{"thcode":61,"term":{"code":494,"name":"chemical analysis","parent":486,"scope":"used for all laboratory analyses in support of geochemical or biochemical research."},"uf":[],"bt":[{"code":486,"name":"laboratory methods","parent":398,"scope":"used for all laboratory procedures in support of scientific investigations."},{"code":398,"name":"research method","parent":1,"scope":null},{"code":1,"name":"Marine Realms Information Bank (MRIB) keyword categories","parent":null,"scope":null}],"nt":[{"code":497,"name":"carbonate analysis","parent":494,"scope":"used for laboratory analyses of inorganic carbon compounds as found in natural waters or organisms."},{"code":500,"name":"gas chromatography","parent":494,"scope":"technique for analyzing volatile organic compounds in a solid or liquid sample."},{"code":495,"name":"mercury analysis","parent":494,"scope":"used for the laboratory analysis of mercury compounds, especially in support of research on mercury cycling in biochemical systems."},{"code":498,"name":"nutrient measurements","parent":494,"scope":"generally used for analyses of nitrogen- or phosphate-bearing compounds as found in natural waters or ecological systems."},{"code":499,"name":"salt analysis","parent":494,"scope":"generally used for laboratory measurements of salinity in natural waters."},{"code":496,"name":"stable isotope analysis","parent":494,"scope":"laboratory analysis to determine the ratio of stable isotopes of an element in a given sample, generally in support of research on geochemical or biochemical fractionation processes."}],"rt":[]}