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The Dumas method in analytical chemistry is a method for the quantitative determination of nitrogen in chemical substances based on a method first described by Jean-Baptiste Dumas in 1826.
Ultrapure water (UPW), high-purity water or highly purified water (HPW) is water that has been purified to uncommonly stringent specifications. Ultrapure water is a term commonly used in manufacturing to emphasize the fact that the water is treated to the highest levels of purity for all contaminant types, including: organic and inorganic compounds; dissolved and particulate matter; volatile and non-volatile; reactive, and inert; hydrophilic and hydrophobic; and dissolved gases.
Elementar is a German multinational manufacturer of elemental analyzers and isotope ratio mass spectrometers for the analysis of non-metallic elements like carbon, nitrogen, sulphur, hydrogen, oxygen or chlorine. The company emerged from Heraeus, a multinational German engineering company that produced analytical instrumentation. Elemental analyzers and isotope ratio mass spectrometers are used in the fields of analytical and environmental chemistry to measure the elemental and isotopic composition of diverse materials like chemicals, pharmaceuticals, fuels, food, water, plants, soil or waste.
The Polyarc reactor is a scientific tool for the measurement of organic molecules. It is paired with a flame ionization detector (FID) in a gas chromatograph (GC) to improve the sensitivity of the FID and give a uniform detector response for all organic molecules (GC-Polyarc/FID).
References
- ↑ Frederic L. Holmes (1963). "Elementary Analysis and the Origins of Physiological Chemistry". Isis. 54 (1): 50–81. doi:10.1086/349664. JSTOR 228728. S2CID 94123953.
- ↑ "CHN Analysis". www.intertek.com. Retrieved 2019-04-22.
- ↑ "CHNS Elemental Analysers" (PDF). April 2008. Retrieved 2019-04-22.
- ↑ "CHNS (O) Analyzer". www.rsic.iitb.ac.in. Archived from the original on 2009-07-09. Retrieved 2019-04-22.
- ↑ Pavia, Donald (2008). Introduction to spectroscopy. Brooks Cole. p. 2. ISBN 978-0495114789.