Low-level Kjeldahl nitrogen determination on the technicon

Low-level Kjeldahl nitrogen determination on the technicon autoanalyzer. Phil A. Kammerer, Max G. Rodel, Robert A. Hughes, and George Fred. Lee. Envir...
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Table 11. Se/S Weight Ratios in Geochemical Materialss Material Se/S X lo4 3 Meteorites 2 Igneous rocks 1 Magmatic sulfides Argillaceous sediments 3 1 to40 Oxidates Limestones 0.7 0.1 Sedimentary iron ores 0.001 Sea water