...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>MOJ Ecology & Environmental Sciences >Environmental impact assessment of Egyptian Damietta governorate soils contamination with cadmium
【24h】

Environmental impact assessment of Egyptian Damietta governorate soils contamination with cadmium

机译：

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

Soil parental materials and anthropogenic activities are the sources of increasing Cd in soils and enrichment in edible parts of plants and creating hazards to animals and human. Thus, it is an important issue to estimate the levels of Cd in soils; straw and grains of rice and wheat plants grown in the soils contaminate with Cd and evaluates human health risk. In surface soil, total Cd (899卤497碌g kg-1) and Diethylene Triamine Penta Acetate (DTPA) extractable Cd (16.41卤13.83碌g kg-1) slightly higher by 1.02卤0.20 and 1.31卤0.45 folds than the subsurface layers, respectively. The DTPA extractable Cd concentration is significantly increased linearly with increasing total soil Cd (r=0.90). Positive significant correlation was found between soils DTPA extractable Cd and soil organic matter (OM) content (r=0.95), while significant negative correlation for both CaCO3 content (r=-0.92) and pH (r=-0.94). In rice Cd concentrations of straw (374卤156碌g kg-1) and grains (35卤16碌g kg-1) are significantly correlated with total soil Cd (r=0.89, r=0.86) and DTPA extractable Cd (r=0.84, r=0.74), respectively. Whereas, rice grains Cd is increased with increasing straw Cd (r=0.98). Wheat Cd concentrations of straw (194卤71碌g kg-1) and grains (18卤13碌g kg-1) are significantly correlated with total soil Cd (r=0.90, r=0.96) and DTPA extractable Cd (r = 0.91, r=0.95), respectively. Wheat grains Cd is increased with increasing straw Cd (r=0.95). The Cd Transfer factors (TF) as an average is higher in rice grains (0.04卤0.014) than wheat grains (0.021卤0.016). However, Cd concentrations in the wheat and rice grains are lower than the both EU and WHO/FAO permissible limits (0.24mg kg-1 and 0.4mg kg-1 dry wt., respectively) and so far no potential human health risk is concluded yet.

著录项

相似文献

  • 外文文献
  • 中文文献
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