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海水中超低含量活性磷酸盐的Mg(OH)2共沉淀法测定研究

朱赖民 李犇

朱赖民, 李犇. 海水中超低含量活性磷酸盐的Mg(OH)2共沉淀法测定研究[J]. 海洋学报, 2008, 30(3): 148-152.
引用本文: 朱赖民, 李犇. 海水中超低含量活性磷酸盐的Mg(OH)2共沉淀法测定研究[J]. 海洋学报, 2008, 30(3): 148-152.
ZHU Lai-min, LI Ben. Analysis of nanomolar concentrations of phosphate in seawater with liquid waveguide after Mg(OH)2 coprecipitation[J]. Haiyang Xuebao, 2008, 30(3): 148-152.
Citation: ZHU Lai-min, LI Ben. Analysis of nanomolar concentrations of phosphate in seawater with liquid waveguide after Mg(OH)2 coprecipitation[J]. Haiyang Xuebao, 2008, 30(3): 148-152.

海水中超低含量活性磷酸盐的Mg(OH)2共沉淀法测定研究

基金项目: 环境地球化学国家重点实验室项目(SKLEG5001);国家自然科学基金项目(40234041;40060005);国家留学基金项目

Analysis of nanomolar concentrations of phosphate in seawater with liquid waveguide after Mg(OH)2 coprecipitation

  • 摘要: 活性磷(正磷酸盐)是海洋浮游植物生长所必需的物质基础[1-8],磷的生物可利用性直接影响全球的初级生产力水平.磷在特定的海洋环境中还可能限制固氮作用,成为限制海洋初级生产力的重要因素[1,3,6].海水中磷酸盐含量的测定也是海洋污染调查的重要指标之一[4,9].农业和工业废水中磷的过度排放导致河口和近岸海水富营养化,引起浮游植物异常繁殖,造成“赤潮”现象[4].因此,海水中磷的准确测定对深入理解生物地球化学过程及海洋环境保护具有重要理论和实际意义[4-6,9].磷钼蓝分光光度法是海水中活性磷的经典测定方法,检测限为324 nmo1/dm3[5],但在一些寡营养盐海域,例如在南海、地中海
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    PAI S C,YANG C C,RILEY J P.Effects acidity and molybdate concentration on the kinetics of the formation of the phosphoantimonylmolybdenum biue complex[J].Analytica Chimica,1990,229:115-120.
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出版历程
  • 收稿日期:  2007-01-25
  • 修回日期:  2008-05-06

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