1)Soil Cr-contamination土壤铬污染
英文短句/例句
1.Cr distribution and speciation in soil at Xinchengzi chromic residue piled site of Shenyang,Liaoning province沈阳市新城子铬渣堆存区土壤铬污染分布及形态研究
2.Study on Pollution Distribution Characteristics of Chromic Waste Coverage Area in Shenyang Xinchengzi沈阳市新城子铬渣堆存区土壤铬污染分布及形态分析
3.Characteristics of Chromium Pollution at Chromium-Containing Slag Site and Chromium (VI) Bioremediation in the Contaminated Soil铬渣堆场铬污染特征及其铬污染土壤微生物修复研究
4.Improvement in electrokinetic remediation of chromium contaminated soil with polarity exchange technique交换电极法强化电动修复铬污染土壤
5.Study of Antidotal Action on Anaerobic Residues for Polluted Soil by Chromium;厌氧发酵残余物对铬污染土壤的解毒效果研究
6.2D Cross Electric Field for Electrokinetic Remediation of Chromium Contaminated Soil二维叠加电场电动修复铬污染土壤的研究
7.Research of Aerobic Co-composting of Low Concentration Chromium-Contaminated Soil and Food Wastes低浓度铬污染土壤与餐厨垃圾混合堆肥研究
8.Study on Amarantus viridis L.phytoremediation in the soil of leather industry polluted by chromic heavy metal野苋菜植物修复皮革工业铬污染土壤的研究
9.Enhanced Extraction of Chitosan for Chromium (Ⅵ) from Contaminated Soil壳聚糖对污染土壤中吸附态铬的解吸作用
10.Influence of Complexes on Electrokinetic Remediation in Chromium Contaminated Soil络合剂对铬污染土壤电动修复作用的影响
11.RFLP Analysis of Bacterial Communities of Remedied Chromium Contaminated Soil by Different Methods;铬污染土壤修复过程中土壤细菌群落多样性RFLP分析
12.The State of Chromium(Ⅵ)in Polluted Soils and Effect on Soil Urease Activities六价铬污染土壤后形态变化及其对土壤脲酶活性的影响
13.RFLP analysis bacterial communities of remedied chromium-contaminated soil by different methods铬污染土壤修复过程中土壤细菌群落多样性的RFLP分析
14.The Pollution Characteristic Reaserch on Soil Heavy Metal Cd、Cu、Cr、Pb、Zn in the Steel Industry of PanZhiHua;攀枝花市攀钢工业区土壤重金属镉、铜、铬、铅、锌污染特征研究
15.Distribution Characters and Bioactivity of Lead,Cadmium,Chromium and Arsenic in Farmland Soils Near Pollution Sources污染源附近农田土壤中铅镉铬砷的分布特征和生物有效性研究
16.biological purification of soil pollution土壤污染的生物净化
17.transport (of a pollutant) in soil污染物在土壤中的迁移
18.soil pollution and residue in plant土壤污染和植物残毒
相关短句/例句
chromium-contaminated soil铬污染土壤
1.Conducts aerobic co-composting of low concentration chromium-contaminated soil and food wastes, and studies the mutual influence on chromium-contaminated soil and food wastes, the works are as follows:(1) Studies the influence of mass ratio of food wastes and chromium-contaminated soil on the compost process parameter, such as pH, organic matter, C/N etc.本文通过低浓度铬污染土壤与餐厨垃圾混合堆肥,研究堆肥过程中二者之间的相互影响,主要工作如下:(1)研究餐厨垃圾与铬污染土壤堆肥的配比对及堆肥过程中pH、有机质、碳氮比等参数的变化的影响以及堆肥过程中铬形态、浸出毒性的变化,从而确定餐厨垃圾与铬污染土壤堆肥的最佳配比。
3)Cr(Ⅵ)-contaminated soil铬(Ⅵ)污染土壤
4)Soil pollution土壤污染
1.Foreign soil pollution control legal system for China's Inspiration;国外土壤污染防治法律制度对我国的启示
2.Study on soil pollution and countermeasure for pollution control of Dongguang county;东光县局部土壤污染调查及污染防治对策
3.The Present Conditions and Remediation of soil pollution in Hunan;湖南省土壤污染现状与修复
5)contaminated soil污染土壤
1.Effects of factors on Cd bioavailability in soil and the phytoremediation of the Cd-contaminated soil;影响土壤中镉的植物有效性的因素及镉污染土壤的植物修复
2.Technological Development of Contaminated Soil's Proto Shape Biological Reconstruction;污染土壤原位生物修复技术进展
3.Microbiological characteristics of phytoremediation plant root-soil interface for petroleum contaminated soil;石油污染土壤修复植物的根-土界面微生物特征
6)contaminated soils污染土壤
1.Bioremediation of contaminated soils:a review.;污染土壤生物修复技术研究
2.So these contaminated soils need to be amended imminently.治理污染土壤的方法很多,其中菌根修复是近年来发展起来的利用真菌和植物根系形成共生体的一种生物修复方法。
3.In order to evaluate chemical behaviors and bioavailability of heavy metals in contaminated soils,two types of topsoil samples were collected at a Pb-Zn mining area located in Chenzhou city,southern Hunan Province(southern China),where mining activities of heavy metals have been conducted for about 500 years and ore waste tailings have been piled up around.结果表明,2种污染土壤中的重金属Pb、Cd、Zn的形态分布各有差异,均以残渣态为主。
延伸阅读
铬污染 铬是银白色金属，在自然界中主要形成铬铁矿。化合价有+2、+3、+6三种。铬的天然来源主要是岩石风化，由此而来的铬大多是三价铬。 铬主要用于金属加工、电镀、制革等行业。为了防止工业生产过程中循环水对设备的腐蚀，常须加入铬酸盐。工业部门排放的废水和废气，是环境中铬的人为来源。工业废水中的铬主要是六价化合物，如铬酸根离子(CrO厈)。冶金、水泥等工业，以及煤和石油燃烧的废气中，含有颗粒态的铬。 铬在环境中的迁移转化 由于风化作用进入土壤中的铬,容易氧化成可溶性的复合阴离子,然后通过淋洗转移到地面水或地下水中。天然水中一般仅含微量的铬,通过河流输送入海，沉于海底。海水中的铬含量不到1ppb。 水体中的三价铬主要被吸附在固体物质上而存在于沉积物中；六价铬则多溶于水中。六价铬在水体中是稳定的，但在厌氧条件下可还原为三价铬。三价铬的盐类可在中性或弱碱性溶液中水解，生成不溶于水的氢氧化铬而沉入水底。三价铬在天然水中也可被氧化，但速率很低。环境中的三价铬和六价铬可以互相转化，所以近来倾向于根据铬的总含量，而不是根据六价铬的含量来规定水质标准。 危害 铬是人和动物所必需的一种微量元素，躯体缺铬可引起动脉粥样硬化症。铬对植物生长有刺激作用，可提高收获量。但如含铬过多，对人和动植物都是有害的。 三价铬和六价铬对人体健康都有害，被怀疑有致癌作用。一般认为六价铬的毒性强，更易为人体吸收，而且可在体内蓄积（见铬污染对健康的影响）。 三价铬和六价铬对水生生物都有致死作用。铬能在鱼体内蓄积。三价铬对鱼类的毒性比六价铬高。土壤中铬过多时，会抑制有机物质的硝化作用，并使铬在植物体内蓄积。据试验，水中含铬在1ppm时可刺激作物生长，1～10ppm时会使作物生长减缓，到100ppm时则几乎完全使作物停止生长，濒于死亡。废水中含有铬化合物，能降低废水生化处理效率。 环境标准 中国规定生活饮用水中六价铬的浓度应低于0.05毫克／升;地面水中铬的最高容许浓度为0.5毫克／升（三价铬）和0.05毫克／升(六价铬)；工业废水中六价铬及其化合物最高容许排放标准为 0.5毫克／升（按六价铬计）；渔业用水中铬最高容许浓度为 0.5毫克／升（三价铬）和0.05毫克／升（六价铬）。居住区大气中六价铬的最高容许浓度为0.0015毫克/米3（一次测定值）；车间空气中三氧化二铬、铬酸盐、重铬酸盐的最高容许浓度为0.1毫克／米3（换算成三氧化二铬）。
