Shih Shun-I, Lee Wen-Jhy, Lin Long-Full, Huang Jiao-Yan, Su Jen-Wei, Chang-Chien Guo-Ping
Department of Environmental Engineering, Kun Shan University, Yung-Kang, Taiwan.
J Hazard Mater. 2008 May 1;153(1-2):276-84. doi: 10.1016/j.jhazmat.2007.08.048. Epub 2007 Aug 22.
In southern Taiwan, two areas (L- and Y-) with/without biomass open burning were selected to compare the PCDD/F concentrations and their congener profiles in the ambient air. The results of this study indicate that biomass (rice straw) open burning exhibited a significant impact on the PCDD/F concentration level in the ambient air. During the biomass burning season, the total PCDD/F I-TEQ concentrations in the ambient air of L- and Y-areas were approximately 4 and 17 times higher than those without biomass open burning, respectively. When 10% mass fraction of rice straw was burned, the contribution fraction of biomass burning on annual total PCDD/F I-TEQ emission was 3.28 and 8.11% for KC County and for Taiwan, respectively; however, when the calculation was on a weekly basis, the contribution fraction of biomass burning on weekly total PCDD/F I-TEQ emission was 30.6 and 53.4% for KC County and for Taiwan, respectively. The results of this study imply that during the week of biomass burning, it appears to be the most significant source of total I-TEQ PCDD emission. The results of this research can be applied to the study of other agricultural areas.
在台湾南部，选择了两个有/无生物质露天焚烧的区域（L区和Y区），以比较环境空气中多氯二苯并对二恶英/多氯二苯并呋喃（PCDD/F）的浓度及其同系物分布。本研究结果表明，生物质（稻草）露天焚烧对环境空气中PCDD/F的浓度水平有显著影响。在生物质燃烧季节，L区和Y区环境空气中PCDD/F的总毒性当量（I-TEQ）浓度分别比无生物质露天焚烧时高出约4倍和17倍。当燃烧10%质量分数的稻草时，高雄县和台湾地区生物质燃烧对年度PCDD/F总I-TEQ排放的贡献率分别为3.28%和8.11%；然而，按周计算时，高雄县和台湾地区生物质燃烧对每周PCDD/F总I-TEQ排放的贡献率分别为30.6%和53.4%。本研究结果表明，在生物质燃烧的那一周，它似乎是I-TEQ总PCDD排放的最重要来源。本研究结果可应用于其他农业地区的研究。
