CH3I_SD_gas_chromatography
SDN:P01::CHSDGCTX
accepted
Concentration standard deviation of iodomethane {methyl iodide CH3I CAS 74-88-4} per unit volume of the water body [dissolved plus reactive particulate <GF/F phase] by purging, cryogenic trapping and gas chromatography
The square root of the average of the squares of deviations about the mean of a set of values of the specified measurement.