazil BR-13083970 BC
Citazione:
R.B. Silva et al., "Synthesis, characterization, and chromatographic evaluation of titanium tetrabutoxide-modified silica as a support for HPLC-RP separations in alkaline mobile phases", J SEP SCI, 24(1), 2001, pp. 49-54

Abstract

Gamma radiation was used to immobilize poly(methyloctylsiloxane) (PMOS) onto the surface of silica particles titanized by reaction with titanium tetrabutoxide. The irradiated particles were extracted with CH2Cl2 and subsequently packed into HPLC columns for testing. The PMOS- based stationary phases were tested chromatographically after each of a series of washings with pH 7 and pH 12 MeOH:NaOH(aq) 70:30 (v/v) mobile phases. Very slight decreases in column efficiency or retention time and no evidence of support dissolution were observed with either mobile phase.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/04/20 alle ore 20:51:59