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请大虾们帮忙翻译下，请不要直接网上翻译，谢谢！不能全部翻译的恶业不要紧，注明翻译的部分就可以，金币照拿！呵呵 视情况追加BB，bb不是问题，只要你能翻译好！ 近年来，随着工农业的发展，越来越多的含有重金属离子的废水排入河流、湖泊等水体，使水体底泥受到重金属污染。重金属是环境中普遍存在的污染物之一，且具有毒性大、不易降解、易通过食物链富集等特点，从而危害人体健康和生态环境。重金属沉积在底泥中，在外界因素干扰下又会释放出来进入水体，造成二次污染。本文以霞湾底泥中重金属锌和铅为研究对象，测定了它们的理化性质、含量及存在形态，研究了底泥中锌和铅释放的动力学特性，并探讨了pH值及有机酸对锌和铅释放的影响，为了解底泥中重金属的释放特性及制定防治措施提供了依据。 本文采用连续提取法分析了重金属的形态，结果表明，在底泥样品中，锌和铅都是主要以铁锰氧化态的形式存在，而可交换离子态的含量均不到1%。锌各形态含量的关系为：铁锰氧化物结合态>残渣态≈碳酸盐结合态>有机硫化态>可交换离子态；铅各形态含量的关系为：铁锰氧化态≈残渣态>有机硫化态>碳酸盐结合态>可交换离子态。 本文采用静态摇瓶实验研究了底泥中重金属锌和铅释放的动力学过程及pH值、有机酸对锌和铅释放的影响。结果表明，指数方程、Elovich方程和二级反应动力学方程均可较好的描述底泥中锌、铅释放的动力学过程，对重金属释放的影响大小为：KCl>KH2PO4≈NaNO3。pH值、有机酸等对底泥中重金属释放的影响结果表明：介质pH值对底泥中锌、铅的释放有重要影响，锌、铅的释放量随pH值的降低而增加，即在酸性条件下，锌、铅更容易向环境释放，但它们因重金属和底泥类型的不同而存在较大的差异；三种低分子有机酸对供试污染底泥中锌、铅都有释放作用，对锌的释放能力大小为：柠檬酸>苹果酸>酒石酸；对铅释放能力大小为：柠檬酸>酒石酸>苹果酸；随着有机酸浓度的升高，底泥中锌、铅的释放量增大，而且释放能力为：锌>铅；同种有机酸对锌、铅的浸出能力为：1号泥<2号泥。 |
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10楼2010-11-27 11:16:02
★ ★ ★
T-MAC3808(金币+2):Google上直接翻译的？辛苦分，能自己认真翻译吗？ 2010-11-14 12:56:24
发芽土豆(金币-3):本版不提倡机器翻译 2010-11-15 08:37:15
T-MAC3808(金币+2):Google上直接翻译的？辛苦分，能自己认真翻译吗？ 2010-11-14 12:56:24
发芽土豆(金币-3):本版不提倡机器翻译 2010-11-15 08:37:15
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近年来，随着工农业的发展，越来越多的含有重金属离子的废水排入河流、湖泊等水体，使水体底泥受到重金属污染。重金属是环境中普遍存在的污染物之一，且具有毒性大、不易降解、易通过食物链富集等特点，从而危害人体健康和生态环境。重金属沉积在底泥中，在外界因素干扰下又会释放出来进入水体，造成二次污染。本文以霞湾底泥中重金属锌和铅为研究对象，测定了它们的理化性质、含量及存在形态，研究了底泥中锌和铅释放的动力学特性，并探讨了pH值及有机酸对锌和铅释放的影响，为了解底泥中重金属的释放特性及制定防治措施提供了依据。 In recent years, with the industrial and agricultural development, more and more of wastewater containing heavy metals into rivers, lakes and other water bodies, such water sediments polluted by heavy metals. Heavy metals are common pollutants of the environment and has toxic and difficult to degrade, and so easy to enrichment through the food chain, thereby endangering human health and the environment. Heavy metal deposition in the sediment, in the interference of external factors will be released into the water body, causing secondary pollution. In this paper, Xia Wan, zinc and lead heavy metals in sediment was studied to determine their physical and chemical properties, content and form there to study the release of sediment zinc and lead in the dynamics, and discusses the pH value and organic acids on Release of zinc and lead, to understand the release of heavy metals in sediment characteristics and provides the basis for developing control measures. |
2楼2010-11-14 12:40:43
T-MAC3808(金币+1):Google上直接翻译的？辛苦分 2010-11-14 12:56:31
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本文采用连续提取法分析了重金属的形态，结果表明，在底泥样品中，锌和铅都是主要以铁锰氧化态的形式存在，而可交换离子态的含量均不到1%。锌各形态含量的关系为：铁锰氧化物结合态>残渣态≈碳酸盐结合态>有机硫化态>可交换离子态；铅各形态含量的关系为：铁锰氧化态≈残渣态>有机硫化态>碳酸盐结合态>可交换离子态。 In this paper, sequential extraction analysis of heavy metals in the form, the results show that the sediment samples, zinc and lead are mainly in the form of iron and manganese oxidation state, and not the content of exchangeable ion state to 1%. Zinc content of the relationship of the form: Fe-Mn oxides> residual ≈ carbonate> organic sulfided> exchangeable ion state; lead content of the relationship of the form: ≈ residual iron and manganese oxidation state> Organic sulfided> carbonates> exchangeable ion state. |
3楼2010-11-14 12:41:38
T-MAC3808(金币+30, 翻译EPI+1):翻译的很好啊，谢谢，能把剩下的翻译下吗？ 2010-11-14 12:54:48
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With the development of industry and agriculture in recent years, increasing wastewaters with heavy metals discharge into water bodies, such as rivers and lakes, resulting in the pollution of water sediments. Heavy metals, as one of the most common pollutants in environment, due to their toxicity, non degradability and food chain enrichment, endanger human health and the environment. Heavy metals deposited in the sediments will be released into the water bodies under the interference of external factors, causing secondary pollution. In this study, zinc and lead heavy metals in Xiawan sediments was determined by their physical and chemical properties, content and form. The dynamics release of zinc and lead in sediments, pH value and organic acids on zinc and lead release were investigated to understand the release characteristic of heavy metals in sediments, which provides a basis for developing control measures. ——第一段译文。 |
4楼2010-11-14 12:41:46
简单回复
2010-11-14 14:20
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