| Title: | Wastewater treatment plants and landfills emit volatile methyl siloxanes (VMSs) to the atmosphere: investigations using a new passive air sampler |
| Author(s): | Cheng Y; Shoeib M; Ahrens L; Harner T; Ma J; |
| Address: | "Air Quality Research Division, Science and Technology Branch, Environment Canada, 4905 Dufferin Street, Toronto, Ontario M3H 5T4, Canada" |
| DOI: | 10.1016/j.envpol.2011.07.002 |
| ISSN/ISBN: | 1873-6424 (Electronic) 0269-7491 (Linking) |
| Abstract: | "Volatile methyl siloxanes (VMSs) are a class of chemicals with an increasing range of applications and widespread distribution in the environment. Passive air samplers (PAS) comprising sorbent-impregnated polyurethane-foam (SIP) disks were first calibrated and then deployed around two wastewater treatment plants (WWTPs) and at two landfill sites to investigate inputs of VMSs to air. SIP-derived air concentrations for SigmaVMSs (ng/m(3)) at background sites on the perimeter of the WWTP were 479 +/- 82.3 and comparable to results for the upwind samples at the landfills (333 +/- 194). Order of magnitude higher concentrations of SigmaVMSs (ng/m(3)) were found for on-site samples at the WWTPs (3980 +/- 2620) and landfills (4670 +/- 3360). Yearly emissions (kg/yr) to air were estimated and ranged from 60-2100 and 80-250, respectively, for the cyclic VMSs. These findings demonstrate and quantify for the first time, waste sector emissions of VMSs to the atmosphere" |
| Keywords: | Air Pollutants/*analysis Air Pollution Atmosphere/*chemistry Environmental Monitoring/instrumentation/*methods *Refuse Disposal Siloxanes/*analysis Volatile Organic Compounds/*analysis; |
| Notes: | "MedlineCheng, Yu Shoeib, Mahiba Ahrens, Lutz Harner, Tom Ma, Jianmin eng Research Support, Non-U.S. Gov't England 2011/07/26 Environ Pollut. 2011 Oct; 159(10):2380-6. doi: 10.1016/j.envpol.2011.07.002. Epub 2011 Jul 23" |
