A modified HF-Kjeldahl method for determining total nitrogen in soil

Pedosphere

Volumn 7, Issue 4, 1997, Pages 375-378

  Biyun, Chen ^a   Lili, Cheng ^a   Qixiao, Wen ^a  

^a INSTITUTE OF GEOLOGY AND GEOPHYSICS   (China)

Author keywords

Fixed ammonium; Kjeldahl hf method; Total nitrogen

Indexed keywords

EID: 33746678629     PISSN: 10020160     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (7)

1. Erd, R. C., White, D. E., Fahey, J. J. and Lee, D. E. 1964. Buddingtonite, an ammonium feldspar with zeolitic water. Am. Mineral. 49: 831-850.
2. Keeney, D. R. and Bremner, J. M. 1967. Use of the Coleman Model 29A Analyzer for total nitrogen analysis of soils. Soil Sci. 104: 358-363.
3. Luo, T. Y. and Gao, Z. M. 1994. Mineralogical study of fixed ammonia. Acta Mineralogica Sinica (in Chinese). 14: 404-407.
4. Schulten, H. R., Leinweber, P. and Theng, B. K. G. 1996. Characterization of organic matter in an interlayer clay-organic complex from soil by pyrolysis methylation-mass spectrometry. Geoderma. 69: 105-118.
5. Stewart, B. A. and Porter, L. K. 1963. Inability of the Kjeldahl method to fully measure indigenous fixed ammonium in some soils. Soil Sci. Soc. Am. Proc. 27: 41-43.
6. Wen, Q. X. and Cheng, L. L. 1992. The fixation and defixation of ammonium in soils. In Zhu, Z. L. and Wen, Q. X. (eds.) The Nitrogen in Soils of China (in Chinese). Jiangsu Science and Technology Publishing House, Nanjing. pp. 60-75.
7. Young, J. L. and Aldag, R. W. 1982. Inorganic forms of nitrogen in soil. In Stevenson, F. J. (ed.) Nitrogen in Agricultural Soils. Am. Soc. Agron., Madison, WI. pp. 43-66.