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英语翻译The roadside soils were often classified as polluted soi

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英语翻译
The roadside soils were often classified as polluted soils regard-ing their high content of lead,zinc and copper [1].Due to the potential mobilization of metals to other reservoirs,contaminated roadside soils may constitute a health hazard.The environmen-tal mobility and transport of metals are dependent upon the form in which the metal is associated with the soil components[1,2].The understanding of the mechanisms responsible for the binding of metal contaminants in soils is important in order to correctly assess the risk for groundwater contamination.These
mechanisms can be affected by several factors including texture and mineralogical composition of soil and the solution chemistry of soil aqueous phase (i.e.,pH,ionic strength,organic and inor-ganic ligands).The most important soil surface functional groups include the clay minerals,quartz,iron oxyhydroxides and organic matter[3].Heavy metals,such as lead and zinc form surface com-plexes on layer silicates and oxide minerals in soil through inner and outer-sphere complexes on silanol,aluminol,iron and man-ganese hydroxides[4,5].Clay minerals and organic matter bind metals both through ion exchange and surface complexation[7,8].
Finally,various precipitation and coprecipitation reactions may occur,mostly at large equilibriummetal concentrations and at high pH[6–9].Surface complexation model (SCM) is a successful tool for describing the acid–base properties and adsorption behavior of inorganic cations and anions on a variety of single-phase sorbents relevant to soils.Surface complexation models have found wide application in the prediction of ion behavior at the solid–liquid interface,but they have been usually restricted to pure (hydr)oxide sorbents[3,10].The use of geochemical models can simulate the solution concentrations of metals in heterogeneous matrices,such
as natural soils,but it can be complicated by the presence of different sorbents or reactive surfaces that may bind metals[3].Due to the complex and polyfunctional character of soils,the application of SCM to simulate the environmental transport of metals becomes challenged.Indeed,relatively little has been pub-lished on the application of geochemical models for the study of metals mobility in anthropogenic-modified soils,such as road-side soils,where the types and quantity of reactive surfaces are unknown
英语翻译The roadside soils were often classified as polluted soi
这个是我自己翻译的,没用google翻译哦,逐句翻译的,希望能帮到你~~
翻译:
因为路边的土壤铅、锌和铜含量较高,经常被归类为污染土壤.由于这些金属有可能会(随着土地的移动)转移到其他的储水池里,所以路边土壤可能构成健康危害.金属随着环境流动而被运输,是取决于它是以什么形式和土壤的组成联系在一起的.为正确评估地下水被污染的风险,了解土壤中的金属污染物的结合机制是很重要的.这些作用机制会被几个因素影响,包括土壤的质地和矿物组成,和土壤水溶液的化学性质(即酸度,离子强度,有机和无机配体).
最重要的土壤表面的功能组有粘土矿物,石英,铁的氢氧化物和有机物.重金属,像铅和锌,通过与硅醇、铝、铁和镁的氢氧化物的内外层中的复合物反应,在土壤中的层硅酸盐和氧化物矿物的表面形成了复合物.粘土矿物和有机物都是通过离子交换和表面络合反应与金属结合的.最后,各种各样的沉淀和共沉淀反应可能会发生,主要是在高的金属平衡浓度和高pH值(6-9)的条件下发生.
表面络合模型(SCM)是一个成功的,用来描述(与土壤相关的)各种单相吸附剂里的阴阳离子的酸碱性质和吸附功能的工具.表面络合模型已经在固体–液体界面离子行为的预测中广泛地应用,但是这个模型通常只限用于纯(氢)氧化物吸附剂.地球化学模型可以用来模拟不同基质中的金属的浓度,像自然土壤(里的金属浓度).但是,这个模型会变得很复杂,因为(土壤中的)不同的吸附剂或活性表面可能会与金属结合.由于土壤的复杂性和多功能性,用SCM来模拟环境中金属的运输是很有挑战性的.确实,相对来说,关于这个用地球化学模型在人为修建的土壤中来模拟金属的移动的研究,没有多少成果被发表,比如路边的土壤,活性表面的类型和数量是未知的(所以难以用模型模拟预测).