| Citation: |
GU Tao, WANG Di-Ming, YANG Mei, YANG Xiao-Li. Determination of total organic carbon in soil and sedi-ment by high frequency infrared carbon sulfur analyzer[J]. South China Geology, 2015, (3): 306-310. doi: 10.3969/j.issn.1007-3701.2015.03.011
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Determination of total organic carbon in soil and sedi-ment by high frequency infrared carbon sulfur analyzer
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Abstract
A new method for determination of organic carbon in soil and sediment by high frequency infrared car-bon sulfur analyzer are described in this paper. Samples were pretreated by hydrochloric acid to remove the inor-ganic carbon, filter out the acid insolubles and clean it, after being dry, put it into the high frequency infrared car-bon sulfur analyzer for burning in the rich oxygen flow, organic carbon was oxidized to CO2, which has strong characteristics of infrared absorption at 4.26 microns and conforms to the lambert beer's law, we can get the con-tent of the carbon dioxide in the mixed gases by measuring the change of light intensity, then the total organic car-bon content in the sample are obtained. The standard deviation is 3.45%and 3.10%by testing the GBW07423 (GSS-09)and GBW07307a (GSD-07a)for 12 times respectively. The detection limit was 0.004% by testing blank for 12 times and calculating by six sigma.-
Keywords:
- Soil /
- sediment /
- Organic carbon /
- High frequency infrared carbon sulfur analyzer
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GU Tao, WANG Di-Ming, YANG Mei, YANG Xiao-Li. Determination of total organic carbon in soil and sedi-ment by high frequency infrared carbon sulfur analyzer[J]. South China Geology, 2015, (3): 306-310. doi: 10.3969/j.issn.1007-3701.2015.03.011
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