"Concentration standard deviation of soluble cobalt {soluble_Co CAS 7440-48-4} per unit volume of the atmosphere [aerosol phase] by filtration, leaching with pH 4.7 ammonium acetate buffer"@en .
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"SDN:P01::AEC101SD" .
"The square root of the average of the squares of deviations about the mean of a set of values of the specified measurement."@en .
.