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Chemical analysis
Chemical techniques used to identify the composition of substances.
Subtopics:
DNA sequencing (10 items)
Atomic absorption analysis (3 items)
Atomic emission spectroscopy (4 items)
Chromatography (3 items)
Electrophoresis (3 items)
Mass spectroscopy (7 items)
Neutron activation analysis (2 items)
Particle-beam spectroscopy (1 items)
Polymerase chain reaction (4 items)
X-ray diffraction (1 items)

Sediment geochemistry (4 items)
Related topics:


Results 51 - 60 of 60 listed by similarity [list alphabetically]
Parking-lot sealcoat: A major source of PAHs in urban and suburban environments [More info]
Explanation of chemical contaminants released into aquatic environments by popular sealcoating compounds used in parking lots, with frequently-asked questions, links, and contact information.
Pesticide National Synthesis Project: national assessment of pesticides in streams, rivers, and ground water of the United States [More info]
An assessment of pesticides in national water resources, with links to national reports, national statistics, national data, pesticide use, analytical strategy, and standards for the U.S.
PDF Redox Conditions in Selected Principal Aquifers of the United States [More info]
Summarizes measurements of ground-water chemistry that affect the vulnerability of aquifers to contamination. Data are from aquifers throughout the conterminous US and Alaska.
Reston Chlorofluorocarbon Laboratory [More info]
Site on the Chlorofluorocarbon Laboratory and its analytical services for CFCs, sulfur hexafluoride, dissolved gases including nitrogen, argon, methane, carbon dioxide, oxygen, and helium, and tritium/helium-3 dating.
PDF Selenium and stable isotopes of carbon and nitrogen in the benthic clam Corbula amurensis from Northern San Francisco Bay, California: May 1995-February 2010 [More info]
Monthly selenium concentration in this keystone species shows strong spatial and seasonal variation in a five-year series of analyses.
PDF The U.S. Geological Survey's TRIGA reactor [More info]
USGS operates a low-enriched uranium-fueled, pool-type reactor located at the Denver Federal Center. We use it for analyses of fissile and fissionable isotopes, geochemical analysis, and geochronology.
PDF Trace metals related to historical iron smelting at Hopewell Furnace National Historic Site, Berks and Chester Counties, Pennsylvania [More info]
Iron ore containing elevated concentrations of trace metals was smelted here during 113 years of operation (1771-1883). We sampled a variety of materials nearby to determine the amount of metals such as arsenic, chromium, copper, lead, and zinc.
Understanding our planet through chemistry [More info]
Site with a series of articles showing how chemists and geologists use analytical chemistry to determine the age of the Earth, determine Earth's history, predict volcanic eruptions, observe long-term atmospheric change and study pollution.
PDF Understanding processes affecting mineral deposits in humid environments [More info]
Contaminants from mines move more easily from ore materials and mine waste piles to surrounding estuaries and living organisms when water moves through the mine site. Geochemical results shown here will help people mitigate the negative effects.
PDF Using genetic research to inform imperiled and invasive species management [More info]
Describes investigative techniques focused on genetic characteristics of individuals and populations, and explains how this information helps improve existing natural populations and potentially impede invasive populations.
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