Short-term toxicity of ammonia, nitrite, and nitrate to the aquatic snail Potamopyrgus antipodarum (Hydrobiidae, Mollusca)
Short-term toxicity of ammonia, nitrite, and nitrate to the aquatic snail Potamopyrgus antipodarum (Hydrobiidae, Mollusca)
复制标题
DOI：
10.1007/s00128-003-0082-5
复制
发表时间：
2003-05-01
影响因子：
2.7
通讯作者：
Camargo, JA
中科院分区：
文献类型：
--
作者：
Alonso, A;Camargo, JA
本文报道了氨、亚硝酸盐和硝酸盐对水生螺的短期毒性。氮化合物，如氨、亚硝酸盐和硝酸盐，作为有机物的生物降解产物自然存在于淡水生态系统中。这些含氮化合物在氮循环中相互依赖。氨通常被好氧化能自养细菌氧化成亚硝酸盐和硝酸盐。目前，人们普遍认为氨对水生动物的毒性大于亚硝酸盐和硝酸盐，但亚硝酸盐和硝酸盐的毒性研究相对较少。
The article reports on short-term toxicity of ammonia, nitrite, and nitrate to the aquatic snail potamopyrgus antipodarum. Nitrogen compounds, such as ammonia, nitrite and nitrate, are present naturally in freshwater ecosystems as biological degradation products of organic matter. These nitrogen compounds are interdependent through the nitrogen cycle. Ammonia is normally oxidized by aerobic chemoautotrophic bacteria in a two-step process firstly to nitrite and subsequently to nitrate. At present, it is accepted that ammonia is more toxic than nitrite and nitrate to aquatic animals though the toxicity of nitrite and nitrate have been comparatively less studied than that of ammonia.