WP5 Indoor Environments
Room 17A/B, Level 4
2:10 PM - 5:30 PM, Wednesday, 12 November 2003
Chair: Ulrich, Elin ,
Co-chair: Butt, Craig ,
(443) Indoor source strengths of Chlordanes in coupled indoor and outdoor air samples from three US cities relate to home age.
offenebrg, john1, naumova, yelena1, Eisenreich, Steven1, 2, Turpin, Barbara1, 3, weisel, clifford3, Morandi, Maria4, stock, thomas4, Colome , steven5, Winer, Arthur6, 1 Department of Environmental Sciences, Rutgers, The State University of New Jersey, New Brunswick, NJ2 Joint Research Centre, ISPRA, Italy3 , Environmental and Occupational Health Sciences Institute, Piscataway, New Jersey4 School of Public Health, University of Texas, Houston, Texas5 Integrated Environmental Sciences, Irvine, CA6 School of Public Health, UCLA, Los Angeles, CA
ABSTRACT- Concentrations of six Chlordane species (trans-chlordane, cis-chlordane, trans-nonachlor, cis-nonachlor, oxychlordane and MC5) were measured indoors and outdoors at 157 non-smoking residences in three urban areas during June 1999-May 2000. These measurements were performed on a subset of samples collected within the Relationship of Indoor, Outdoor, and Personal Air study (RIOPA). The study collected 48 hour integrated samples from homes in Los Angeles County, CA, Houston, TX, and Elizabeth, NJ. Both particle bound (PM2.5; quartz fiber filter) and vapor phase (PUF adsorbant) Chlordane concentrations were separately measured by GC / EI-MS after solvent extraction. Outdoor (gas + particle) total Chlordane (trans-chlordane + cis-chlordane + trans-nonachlor + cis-nonachlor) concentrations ranged, from 8 to 11000 pg m-3 in Elizabeth, from 36 to 4270 pg m-3 in Los Angeles, and from 62 to 1770 pg m-3 in Houston. The corresponding indoor total Chlordane concentrations ranged, from 260 to 31800 pg m-3 in Elizabeth, from 37 to 111500 pg m-3 in Los Angeles, and 410 to 38900 pg m-3 in Houston. Geometric mean concentrations were higher in indoor air than outdoor air (1300 vs. 170 pg m-3 in NJ; 1980 vs.580 pg m-3 in CA; 4180 vs. 280 pg m-3 in TX), which suggests that there are significant indoor sources of Chlordane species in a subset of homes in each of the three cities. Calculated source strengths relate to home age, with the highest apparent indoor source strengths occurring in homes build during the period of 1944 to 1959. Possible sources of Chlordanes at indoor locations include residues from use as termiticides. Chlordane concentrations, indoor to outdoor concentration ratios, and relationships of source strengths to home age will be presented.
Key words: Chlordanes, Indoor Air