A NEW METHOD FOR THE SIMULTANEOUS DETERMINATION OF THE AMOUNT OF N_2O EVOLVED FROM SOIL AND ITS N-15 ABUNDANCE

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概要

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• A new method for the simultaneous determination of the amount of N_2O evolved from soil and its N-15 abundance was developed. Gases evolved from soil were collected in a 1-liter Tedlar&oR; bag using a special gas collecting device. Nitrous oxide (N_2O) in the collected sample gases was concentrated in the glass tube trap with liquid nitrogen. The collected N_2O was released and measured by thermal conductivity detector gas chromatography. By this system, a quantity of 0.1 μg N/liter sample could be determined for N_2O. The N_2O separated by gas chromatography was introduced into a discharge tube and subjected to the N-15 analysis by emission spectrometry. By this system ^<15>N atom % of 0.3 μg N_2O-N/1 liter sample could be measured.

• 社団法人日本土壌肥料学会の論文

著者

• Kumazawa K

  Tokyo Univ. Agriculture Tokyo Jpn

• Kumazawa Kikuo

  Department Of Agricultural Chemistry The University Of Tokyo

• KUMAZAWA Kikuo

  Laboratory of Plant Nutrition and Fertilizers, Department of Agriculture, the University of Tokyo

• Owa N

  Department Of Farm Chemicals National Institute Of Agro-environmental Sciences:(present Address)depa

• MURAKAMI Toshifumi

  Laboratory of Plant Nutrition and Fertilizer, Faculty of Agriculture, The University of Tokyo

• OWA Naoto

  Laboratory of Plant Nutrition and Fertilizer, Faculty of Agriculture, The University of Tokyo

• Murakami T

  Nagano Chushin Agricultural Experiment Station:(present Address)national Agriculture Research Center

• Murakami Toshifumi

  Laboratory Of Plant Nutrition And Fertilizer Faculty Of Agriculture The University Of Tokyo

• Kumazawa Kikuo

  Laboratory Of Plant Nutrition And Fertilizer Faculty Of Agriculture The University Of Tokyo

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