Atmospheric deposition of polycyclic aromatic hydrocarbons onto Massachusetts Bay
- Univ. of Massachusetts, Lowell, MA (United States)
- EARTH TECH, Concord, MA (United States); and others
Wet and dry atmospheric deposition of polycyclic aromatic hydrocarbons (PAHs) was measured at biweekly intervals from 15 September 1992 to 16 September 1993 at two sites on Massachusetts Bay, Nahant, near Boston, and Truro, near the tip of Cape Cod. Wet and dry deposition was measured using a conventional wet/dry collector, except that the dry bucket contained a layer of water in order to simulate the uptake of dry deposition onto a water surface. The PAHs were extracted from the aqueous solution/suspension by methylene chloride and analyzed by GC-ECD and GC-MS. Dry and wet depositions of PAHs were significantly greater at Nahant than at Truro, due to the proximity of emission sources in the metropolitan Boston area. Highest deposition of PAHs was observed in the winter season. At Nahant, the total deposition (wet + dry) of PAHs amounted to 970 {mu}g m{sup {minus}2} yr{sup {minus}1}, at Truro 350 {mu}g m{sup {minus}2} yr{sup {minus}1}. Polychlorinated biphenyls (PCBs) were not found above the detection limit of the analytical procedure.
- OSTI ID:
- 617705
- Report Number(s):
- CONF-9610359-; TRN: 98:002113-0012
- Resource Relation:
- Conference: Specialty conference on atmospheric deposition to the great waters, Niagara Falls, NY (United States), 28-30 Oct 1996; Other Information: PBD: 1997; Related Information: Is Part Of Atmospheric deposition to the Great Waters VIP-72; PB: 321 p.
- Country of Publication:
- United States
- Language:
- English
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