Ageing processes of alkyl bonded phases in HPLC; a chromatographic and spectroscopic approach

H.A. Claessens; C.A.M.G. Cramers; J.W. Haan, de; F.A.H. Otter, den; L.J.M. Ven, van de; P.J. Andree; G.J. Jong, de; N. Lammers; J. Wijma; J. Zeeman

doi:10.1007/BF02263215

Ageing processes of alkyl bonded phases in HPLC; a chromatographic and spectroscopic approach

H.A. Claessens, C.A.M.G. Cramers, J.W. Haan, de, F.A.H. Otter, den, L.J.M. Ven, van de, P.J. Andree, G.J. Jong, de, N. Lammers, J. Wijma, J. Zeeman

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Abstract

Laboratory use of HPLC columns packed with C8 and C18 bonded phases leads to changes in selectivities and retention volumes. FTIR,1H NMR of hydrolysed bonded phases and solid state13C- and29Si NMR were applied to characterize the materials. The results of the various techniques are in fair agreement except solid state NMR. Loss of silane and hydrolysis of surface siloxane groups have been observed for the C8 bondes phase, while for the C18 material the latter process seems to dominate. The solid state NMR results have been tentatively explained in terms of changing chain arrangements and mobilities.

Original language	English
Pages (from-to)	582-586
Journal	Chromatographia
Volume	20
Issue number	10
DOIs	https://doi.org/10.1007/BF02263215
Publication status	Published - 1985

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title = "Ageing processes of alkyl bonded phases in HPLC; a chromatographic and spectroscopic approach",

abstract = "Laboratory use of HPLC columns packed with C8 and C18 bonded phases leads to changes in selectivities and retention volumes. FTIR,1H NMR of hydrolysed bonded phases and solid state13C- and29Si NMR were applied to characterize the materials. The results of the various techniques are in fair agreement except solid state NMR. Loss of silane and hydrolysis of surface siloxane groups have been observed for the C8 bondes phase, while for the C18 material the latter process seems to dominate. The solid state NMR results have been tentatively explained in terms of changing chain arrangements and mobilities.",

author = "H.A. Claessens and C.A.M.G. Cramers and {Haan, de}, J.W. and {Otter, den}, F.A.H. and {Ven, van de}, L.J.M. and P.J. Andree and {Jong, de}, G.J. and N. Lammers and J. Wijma and J. Zeeman",

year = "1985",

doi = "10.1007/BF02263215",

language = "English",

volume = "20",

pages = "582--586",

journal = "Chromatographia",

issn = "0009-5893",

publisher = "Springer",

number = "10",

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TY - JOUR

T1 - Ageing processes of alkyl bonded phases in HPLC; a chromatographic and spectroscopic approach

AU - Claessens, H.A.

AU - Cramers, C.A.M.G.

AU - Haan, de, J.W.

AU - Otter, den, F.A.H.

AU - Ven, van de, L.J.M.

AU - Andree, P.J.

AU - Jong, de, G.J.

AU - Lammers, N.

AU - Wijma, J.

AU - Zeeman, J.

PY - 1985

Y1 - 1985

N2 - Laboratory use of HPLC columns packed with C8 and C18 bonded phases leads to changes in selectivities and retention volumes. FTIR,1H NMR of hydrolysed bonded phases and solid state13C- and29Si NMR were applied to characterize the materials. The results of the various techniques are in fair agreement except solid state NMR. Loss of silane and hydrolysis of surface siloxane groups have been observed for the C8 bondes phase, while for the C18 material the latter process seems to dominate. The solid state NMR results have been tentatively explained in terms of changing chain arrangements and mobilities.

AB - Laboratory use of HPLC columns packed with C8 and C18 bonded phases leads to changes in selectivities and retention volumes. FTIR,1H NMR of hydrolysed bonded phases and solid state13C- and29Si NMR were applied to characterize the materials. The results of the various techniques are in fair agreement except solid state NMR. Loss of silane and hydrolysis of surface siloxane groups have been observed for the C8 bondes phase, while for the C18 material the latter process seems to dominate. The solid state NMR results have been tentatively explained in terms of changing chain arrangements and mobilities.

U2 - 10.1007/BF02263215

DO - 10.1007/BF02263215

M3 - Article

SN - 0009-5893

VL - 20

SP - 582

EP - 586

JO - Chromatographia

JF - Chromatographia

IS - 10

ER -

Ageing processes of alkyl bonded phases in HPLC; a chromatographic and spectroscopic approach

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