Mercury enrichment in Brassica napus in response to elevated atmospheric mercury concentrations

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• 作者：Chunhao Dai ; Pufeng Qin ; Zhangwei Wang…
• 关键词：Open top chamber ; Gaseous elemental mercury (GEM) ; Soil Mercury ; Brassica napus
• 刊名：Frontiers of Environmental Science & Engineering
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：11
• 期：1
• 全文大小：
• 刊物主题：Environment, general;
• 出版者：Higher Education Press
• ISSN：2095-221X
• 卷排序：11

文摘

Mercury enrichment in response to elevated atmospheric mercury concentrations in the organs of rape (Brassica napus) was investigated using an open top chamber fumigation experiment and a soil mercury enriched cultivation experiment. Results indicate that the mercury concentration in leaves and stems showed a significant variation under different concentrations of mercury in atmospheric and soil experiments while the concentration of mercury in roots, seeds and seed coats showed no significant variation under different atmospheric mercury concentrations. Using the function relation established by the experiment, results for atmospheric mercury sources in rape field biomass showed that atmospheric sources accounted for at least 81.81%of mercury in rape leaves and 32.29% of mercury in the stems. Therefore, mercury in the aboveground biomass predominantly derives from the absorption of atmospheric mercury.