• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国政府科技报告 >Energetic Materials Effects on Essential Soil Processes: Decomposition of Orchard Grass (Dactylis glomerata) Litter in Soil Contaminated with Energetic Materials.
【24h】

Energetic Materials Effects on Essential Soil Processes: Decomposition of Orchard Grass (Dactylis glomerata) Litter in Soil Contaminated with Energetic Materials.

机译：能量物质对土壤过程的影响：含能材料污染土壤中果园草（Dactylis glomerata）凋落物的分解。

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We investigated the effects of individual nitrogen-based energetic materials (EMs) 2,4-dinitrotoluene (2,4-DNT), 2-amino-4,6-dinitrotoluene (2- ADNT), 4-amino-2,6-dinitrotoluene (4-ADNT), nitroglycerin (NG), and 2,4,6,8,10, 12-hexanitrohexaazaisowurtzitane (CL-20) on decomposition, an essential soil process, utilizing Orchard grass (Dactylis glomerata) straw in Sassafras sandy loam (SSL) soil. Three pieces of 5-cm long internodular sections of straw were used to form a straw cluster. Pre-weighed straw clusters were placed in the soil in each 900 mL volume test container containing approximately 200 g of loosely packed EM-amended soil or carrier (acetone) control soil. After 1, 2, 3, 4, 6, and 8 months of exposure, one straw cluster was harvested from a set of randomly selected replicate containers from within each treatment to quantify the decomposition rates. The exposure concentrations of each EM in soil were analytically determined soils using the U.S. Environmental Protection Agency Method 8330A. The results showed that soil contamination with 2,4-DNT or NG can inhibit litter decomposition rates based on the EC50 values of 1122 mg/kg and 860 mg/kg, respectively. Exposure to 2-ADNT, 4-ADNT or CL-20 did not significantly affect litter decomposition in SSL soil at 10000 mg/kg. These ecotoxicological benchmarks can help identify concentrations of contaminant EM in soil that present an acceptable ecological risk for biologically-mediated processes in soil.

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