全文总字数：3078字
1. 毕业设计（论文）的内容和要求
铬有不同价态，其中三价铬是人体必需微量元素，参与脂类和糖代谢；六价铬毒性大，且易溶于水，可在地下水中发生远距离迁移。
弄清铬污染场地土壤中有毒六价铬的迁移转化过程对环境风险控制和土壤修复具有重要意义。
目前关于土壤中铬的环境行为的研究大多集中在铬与土壤样品的相互作用，如土壤矿物对铬的吸附，土壤中铬的氧化/还原过程等。
2. 实验内容和要求
1、实验土壤的准备及表征等2、不同溶液动力学及溶液化学条件下的运移3、矿物对运移的影响实验要求：通过实验掌握运移柱的建立方法，运移实验方法等，同时要求熟悉和掌握相应仪器的使用法。
3. 参考文献
1.He X, Chen G, Fang Z, Liang W, Li B, Tang J, Sun Y, Qin L. Source identification of chromium in the sediments of the Xiaoqing River and Laizhou Bay: A chromium stable isotope perspective, Environmental Pollution, 2020, 264: 114686.2.Xu T, Nan F, Jiang X, Tang Y, Zeng Y, Zhang W, Shi B. Effect of soil pH on the transport, fractionation, and oxidation of chromium (III), Ecotoxicology and Environmental Safety 2020, 195: 110459.3.Li B, Liao P, Xie L, Li Q, Pan C, Ning Z, Liu C. Reduced NOM triggered rapid Cr(VI) reduction and formation of NOM-Cr(III) colloids in anoxic environments. Water Research 2020, 181: 115923.4.Wang X, Li L, Yan X, Meng X, Chen Y. Processes of chromium (VI) migration and transformation in chromate production site: A case study from the middle of China Chemosphere, 2020, 257: 127282.5.Qiu Y, Zhang Q, Gao B, Li M, Fan Z, Sang W, Hao H, Wei X. Removal mechanisms of Cr(VI) and Cr(III) by biochar supported nanosized zero-valent iron: Synergy of adsorption, reduction and transformation, Environmental Pollution, 2020, 265, 115018.6.Ghiasia B, Niksokhana M H, Ali Mahdavi Mazdehb Co-transport of chromium(VI) and bentonite colloidal particles in watersaturated porous media: Effect of colloid concentration, sand gradation, and flow velocity, Journal of Contaminant Hydrology, 2020, 234: 103682.7.Sorwat J, Mellage A, Kappler A, Byrne JM, Immobilizing magnetite onto quartz sand for chromium remediation, Journal of Hazardous Materials 2020, 400: 123139.8.Jin R, Liu Y, Liu G, Liu L, Zhou J, Influence of chromate adsorption and reduction on transport and retention of biochar colloids in saturated porous media, Colloids and surfaces A- Physicochenmical and Engineering Aspects, 2020,597: 124791.9.Li J, Fana M, Li M, Liu X. Cr(VI) removal from groundwater using double surfactant-modified nanoscale zero-valent iron (nZVI): Effects of materials in different status, Science of the Total Environment, 2020, 717: 137112.10.Liao P, Pan C, Ding W, Li W, Yuan S, Fortner J, Giammar D, Formation and Transport of Cr(III)-NOM-Fe Colloids upon Reaction of Cr(VI) with NOM-Fe(II) Colloids at Anoxic-Oxic Interfaces, Environmental Science Technology, 2020, 54 : 4256-4266
4. 毕业设计（论文）计划
2019.12.28-2020.2.28 布置课题，根据课题要求开始查阅文献，撰写并提交开题报告，完成文献翻译。
2020.2.29-2020.3.14 整理实验室，熟悉实验室各项操作及规定2020.3.15-2020.3.31 实验材料，试剂等的准备2020.4.1-2020.4.7 预实验2020.4.8-2020.5.25 运移实验2020.5.26-2020.6.3 整理数据, 补充实验，撰写论文2015.6.3- 完成并修改论文准备答辩
以上是毕业论文任务书，课题毕业论文、开题报告、外文翻译、程序设计、图纸设计等资料可联系客服协助查找。
