HG/T 5803\uff5e5806-2021
UNE 81596:1994
AIR QUALITY. WORKPLACE ATMOSPHERES. DETERMINATION OF ESTERS I (METHYL ACETATE; ETHYL ACETATE; METHYL-PROPHYL 2 ACETATE; N-BUTHYL ACETATE) IN AIR. CHARCOAL TUBE/SOLVENT DESORPTION/GAS CHROMATOGRAPHIC METHOD.