Noble Gas Mass Spectrometry in Earth and Planetary Sciences

Primordial Noble Gas in the Earth

Mass spectrometry in environmental sciences.

A. Organic Analyses 218 1. General Organic Analyses 218 2. Pesticides 219 3. PAHs and PCBs 221 4. Dioxin 222 5. VOCs 223 6. Textile Dyes 223 7. Surfactants 223 8. Disinfection Byproducts 224 9. Taste and Odor Compounds 226 10. Algal and Bacterial Toxins 226 11. Other Organic Pollutants 227 B. Inorganic Analyses 229 1. Disinfection Byproducts 229 2. Perchlorate and Dissolved Gases 230 3. Multipl...

Mass spectrometry across the sciences.

M ass is a fundamental yet easily understood characteristic of a chemical species. For many analytical problems, mass is also highly specific. J. J. Thomson’s 1912 mass spectrum of neon showed isotopes of masses 20 and 22 in a 10:1 ratio, explaining its apparently anomalous atomic weight of 20.2 (1). Mass spectrometry (MS) then became important for such fundamental data of elements and for isot...

Gas Chromatography - Mass Spectrometry

Gas Chromatography-Mass Spectrometry

Gas chromatography (GC) is a widely applied technique in many branches of science and technology. For over half a century, GC has played a fundamental role in determining how many components and in what proportion they exist in a mixture. However, the ability to establish the nature and chemical structure of these separated and quantified compounds is ambiguous and reduced, and requires a spect...