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Chemistry

Analytical chemistry

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Displaying 1901 - 1925 of 2098

Certification of Polycyclic Aromatic Hydrocarbons in a Marine Sediment Reference Material

April 1, 1995

Author(s)

Stephen A. Wise, Michele M. Schantz, Bruce A. Benner Jr, M. J. Hays, Susannah B. Schiller

Considerations in the Design of an Environmental Specimen Bank: Experiences of the National Biomonitoring Specimen Bank Program

April 1, 1995

Author(s)

Stephen A. Wise, B. J. Koster

Relationship of Silver to Selenium and Mercury in the Liver Tissue of Two Species of Toothed Whales (Odontocetes)

April 1, 1995

Author(s)

Paul R. Becker, Elizabeth A. Mackey, R. Demiralp, R. Suydam, G. Early, B. J. Koster, Stephen A. Wise

Certification of Polychlorinated Biphenyl Congeners and Chlorinated Pesticides in a Whale Blubber Standard Reference Material

March 1, 1995

Author(s)

Michele M. Schantz, B. J. Koster, L. M. Oakley, Susannah B. Schiller, Stephen A. Wise

PHYSICAL CHARACTERIZATION OF HEPARIN BY LIGHT-SCATTERING

March 1, 1995

Author(s)

Adolfas K. Gaigalas, Joseph B. Hubbard, R Lesage, Donald H. Atha

PHYSICOCHEMICAL CHARACTERIZATION OF LOW-MOLECULAR-WEIGHT HEPARIN

March 1, 1995

Author(s)

Donald H. Atha, Bruce Coxon, Vytautas Reipa, Adolfas K. Gaigalas

Quantitative Analysis of Selected PCB Congeners in Marine Matrix Reference Materials Using a Novel Cyanobiphenyl Stationary Phase

February 1, 1995

Author(s)

B. R. Hillery, J. E. Girard, Michele M. Schantz, Stephen Wise

Certification of Standard Reference Material (SRM 1941a), Organics in Marine Sediment

January 1, 1995

Author(s)

Michele M. Schantz, Bruce A. Benner Jr, M. J. Hays, William R. Kelly, Robert D. Vocke Jr., R. Demiralp, Robert R. Greenberg, Susannah B. Schiller, G. G. Lauenstein, Stephen A. Wise

Using Capillary Optics for Analytical Nuclear Methods

October 7, 1994

Author(s)

Cynthia J. Zeissler

Alaska Marine Mammal Tissue Archival Project: Specimen Inventory

June 1, 1994

Author(s)

B. J. Koster, Stephen Wise, Paul R. Becker

Comparison of Selectivities for a Series of Cyanobiphenyl Stationary Phases

June 1, 1994

Author(s)

B. R. Hillery, J. E. Girard, Michele M. Schantz, Stephen Wise

Quantitative Analysis of Selected PCB Congeners in Marine Matrix Reference Materials

June 1, 1994

Author(s)

B. R. Hillery, J. E. Girard, Michele M. Schantz, Stephen Wise

Problems and progress in the measurement of reference mass spectra

May 29, 1994

Author(s)

C L. Clifton, Anzor Mikaia, Stephen Stein

Compounds of interest and their availability as well as purity of the samples in the market are discussed. Difficulties in acquiring samples of common chemicals are noted. Sample preparation procedures for GC-MS analysis along with the instrumental

Development of Engineered Stationary Phases for the Separation of Carotenoid Isomers

May 1, 1994

Author(s)

Lane C. Sander, Katherine E. Sharpless, Neal E. Craft, Stephen A. Wise

Shape Selectivity Assessment of Stationary Phases in Gas Chromatography

March 1, 1994

Author(s)

Lane C. Sander, M. Schneider, Stephen A. Wise, C. Woolley

Classification and treatment of errors in reference mass spectra

February 27, 1994

Author(s)

Anzor Mikaia, S G. Lias, Stephen Stein

Requirements to reference spectra and criteria for mass spectrum inclusion, modification and deletion are developed as a result of evaluation of thousands of spectra and analysis of encountered errors. Errors due to a sample, device and operator, data