Chemical waste disposal sites: sampling and analysis.
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Environmental Monitoring↗
Biomedical subjects
R A Zweidinger
Publications and source records attributed to R A Zweidinger.
Methods for industrial and ambient air. Breath sampling.
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Air Pollutants↗
Determination of benzene, toluene and xylene in breath samples by gas chromatography/mass spectrometry.
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Air Pollutants↗
GC/MS determination of volatile hydrocarbons in breath samples.
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Air Pollutants↗
Sustained drug delivery systems. I. The permeability of poly(epsilon-caprolactone), poly(DL-lactic acid), and their copolymers.
The maximum steady state flux, diffusion coefficients, and solubilities of five contraceptive steroids in homopolymers and copolymers of epsilon-caprolactone and DL-lactic acid were determined. The permeabilities of polymers of epsilon-caprolactone were comparable to silicone rubber and, by inference, are suitable for the construction of drug delivery devices. Poly(DL-lactic acid) was 10(4) times less permeable, although its permeability was significantly enhanced by additives.
Delayed-Action Preparations↗
Sampling and analysis for polychlorinated naphthalenes in the environment.
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Air Pollutants↗
Quantitative GLC determination of codeine in plasma.
A sensitive and accurate GLC method for quantitating codeine in plasma at levels of 50 ng/ml, with limits of detection as low as 5 ng/ml, is described.
Chromatography, Gas↗
Fluorometric quantitation of gallium in biological materials at nanogram levels.
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Animals↗
Photography of bloodstains visualized by luminol.
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Blood Stains↗