National Institute for Occupational Safety and Health

“ Inject sample aliquot manually using solvent flush technique or with autosampler. NOTE: If peak area is above the linear range of the working standards, dilute with ethanol, reanalyze and apply the appropriate dilution factor in calculations. ”

“ Ethanol, absolute. Nitroglycerin (NG) * - one of the following: a. pure material. b. standard solution in ethanol, available from dynamite manufacturer. c. tablets, sublingual, USP (analyzed; 80 to 112% NG) . NOTE: to prepare solutions, weigh, crush and extract with ethanol. Filter and dilute to volume. d. nitroglycerin lactose trituration, available from NG tablet manufacturer. Ethylene glycol dinitrate (EGDN) * - one of the following: a. pure material. b. dynamite, analyzed, available. NOTE: Dynamite is heterogeneous. Use care to obtain representative sample. ”

“ Ethanol is flammable and all work should be done in an exhaust hood and away from any open flame. Nitroglycerin and ethylene glycol dinitrate can be explosive in their pure forms and extreme caution should be used when handling the bulk material [5] .
SAMPLING: 1. 2. 3. 4.
Calibrate each personal sampling pump with a representative sampler in line. Break the ends of the sampler immediately before sampling. ”