华南地质与矿产Issue(3)：306-310,5.DOI:10.3969/j.issn.1007-3701.2015.03.011
高频红外碳硫仪测定土壤/沉积物中总有机碳研究
Determination of total organic carbon in soil and sedi-ment by high frequency infrared carbon sulfur analyzer
摘要
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.关键词
土壤/沉积物/有机碳/高频红外碳硫仪Key words
Soil/sediment/Organic carbon/High frequency infrared carbon sulfur analyzer分类
金属材料引用本文复制引用
顾涛,王迪民,杨梅,杨小丽..高频红外碳硫仪测定土壤/沉积物中总有机碳研究[J].华南地质与矿产,2015,(3):306-310,5.基金项目
中国地质调查局地质矿产调查评价专项项目 （）
