Some commercial laboratories use periodic nitrate nitrogen tests as guides. 许多商业性的试验室已应用定期的硝态氮分析作为指导。
The method based on microliter sample dilution was applied to monitoring of ammonium nitrogen in fermentation solutions. 把微升进样在线稀释技术同气体扩散光度法结合,测定了农药发酵液中氨态氮的含量。