%0 Journal Article
%T Effects of Different NH3-N Concentrations on the Nitrification Process in Waters and Sediment from Zhushan Bay,Taihu Lake<br>NH3-N浓度对太湖竺山湾水体及沉积物中硝化作用的影响
%A chen guo yuan
%A <br>陈国元
%J 水生态学杂志
%D 2012
%I 
%X Through the in-door simulation experiment,two processes of nitrification,namely ammonia oxidation and nitrite oxidation in water and sediment from Zhushan Bay of Taihu Lake were studied under different unionized ammonia(NH3-N) concentrations.The results showed that,in the range of ammonia concentrations designed in the experiment,ammonia oxidation rates in water and sediment increased significantly with the increasing of NH3-N concentrations(LSD test,P<0.05).However,the occurrence of nitrite oxidation process had different stages.In water,nitrite oxidation rates started to decrease significantly(LSD test,P<0.05) when NH3-N concentrations were more than 0.35 mg/L.The ratio between ammonia oxidation rates to nitrite oxidation rates increase significantly when NH3-N concentrations were more than 0.15 mg/L,indicating that nitrite oxidation rate has been partly inhibited when NH3-N concentration was 0.15 mg/L.NH3-N concentration in the water of Zhushan Bay,Taihu Lake was 0.19 mg/L which has achieved the range of inhibition to nitrite oxidation.In sediment,nitrite oxidation rates started to decrease(LSD test,P>0.05) when NH3-N concentrations were more than 0.65 mg/L.The ratios between ammonia oxidation rates to nitrite oxidation rates increased significantly when NH3-N concentrations were more than 0.35 mg/L,indicating that nitrite oxidation rate has been partly inhibited when NH3-N concentration was 0.35 mg/L.NH3-N concentration in the interstitial water of Zhushan Bay,Taihu Lake was 0.16 mg/L which has not resulted in significant inhibition to nitrite oxidation.
%K unionized ammonia
%K Taihu Lake
%K waters
%K sediment
%K nitrification process<br>非离子态氨
%K 太湖
%K 水体
%K 沉积物
%K 硝化作用
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=03F54A49DE00578AA0E5DDF5BC021AA7&cid=A129AB11A5573C59&jid=AD42C12863085B5F664F8056EF6D57C2&aid=B7F12897AF64E417D81B154DB371A71D&yid=99E9153A83D4CB11&vid=27746BCEEE58E9DC&iid=0B39A22176CE99FB&sid=E514EE58E0E50ECF&eid=BFE7933E5EEA150D&journal_id=1674-3075&journal_name=水生态学杂志&referenced_num=0&reference_num=0