Example: stock market
Determination of particulate
Found 2 free book(s)
SULFUR DIOXIDE 6004
www.cdc.govof 40 to 200 L. Do not exceed a total particulate loading of 2 mg on the front filter. 4. Seal the sampler and pack securely for shipment. NOTE: If determination of sulfuric acid is required, transfer the front (membrane) filter to a clean vial within 4 h to avoid low recovery of sulfate. Handle the filter with tweezers to avoid contamination.
POLYNUCLEAR AROMATIC HYDROCARBONS by GC 5515
www.cdc.govadsorbed by, particulate matter collected on the filter. It is necessary to determine the solvent which maximizes recovery of the PAH from each sample matrix. For example, methylene chloride [3,4] and benzene:ethanol (4:1 v/v) [5] have been recommended for extraction of PAH from diesel exhaust particulate…