...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Atmospheric environment >Sulphur isotopes as tracers of the influence of a coal-fired power plant on a Scots pine forest in Catalonia (NE Spain)
【24h】

Sulphur isotopes as tracers of the influence of a coal-fired power plant on a Scots pine forest in Catalonia (NE Spain)

机译：硫同位素作为火电厂对加泰罗尼亚（西班牙东北部）的苏格兰松树林的影响的示踪剂

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

Stable sulphur isotopes and major ionic composition were analysed in precipitation and throughfall samples from a Scots pine (Pinus sylvestris, L.) forest near the Cercs coal-fired power plant (Catalonia, NE Spain). The purpose of the study was to determine the main sources of sulphur deposition on this pine forest. Sulphur isotope measurements from the SO_2 power plant stack emissions were used to identify the isotopic signature of this source. Net throughfall fluxes of sulphur (26.1 kg Sha~1 yr~(-1)) and nitrogen (16.3kg N ha~(-1) yr~(-1)) were higher-5-25 times higher for S and 5-15 times for N-at this site than in other forests in Catalonia. Sulphur isotope analysis confirmed that the net throughfall fluxes of sulphur were mostly due to the dry deposition of the SO_2 power plant emissions onto the pine canopies. Two potential atmospheric end-members were distinguished: regional background rainwater δ~(34)S = +7.2‰) and power plant emissions (δ~(34)S = -2.8‰). By applying a two-component sulphur isotope mixing model, we found that during periods of low power plant activity (≤ 10 emission hday~(-1)), 62% of the throughfall sulphate could be attributed to the power plant emissions. At higher activity periods (≥ 14 emission h day~(-1)), this contribution rose to 73%. Although power plant contribution to bulk deposition was lower in both cases (34% and 45%), the possible influence of sulphate coming with long-range transport events from the polluted areas in the Mediterranean basin (δ~(34)S≈0‰) was not discarded.
机译：在塞尔茨燃煤电厂（西班牙加泰罗尼亚，西班牙）附近的苏格兰松树（Pinus sylvestris，L。）森林的降水和穿透样品中分析了稳定的硫同位素和主要离子组成。该研究的目的是确定该松林中硫沉积的主要来源。从SO_2发电厂烟囱中排放的硫同位素进行了测量，以确定该源的同位素特征。硫和氮的净穿透通量通量分别为硫（26.1 kg Sha〜1 yr〜（-1））和氮（16.3kg N ha〜（-1）yr〜（-1））高5-25倍。该地点的氮含量是加泰罗尼亚其他森林的15倍。硫同位素分析证实，硫的净穿透通量主要归因于SO_2发电厂排放物干沉降到松树冠层上。区分了两个潜在的大气末端成员：区域背景雨水δ〜（34）S = + 7.2‰）和电厂排放物（δ〜（34）S = -2.8‰）。通过应用两组分硫同位素混合模型，我们发现在电厂活动量较低（≤10排放小时数（-1））期间，62％的穿透硫酸盐可归因于电厂排放。在较高的活动时间段（≥14个排放h day〜（-1）），这一贡献增加到73％。尽管两种情况下发电厂对大量沉积的贡献均较低（分别为34％和45％），但硫酸盐的影响可能是来自地中海盆地污染地区的长期运输事件（δ〜（34）S≈0‰ ）未被丢弃。

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