【作者】 毛绪美； 罗泽娇； 李永勇； 刘存富；

【Author】 MAO Xumei LUO Zejiao LI Yongyong LIU Cunfu School of Environmental Studies,China University of Geosciences,Wuhan,Hubei,430074

【机构】 中国地质大学环境学院；

【摘要】 细菌反硝化法是目前地下水中硝酸盐氮同位素分析的最新方法,包括反硝化菌的选取与培养、反硝化菌将硝酸盐完全转化成N₂O 气体、N₂O 气体的提取与纯化、N₂O 气体氮同位素测定。与传统方法相比,细菌反硝化法可分析低浓度微量水中硝酸盐氮同位素,且更为快捷可靠。更多还原

【Abstract】 Bacterial denitrification is a new method for nitrogen isotopic analysis of nitrate in groundwater.Its process includes selec-tion and cultivation of denitrifying bacteria strains,complete conversion of sample nitrate to nitrous oxide by denitrifying bacteria,ex-traction and purification of nitrous oxide,and isotopic analysis of nitrous oxide.Compared with the combustion method,the bacterialdenitrification method can analyze nitrogen isotope of nitrate in trace amounts of water samples with lower concentration,and is hencemore rapid,convenient and reliable.更多还原