...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Environmental Science and Health. A, Toxic/Hazardous Substances & Environmental Engineering >Application of Intake Fraction to Population Exposure Estimates in Hunan Province of China
【24h】

Application of Intake Fraction to Population Exposure Estimates in Hunan Province of China

机译：摄入分数在湖南省人口暴露估计中的应用

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This article developed a new method, based on the concept of "intake fraction", to assess population exposure to primary and secondary fine particle matters from site-specific sources. This method was illustrated by a set of 17 power plants (totally 24 stacks) in Hunan Province of China. The CALPUFF long-range atmospheric dispersion model was used to simulate ambient concentrations of fine particles, and the GIS technology was used to generate a population distribution database from county-level population statistical data. An integrated computer program package was developed to carry out numerical integration of dispersion results over the population data, and produce intake fractions. The resulting average intake fractions within 500km were 9.73 x 10~(-6), 2.39 x 10~(-6), and 2.47 x 10~(-6) for primary fine particles, sulfate and nitrate respectively. Regression analyses were performed to explore the relationships between intake fractions and potential variables. Results showed that the stack height and aggregate populations could be vised to predict intake fractions of fine particles. R~2 of the regression equations were 0.83, 0.64, and 0.74 for primary fine particles, sulfate and nitrate respectively. Iso-intake fractions presenting geographical distributions of intake fractions in Hunan Province were mapped, showing a factor of about 2 between the highest values in the northeast and the lowest in the southwest of Hunan Province.
机译：本文基于“摄入分数”的概念开发了一种新方法，用于评估特定地点来源人群对初级和次级细颗粒物质的接触。中国湖南省的17个发电厂（总共24个烟囱）展示了这种方法。 CALPUFF远程大气扩散模型用于模拟环境中的细颗粒浓度，而GIS技术则用于从县级人口统计数据生成人口分布数据库。开发了集成的计算机程序包，以对总体数据进行离散结果的数值积分，并产生摄入分数。初级细颗粒，硫酸盐和硝酸盐在500公里范围内的平均进气分数分别为9.73 x 10〜（-6），2.39 x 10〜（-6）和2.47 x 10〜（-6）。进行回归分析以探索摄入分数和潜在变量之间的关系。结果表明，可以观察烟囱的高度和聚集体的数量，以预测细颗粒的摄入分数。初级微粒，硫酸盐和硝酸盐的回归方程的R〜2分别为0.83、0.64和0.74。绘制了呈现湖南省摄入分数地理分布的等值进气分数，显示出湖南省东北最高值和西南最低值之间的约2倍因子。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号