1. 毕业设计（论文）的内容和要求

多环芳烃（polycyclic aromatic hydrocarbons, pahs）是一种最早被发现的具有”三致”作用的有机污染物之一，因特殊而稳定的环状结构，使其难以被生物利用，因而在环境中呈不断累积的趋势，严重威胁着生态环境和人体安全，受到广泛的关注。

目前，已在重庆主城区水中检测出了萘、苊烯、苊等9种pahs，总浓度范围为0.051-2.319 micro;g/l，平均浓度为0.725micro;g/l，其中在长江的浓度范围为0.170-2.059 micro;g/l，嘉陵江中浓度范围为0.051-2.319 micro;g/l。

同时研究发现，在中国农业土壤中16种pahs的范围在152.2-1317.7 micro;g/kg，蔬菜内的含量为89.9-489.4 micro;g/k。

2. 参考文献

[1] 何燕. 重庆市主城区水中多环芳烃的污染状况分析及环境行为初步研究[D]. 西南大学, 2008. [2] Chai C, Cheng Q, Wu J, et al. Contamination, source identification, and risk assessment of polycyclic aromatic hydrocarbons in the soils of vegetable greenhouses in Shandong, China[J]. Ecotoxicology Environmental Safety, 2017, 142:181. [3] 张凤. 我国室内环境多环芳烃残留特征源解析及人体暴露评估[D]. 哈尔滨工业大学, 2011. [4] Ribeiro A R, Nunes O C, Pereira M F, et al. An overview on the advanced oxidation processes applied for the treatment of water pollutants defined in the recently launched Directive 2013/39/EU[J]. Environment International, 2015, 75:33-51. [5] Rabaey K, Bioelectrochemical systems: From extracellular electron transfer to biotechnological application [M]. International Water Assn., 2010. [6] Lan J, Sun Y, Xiao S, et al. Polycyclic aromatic hydrocarbon contamination in a highly vulnerable underground river system in Chongqing, Southwest China[J]. Journal of Geochemical Exploration, 2016, 168:65-71. [7] Yakovleva E V, Gabov D N, Beznosikov V A, et al. Accumulation of polycyclic aromatic hydrocarbons in soils and plants of the tundra zone under the impact of coal-mining industry[J]. Eurasian Soil Science, 2016, 49(11):1319-1328. [8] L#252;beck J S, Poulsen K G, Knudsen S B, et al. Source apportionment of polycyclic aromatic hydrocarbons (PAHs) in sediments from Khuzestan province, Iran[J]. Marine Pollution Bulletin, 2016, 110(1):584-590. [9] Kumar A V, Kothiyal N C, Kumari S, et al. Determination of some carcinogenic PAHs with toxic equivalency factor along roadside soil within a fast developing northern city of India[J]. Journal of Earth System Science, 2014, 123(3):479-489. [10] Kronenberg M, Trably E, Bernet N, et al. Biodegradation of polycyclic aromatic hydrocarbons: Using microbial bioelectrochemical systems to overcome an impasse.[J]. Environmental Pollution, 2017, 231(Pt 1):509. [11] Adelaja O, Keshavarz T, Kyazze G. The effect of salinity, redox mediators and temperature on anaerobic biodegradation of petroleum hydrocarbons in microbial fuel cells.[J]. Journal of Hazardous Materials, 2015, 283:211-217. [12] Guo W Q, Guo S, Yin R L, et al. Reduction of 4-chloronitrobenzene in a bioelectrochemical reactor with biocathode at ambient temperature for a long-term operation[J]. Journal of the Taiwan Institute of Chemical Engineers, 2015, 46:119-124. [13] 周亚, 杨春. 生物电化学系统对4-氯硝基苯的降解[J]. 化工进展, 2018, 37(1). [14] Lu L, Huggins T, Jin S, et al. Microbial metabolism and community structure in response to bioelectrochemically enhanced remediation of petroleum hydrocarbon-contaminated soil[J]. Environmental Science Technology, 2014, 48(7):4021-9. [15] Yan Z S, Song N, Cai H Y, et al. Enhanced degradation of phenanthrene and pyrene in freshwater sediments by combined employment of sediment microbial fuel cell and amorphous ferric hydroxide.[J]. Journal of Hazardous Materials, 2012, 199(2):217-225.

3. 毕业设计（论文）进程安排

2018.12.20~2019.1.5 下达课题任务，查阅文献，做好开题前期准备工作； 2019.1.5~2019.1.18 完善课题研究方案，完成外文翻译、文献综述和开题报告工作，组织开题论证和初期检查工作； 2019.1.18~2019.6.3 课题的实验、设计、调研及结果的处理与分析，完成毕业论文和答辩PPT的写作； 2019.6.3~2019.6.14 课题论文答辩 2019.6.14~2019.7.12 完成毕业设计（论文）教学质量的分析、总结和评优工作，做好材料的收集、整理和归档工作。