| 海水养殖废水中氨氮测定方法的影响因素及改进研究 |
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| 引用本文： | 石芳永,张延青,徐洋,刘鹰,刘明星.海水养殖废水中氨氮测定方法的影响因素及改进研究[J].渔业现代化,2009,36(2). |
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| 作者姓名： | 石芳永 张延青 徐洋 刘鹰 刘明星 |
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| 作者单位： | 1. 青岛理工大学,青岛,266033
2. 中国科学院海洋研究所,青岛,266071 |
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| 基金项目： | 国家高技术研究发展计划(863计划)，国家自然科学基金，国家科技支撑计划 |
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| 摘 要： | 采用酒石酸钾钠溶液-氢氧化钠溶液作为屏蔽剂排除海水中钙、镁离子对测定的干扰,将纳氏试剂比色法用于对海水养殖废水中氨氮的测定,最佳测定条件为200 g/L的氢氧化钠溶液用量2.5 mL,纳氏试剂1.5 mL,显色时间25 min.该方法对盐度为10～32的海水可以直接测定,氨氮质量浓度在0.01～0.04 mg/L符合比尔定律,检出限为0.01 mg/L,加标回收率在91%～108%.
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| 关 键 词： | 海水养殖 氨氮测定 次溴酸盐氧化法 纳氏试剂比色法 |
Study on the influencing factors and improvement of NH_3-N determination in mariculture water |
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| SHI Fang-yong,ZHANG Yan-qing,XU Yang,LIU Ying,LIU Ming-xing.Study on the influencing factors and improvement of NH_3-N determination in mariculture water[J].Fishery Modernization,2009,36(2). |
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| Authors: | SHI Fang-yong ZHANG Yan-qing XU Yang LIU Ying LIU Ming-xing |
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| Institution: | 1 Qingdao Technological University;Qingdao 2660003;China;2 Institute of Oceanology;Chinese Academy of Sciences;Qingdao 266071;China |
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| Abstract: | Hypobromite Oxidation process can not apply to NH3-N determination in mariculture water,this is mainly because the high NH3-N concentration is out of the range of standard curve.Furthermere,the concentration of organic matters and reducing substances are too high,NH3-N can not achieve complete oxidation due to the lack of oxidant.The tests indicated that,with potassium sodium tartrate and sodium hydroxide solution as shielding agent for eliminating the interference of calcium and magnesium ions,Hypobromite ... |
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| Keywords: | mariculture water NH_3-N determination Hypobromite Oxidation process nessler's reagent colorimetry |
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