Bonded phase of silica and carboalkoxyalkyl silanes for solid ph

Details Bonded phase of silica and carboalkoxyalkyl silanes for solid ph Bonded phase of silica and carboalkoxyalkyl silanes for solid ph

1986-09-08

1987-07-14

Therkorn, Ernest G.

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210656, 436178, 436527, 436543, 436816, 436901, 530395, 530413, 530417, 530834, B01D 1508

Patent

active

046801200

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.

REFERENCES:
patent: 3935299 (1976-01-01), Kiselev
patent: 4056488 (1977-11-01), Mitchell
patent: 4276061 (1981-06-01), Nestrick
patent: 4324689 (1982-04-01), Shah
patent: 4329254 (1982-05-01), Chmielowiec
patent: 4537759 (1985-08-01), Walker
patent: 4540486 (1985-09-01), Ramsden
patent: 4578193 (1986-03-01), Shepherd
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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