Sorbent for use in process of solid phase extraction

Details Sorbent for use in process of solid phase extraction Sorbent for use in process of solid phase extraction

2007-12-04

2007-12-04

Barry, Chester T. (Department: 1724)

Catalyst, solid sorbent, or support therefor: product or process

Solid sorbent

Organic

C210S692000

Reexamination Certificate

active

11117671

ABSTRACT:
A sorbent comprising a spherical, highly porous polymer with specific hydrophobic-hydrophilic properties, specific pore volume and its distribution, as well as a method of solid phase extraction using said sorbent. The sorbent is produced by suspension polymerization of at least one hydrophilic monomer and at least one hydrophobic monomer, where the hydrophilic monomer comprises an imidazole moiety and the hydrophobic monomer is a mixture of isomeric divinylbenzene monomers and isomeric ethylvinylbenzene monomers. The sorbent has a pore diameter range from 5 Å to 1000 Å, an average pore diameter of 50 Å to 250 Å, and a pore volume from 1 ml/g to 2 ml/g comprising 15% to 25% micropores, 50% to 80% mesopores, and 5% to 30% macropores. Solid phase extraction columns and plates packed with the sorbent of this invention provide reliable high recoveries for a broad spectrum of analytes with various polarity, even if the sorbent is dried out multiple times during the extraction.

REFERENCES:
patent: 4202775 (1980-05-01), Abe et al.
patent: 2003/0027879 (2003-02-01), Davankov et al.
patent: 2006/0058413 (2006-03-01), Leistner et al.
patent: 100 06 590 (2001-08-01), None
patent: 0 234 129 (1987-09-01), None
patent: 0 059 565 (1994-03-01), None
patent: WO 2004/060554 (2004-07-01), None
Oasis Sample Extraction Products, Waters Inc., P/N 720000606EN, (2003).
Römpp Chemie Lexikon, Thieme Verlag, Stuttgart New York, (1995).
Pielichowski J.J., Puszynski A.A., Technologia Tworzyw Sztucznych, Wydawnictwa WNT, Warszawa/Poland (1994).
John Wiley & Sons, Inc., “Sample Preparation Techniques in Analytical Chemistry”, 2003, pp. 78-138, edited by: Somenath Mitra, Department of Chemistry and Environmental Science, New Jersey Institute of Technology.

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