利用¹⁵N稀释技术同时测定沿海沉积物中的硝化作用和硝酸盐还原作用。
Simultaneous determinations of nitrification and nitrate reduction in coastal sediments by a 15N dilution technique.
作者信息
Koike I, Hattori A
出版信息
Appl Environ Microbiol. 1978 May;35(5):853-7. doi: 10.1128/aem.35.5.853-857.1978.
Abstract
Nitrification, the oxidation of ammonia to nitrite and nitrate, and nitrate reduction by bacteria in coastal sediments of Mangoku-Ura and Odawa Bay were simultaneously determined by a 15N dilution technique. In muddy sediments of Mangoku-Ura, nitrate reduction proceeded at a rate of 10(-2) to 10 X 10(-2) microgram-atoms of N/g per h. Nitrification was far less intensive. Denitrification, or N2 production from nitrate, accounted for about 30% of the nitrate reduction. A simultaneous occurrence of nitrification and nitrate reduction with a similar rate of 10(-2) microgram-atoms of N/g per h was demonstrated in sandy sediment collected from a Zostera bed of Odawa Bay.
摘要
采用¹⁵N稀释技术，同时测定了万古浦和小田湾沿海沉积物中细菌将氨氧化为亚硝酸盐和硝酸盐的硝化作用以及硝酸盐还原作用。在万古浦的泥质沉积物中，硝酸盐还原速率为每小时10⁻²至10×10⁻²微克原子氮/克。硝化作用强度要低得多。反硝化作用，即由硝酸盐产生N₂，约占硝酸盐还原量的30%。从小田湾的一个大叶藻床采集的砂质沉积物中，硝化作用和硝酸盐还原作用同时以相似的速率（每小时10⁻²微克原子氮/克）发生。
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本文引用的文献
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