Results 221 to 230 of about 4,812,323 (280)

Development and Validation of an Isocratic HPLC Method for the Simultaneous Determination of Avobenzone and Tris-Biphenyl Triazine. [PDF]

ACS Omega
Miranda JA, da Cruz YF, Alencar ÉN, Oliveira WN, Soares DCF, Donovan MD, Egito EST.   +6 more
europepmc   +1 more source

Porous Copolymers of 1,4-Di(methacryloxymethyl)naphthalene (DMN) with Trimethylpropane Trimethacrylate (TRIM)-Synthesis, Characterization, and Post-Crosslinking Modification. [PDF]

Materials (Basel)
Maciejewska M, Gawdzik B.
europepmc   +1 more source

Chiral HPLC Separation of Phosphonothrixin and Phosphonate Derivatives and Electronic Circular Dichroism Characterization of the Isolated Enantiomers. [PDF]

Electrophoresis
Maalouf M, Knab M, Gessner L, Engelhardt M, Friedrich S, Gross H, Boeckler F, Hughes CC, Lämmerhofer M.   +8 more
europepmc   +1 more source

Validation of olive-castor oil (OL-C) blend as a bio-membrane model. [PDF]

RSC Adv
Adeyemo MA, Rufai BO, Fatokun AA, Idowu SO.   +3 more
europepmc   +1 more source

Retention of the stationary phase for high-speed countercurrent chromatography

AICHE Journal, 2007
AbstractHigh‐speed countercurrent chromatography (HSCCC) is an emerging technique for preparative purification of a wide variety of solutes. Retention of the stationary phase is a crucial variable which is used for the derivation of the column efficiency, peak resolution, and solute retention.
Chun-Xia Zhao, Chao-Hong He
exaly   +5 more sources

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Retention characteristics of a new butylimidazolium-based stationary phase

Analytical and Bioanalytical Chemistry, 2005
A new HPLC stationary phase has been synthesized based on the ionic liquid n-butylimidazolium bromide. Imidazolium was covalently immobilized on a silica substrate through an n-alkyl tether and the retention characteristics of the resulting stationary phase were evaluated systematically.
A M Stalcup
exaly   +3 more sources

Fabrication and evaluation of tetraazahexaphenylmacrocycle-bonded stationary phase with multiple retention mechanisms

Journal of Chromatography A, 2021
A 34-membered tetraazahexaphenylmacrocycle (N4Ph6) with a rigid π-conjugated moiety was chemically bonded to silica gel with 3-chloropropyltrimethoxysilane as the coupling agent to prepare a novel SiO2@N4Ph6 stationary phase. Several common organic analytes, including alkylbenzenes, polycyclic aromatic hydrocarbons, anilines, phenols, phthalates, and ...
Hailiang Zhao, Wenjie Zhao, Lijun He
exaly   +3 more sources

Effects of temperature on retention of chiral compounds on a ristocetin A chiral stationary phase

Journal of Chromatography A, 2002
The isocratic retention of enantiomers of chiral analytes, i.e. tryptophan, 1,2,3,4-tetrahydroisoquinoline and gamma-butyrolac tone analogs, was studied on a ristocetin A chiral stationary phase at different temperatures and with different mobile phase compositions, using the reversed-phase, polar-organic and normal-phase modes.
Daniel W Armstrong, Antal Peter
exaly   +3 more sources

Retention of opioids and their glucuronides on a combined zwitterion and hydrophilic interaction stationary phase

Journal of Chromatography A, 2008
A stationary phase combining zwitterionic ion chromatography and hydrophilic interaction chromatography (ZIC-HILIC) from SeQuant was evaluated for the chromatography of some opiates and their polar metabolites. The effects of mobile phase constitution on retention and resolution were extensively evaluated. Different aspects of mobile phase constitution
S, Vikingsson, R, Kronstrand, M, Josefsson   +2 more
openaire   +3 more sources