网箱养殖对邻近水域的水质影响分析【毕业论文】

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1、本科毕业论文目录本科毕业论文（20届）网箱养殖对邻近水域的水质影响分析专业：环境科学本科毕业论文目录目录摘要IAbstract.II引言11、材料与方法21.1调查站点布设21.2调查时间21.3监测项目及分析方法21.4评价标准31.5评价方法32、实验步骤52.1化学需氧量——碱性高锰酸钾法52.2活性磷酸盐的测定72.3亚硝酸盐——萘乙二胺分光光度法82.4海水中硝酸盐的测定（Zn-Cd法）103、结果与讨论123.1水质各因子数据123.2各因子污染指数评价133.3水体富营养化状况评价133.4重金属分析133.5营养盐分析143.6对策和建议144、总结16参考文献1

2、7致谢18本科毕业论文中文摘要网箱养殖对邻近水域的水质影响分析[摘要]通过对东极养殖海域的网箱养殖区的水质状况的调查分析发现，2009年8月至2010年9月期间，COD变化范围在0.16mg/L~0.51mg/L，属于I类海水水质标准；N（无机氮）变化范围为0.170mg/L~1.072mg/L，属于劣Ⅳ类海水水质标准；PO4-P变化范围在0.0058mg/L~0.0290mg/L，属于II类海水水质标准；Hg变化范围在0.00001mg/L~0.00034mg/L，属于Ⅳ类海水水质标准；Cd变化范围在0.00001mg/L~0.00045mg/L，属于I类海水水质标准；Pb变化

3、范围在0.00043mg/L~0.00570mg/L，属于Ⅲ类海水水质标准；Cu变化范围在0.0014mg/L~0.0047mg/L，属于I类海水水质标准；As变化范围在0.0005mg/L~0.0046mg/L，属于I类海水水质标准；油类变化范围在0.0035mg/L~0.0076mg/L，属于I类海水水质标准。由此可见，东极养殖海域水质总体情况良好，大部分指标都能达到养殖要求，除了Pb、Hg和N不能满足Ⅱ类海水水质标准。[关键词]网箱养殖；东极；水质标准；无机氮；无机磷I本科毕业论文AbstractTheimpactanalysisonwaterqualitynearbyth

4、ecageaquacultures[Abstract]ThroughtheinvestigationofthewaterqualityofthecageaquaculturesinDongji,wefoundthatduring2009Aug.to2010Nov.,thevariationrangeofCODwasfrom0.16mg/Lto0.51mg/L,whichbelongedtotheIclassofthemarinewaterqualitystandards.Thevariationrangeofinorganicnitrogen(N)wasfrom0.170mg/L

5、to1.072mg/L,whichwastheIVclassofthemarinewaterqualitystandards.ThevariationrangeofPO4-Pwas0.0058mg/Lto0.0290mg/L,whichbelongedtotheIIclassofthewater-qualitystandards.ThevariationrangeofHgwasbetween0.00001mg/Lto0.00034mg/L,whichwastheIVclassofthewaterqualitystandards.ThevariationrangeofCdwasbe

6、tween0.00001mg/Lto0.00045mg/L,whichwastheIclassofthewater-qualitystandards.thevariationrangeofPbwasbetween0.00043mg/Lto0.00570mg/L,whichwastheIIIclassofthewater-qualitystandards,ThevariationrangeofCuwasbetween0.0014mg/Lto0.0047mg/L,whichwastheIclassofthewater-qualitystandards.Thevariationrang

7、eofAswasbetween0.0005mg/Lto0.0046mg/L,whichwastheIclassofthewater-qualitystandards.Thevariationrangeofoilswasbetween0.0035mg/Lto0.0076mg/L,whichwastheIclassofthewater-qualitystandards.Thus,wefoundthatthefarmingareawastheoverallqualityofgoodco