A volumetric inorganic carbon analysis system

被引：81

作者：

Wagner, SW ^{[1
]}

Hanson, JD ^{[1
]}

Olness, A ^{[1
]}

Voorhees, WB ^{[1
]}

机构：

[1] ARS, USDA, N Cent Soil Conservat Res Lab, Morris, MN 56267 USA

来源：

SOIL SCIENCE SOCIETY OF AMERICA JOURNAL | 1998年 / 62卷 / 03期

关键词：

D O I：

10.2136/sssaj1998.03615995006200030021x

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

Measurement of soil organic carbon (OC) is slow and expensive when inorganic carbon (TC) is present. Our objective was to develop an automated volumetric IC analysis system, thus allowing OC to be determined by difference, The system was developed by combining a pressure transducer with a personal computer (PC), data acquisition board, and appropriately developed software. The volumetric system was compared with combustion, neutralization, and sum of Ca + Mg techniques for samples containing up to 60 g kg(-1) IC, Correlations between methods showed linear agreement (r(2) greater than or equal to 0.994). The volumetric system was more precise for relatively low IC amounts (2.0 g kg(-1)) and could process 20 samples h(-1).

引用

页码：690 / 693

页数：4