Liquid purification or separation – With means to add treating material – Chromatography
Patent
1989-02-21
1992-08-11
Dawson, Robert A.
Liquid purification or separation
With means to add treating material
Chromatography
2105021, 210656, 436178, 436527, 436816, 436901, 502407, 530834, 552 4, 552 5, 556427, B01D 1508
Patent
active
051376261
ABSTRACT:
The bonded phases generated from the reaction of aliphatic and aromatic azidosilanes with silica gel are suitable for use as packings in solid phase extraction columns for cleanup of urine samples for analysis of acid metabolites of cannabinoids. Such bonded phases are unique in their ability to selectively retain the acid metabolites of cannabinoids from a urine sample matrix.
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Gisch Daryl J.
Parry Ritchard C.
Dawson Robert A.
Kim Sun Uk
Rohm and Haas Company
Taylor, III John E.
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