Bonded phase of silica and carboalkoxyalkyl silanes for solid ph

Catalyst – solid sorbent – or support therefor: product or process – Solid sorbent – Silicon containing

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2101982, 2105021, 55 67, 55386, 556438, B01J 2022

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active

046409092

ABSTRACT:
The reaction product of silica gel or controlled pore glass and carboalkoxyalkyl silanes are suitable for use as packing in solid phase extraction columns for cleanup of urine samples for analysis of cannabinoids.

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M. Elsohly et al, Analysis of the Major Metabolite of .DELTA..sup.9 -Tetrahydrocannabinol in Urine, Journal of Analytical Toxicology, vol. 7, Nov./Dec. 1983, pp. 262-264.
D. Black et al, Urine Cannabinoid Analysis: An Integrated Multi-Method Approach, Journal of Analytical Toxicology, vol. 8, Sep./Oct. 1984, pp. 224-227.

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