Chemistry: analytical and immunological testing – Metal or metal containing
Patent
1991-11-14
1993-09-07
Housel, James C.
Chemistry: analytical and immunological testing
Metal or metal containing
436 74, 436161, 436174, 436175, 436182, 73 6152, 210656, G01N 3320, G01N 3002
Patent
active
052428346
ABSTRACT:
An analytical method for determining aluminum in amino acids such as glycine. A complex of aluminum and dihydroxyazobenzene is formed by reacting the amino acid solution with a mixture of dihydroxyazobenzene and acetonitrile in the presence of a buffer to obtain a pH of between about 7 and 8. The resulting complex is analyzed for aluminum by high performance liquid chromatography. Minimization of aluminum contamination is achieved by reducing the number of reagents used in the procedure.
REFERENCES:
patent: 4326940 (1982-04-01), Eckles et al.
patent: 4364263 (1982-12-01), Sankoorikal et al.
patent: 4737465 (1988-04-01), Bond et al.
patent: 4871525 (1989-10-01), Giovanniello et al.
patent: 4943637 (1990-07-01), Seino et al.
Hoshino et al, "Highly Selective Determination of Trace Metal Ions with 2,2'-DHAB by Ion-Pair Reversed-Phase Partition HPLC-Spectrophotometric Detection System", Chemistry Letters, pp. 1445-1448, 1984.
Karger et al., Reversed-Phase High-Performance Liquid Chromatography Using Metal Chelate Additives, J. Chromatography, v. 167, pp. 253-272, 1968.
Kaneko et al., Ion-Pair Adsorption Film Colorimetry--A New Simple Method for ppb Level of Aluminum Ion in Water Sample, Mikrochimica Acta 1988 vol. 3 pp. 333-340.
Kaneko et al., HPLC-Spectrophotometric Detection Systems for Trace Metal Ions-Fundamentals and Applications, Biomed. Res. Trace. Elem. vol. 1, No. 2, pp. 231-232, 1990.
"Analytical Applications of Gas Chromatography", Allen Ainsworth Duswalt, Jr., 1959, p. 74.
ANALYST, Hoshino et al. Feb. 1990, vol. 115, pp. 133-137.
"On Column Selective Destruction and Separation Mode High-Performance Liquid Chromatography for Ultra-Trace Amounts of Metal Ions", Rep. Asahi Glass Found., Ind. Technoll. 53, 1988, pp. 327-334.
Anal. Chem. 1991 63, 2219-2222.
Hampshire Chemical Corp.
Housel James C.
Ludlow Jan M.
LandOfFree
Analysis of aluminum in amino acids by high performance liquid c does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Analysis of aluminum in amino acids by high performance liquid c, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Analysis of aluminum in amino acids by high performance liquid c will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-487303