黄河(内蒙古段)沉积物中硅的化学形态研究
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- 英文论文题名：Chemical Form of Silicon In Yellow River Sediment(Inner Mongolia)
- 论文作者：杨小红 ; 王凤英 ; 李莹
- 英文论文作者：Yang Xiaohong ; Wang Fengying ; Li Ying ; Department of Chemistry ; JiNing Normal College
- 年：2016
- 作者机构：集宁师范学院化学系;
- 论文关键词：沉积物 ; 硅形态 ; 黄河
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第二十六分会：环境化学
- 语种：中文
- 分类号：X522
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第二十六分会 ; 环境化学
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：148k
- 原文格式：D
- 会议级别：全国
摘要
运用连续浸提技术提取沉积物中不同形态的硅,以硅的化学形态研究为基础,首次系统地开展了黄河内蒙古地区硅循环研究。研究结果表明:在黄河(内蒙古段)沉积物中硅的存在形态主要有种IMOF-Si、OSF-Si、CF-Si、IEF-Si四种,其中IMOF-Si、OSF-Si是硅的主要存在形态,分别占总硅含量的51.06%-69.05%和24.55%-43.69%;CF-Si的含量约占总硅的2.460%-5.556%,IEF-Si含量最少,约占总硅的2.289%-3.177%。IEF-Si、CF-Si含量较少,是由于其对环境的变化反应敏感,易于从沉积物中释放进入到上覆水中参与循环;而IMOF-Si的含量最大,其次是OSF-Si,它们是较稳定的结合态硅,但在环境发生较大的变化时,也可以成为上覆水的硅"源"。影响沉积物中硅的形态含量的因素很多,除了与沉积物自身性质外,还受外界环境控制,如人类活动、工业酸性废水、水动力条件、沉积环境等。不同结合态的硅在沉积物中的含量水平和分布特征对于了解黄河流域,乃至更大范围内硅的地球化学循环有着重要意义,为水环境管理和决策提供有价值的环境信息。
Continuous extraction technique was adopted to extract different forms of silicon.Based on the study of the different chemical forms of silicon in sediment,the Yellow River,Inner Mongolia section's silicon cycle was researched and studied for the first time.The study shows that there are four forms of silicon contained in the Yellow River,Inner Mongolia section.They are IEF-Si,CF-Si,IMOF-Si and OSF-Si.,accounted for 51.06%-69.05% 、24.55%-69.05% 、2.460%-5.556% 、2.289%-3.177% of total silicon content respectively.EF-Si and CF-Si take relatively small portions of the silicon contained.They are very sensitive to environmental changes,and easily to be released to the water body from sediment.This section of Yellow River has IMOF-Si the most.OSF-Si comes the second.These two forms of silicon are very stable.They participate in the silicon cycle under certain conditions.
Continuous extraction technique was adopted to extract different forms of silicon.Based on the study of the different chemical forms of silicon in sediment,the Yellow River,Inner Mongolia section's silicon cycle was researched and studied for the first time.The study shows that there are four forms of silicon contained in the Yellow River,Inner Mongolia section.They are IEF-Si,CF-Si,IMOF-Si and OSF-Si.,accounted for 51.06%-69.05% 、24.55%-69.05% 、2.460%-5.556% 、2.289%-3.177% of total silicon content respectively.EF-Si and CF-Si take relatively small portions of the silicon contained.They are very sensitive to environmental changes,and easily to be released to the water body from sediment.This section of Yellow River has IMOF-Si the most.OSF-Si comes the second.These two forms of silicon are very stable.They participate in the silicon cycle under certain conditions.
引文
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[2]叶曦雯,刘素美,赵颖翡.中国环境科学,2004,24(3):265-269.
[3]Tessier A,Campbell P G C,Bisson M.Analytical Chemistry,1979,151(7):86-88
[4]吕昌伟,崔萌,高际玫.环境科学,2012,33(1):135-140.