基于^15N稳定同位素技术的斜生栅藻对硝氮和氨氮吸收研究 |
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引用本文: | 包苑榆,钟萍,韦桂峰,郭海森,刘正文. 基于^15N稳定同位素技术的斜生栅藻对硝氮和氨氮吸收研究[J]. 水利渔业, 2011, 32(3) |
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作者姓名: | 包苑榆 钟萍 韦桂峰 郭海森 刘正文 |
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作者单位: | 暨南大学水生生物研究中心,广东广州,510632 |
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摘 要: | 硝氮(NO3--N)和氨氮(NH4+-N)是水体中无机氮的主要形态。利用15N稳定同位素技术研究了斜生栅藻(Scendesmus obliquus)对NO3--N和NH4+-N的吸收特征。结果显示,在相同浓度条件下,斜生栅藻对NH4+-N的吸收速率显著高于对NO3--N的吸收率,在180min的试验中,对15NH4+-N的吸收速率为0.62~1.15μmol/(g·min);对15NO3--N的吸收速率为0.08~0.15μmol/(g·min)。在NO3--N和NH4+-N2种形态氮源同时存在的混合组中
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关 键 词: | ^15N稳定同位素 斜生栅藻 硝氮 氨氮 |
Study on Uptake of Nitrate and Ammonium by Scendesmus obliquus Based on ^15N Stable Isotope Technique |
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Abstract: | Nitrate (NO-3-N) and ammonium (NH+4-N) nitrogen are the main forms of inorganic nitrogen in waters.This paper studied the uptake characteristics of NO-3-N and NH+4-N by Scendesmus obliquus based on 15N stable isotope technique. The result showed that the |
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Keywords: | ^15N stable isotope Scendesmus obliquus nitrate ammonium |
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