| 摘要: |
| 采用Michaelis-Menten 动力学方法, 研究了浒苔对NO3-N、NH4-N 和CO(NH2)2 吸收利用关系。结果显示, 浒苔对三种不同氮源的K2s(表观米氏常数)大小顺序为: NO3-N>NH4-N>CO(NH2)2, 表明浒苔对有机氮的亲和力大于对无机氮的亲和力, 且对NH4-N 的亲和力大于其对NO3-N 的亲和力; 浒苔对三种不同氮源的最大吸收速率顺序为: NO3-N>NH4-N>CO(NH2)2, 表明浒苔对氮源的吸收潜力由大到小依次为NO3-N、NH4-N、CO(NH2)2。 |
| 关键词: 氮源 浒苔 吸收动力学 米氏方程 |
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| 基金项目:国家重点基础研究发展计划项目(2010CB428701); 中国海洋大学SRTP 项目(0811010308) |
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| Absorption of different nitrogen species by Enteromorpha prolifera |
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| Abstract: |
| A large scale of Enteromorpha prolifera tide occurred in the coastal area of Qingdao in 2008 utilizations of NO3-N、NH4-N and CO(NH2)2 by Enteromorpha prolifera and the absorption kinetics of Michaelis-Menten were studied in this paper. The apparent Michaelis constant K2s for various nitrogen species followed the order of NO3-N >NH4-N> CO(NH2)2, indicating that Enteromorpha prolifera has affinity to organic nitrogen than to inorganic nitrogen. In addition, Vmax for various nitrogen species followed the order of NO3-N >NH4-N> CO(NH2)2,indicating that the order of Enteromorpha prolifera absorbing potential on different types of nitrogen is NO3-N > NH4-N >CO(NH2)2. |
| Key words: nitrogen source Enteromorpha prolifera absorption kinetics Michealis equation |
