摘要
土壤样品用H2SO4-H2O2消解后，分别用土壤肥力测定仪和TOC-VCPN测定仪测定全氮，将测定结果与半微量开氏法进行对照，通过样品测试数据的比较，证明所测全氮结果基本一致。应用土壤肥力测定仪测定硫酸铵，回收率达99．0％～99．6％，而且用土壤肥力测定仪和TOC-VCPN测定仪批量分析，操作简便，数据可靠。
The determination of total nitrogen in soil has been compared with the methods of fertility apparatus,TOC-VCPN and Kjeldathl method. The soil sample was digested with H2SO4 and H2O2, and the sample solution was determined for total nitrogen by two methods （fertility apparatus and TOC-VCPN ）. The results obtained by the above two methods are close to that obtained with Kjeldathl. The recovery of 99.0%-99.6% was obtained for ammonium sulfate spiked to the samples in the determination with fertility apparatus. The batch analysis of soil samples by the method of fertility apparatus was easy to operate.
出处
《广州环境科学》
2006年第3期28-29,共2页
Guangzhou Environmental Science
关键词
土壤
全氮
测定
soil total nitrogen determination
