Analysis of hydrogen and methane in seawater by “Headspace” method: Determination at trace level with an automatic headspace sampler
نویسندگان
چکیده
منابع مشابه
An automated sampler for high temperature headspace gas chromatography
The environmental concern for chemicals covers a broad spectrum. One of the specific concerns in the chemical industry today is the discharge of residual volatile chemicals (normally solvents, monomers, and impurities) from commercial polymeric materials into the atmosphere. The polymer manufacturing worker, the material processing and fabricating workers, and finally the consumer, all must be ...
متن کاملHeadspace Gas Chromatographic Method for the Determination of Hydrogen Peroxide Residues in Bleaching Effluent
A simple, rapid, accurate, and practical headspace gas chromatographic method is proposed for the determination of hydrogen peroxide residues in bleaching effluent. This method is based on the reaction of hydrogen peroxide with ceric sulfate, under acidic conditions, where hydrogen peroxide is converted to oxygen, which is then measured using headspace gas chromatography (HS-GC) coupled with a ...
متن کاملDetermination of benzene in urine by static headspace gas chromatography.
This paper describes the application of static headspace gas chromatography in determining benzene in urine. The method was analytically validated for sensitivity (DL = 42 ng/l), repeatability (RSD = 3% and 4%), and accuracy (71%), and was applied in measuring urine benzene in nonsmokers (N = 14) and smokers (N = 18). All urine samples had measurable benzene concentrations. The method proved se...
متن کاملDetermination of microstickies in recycled whitewater by headspace gas chromatography.
This study proposed a novel headspace gas chromatographic (HS-GC) method for determination of adhesive contaminants (microstickies) in recycled whitewater, a fiber containing process stream, in the paper mill. It is based on the adsorption behavior of toluene (as a tracer) on the hydrophobic surface of microstickies, which affects the apparent vapor-liquid equilibration partitioning of toluene....
متن کاملMultiple Headspace Extraction for the Quantitative Determination of Residual Monomer and Solvents in Polystyrene Pellets Using the Agilent 7697A Headspace Sampler Authors
A multiple headspace extraction (MHE) method using the Agilent 7697A Headspace Sampler coupled with an Agilent 7890A Gas Chromatograph has been developed for quantitative determination of residual monomers and solvents in polystyrene pellets. The polystyrene pellets were freeze-ground before analysis by the MHE procedure. The optimization of headspace temperature and time for sample equilibrati...
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ژورنال
عنوان ژورنال: Talanta
سال: 2017
ISSN: 0039-9140
DOI: 10.1016/j.talanta.2016.10.034