干旱区生态环境知识资源中心(Arid): NON-DESTRUCTIVE SOIL CARBON ANALYZER.

Arid

DOI	10.2172/15007355
报告编号	BNL--72200-2004
来源ID	OSTI_ID: 15007355
	NON-DESTRUCTIVE SOIL CARBON ANALYZER.
	Wielopolski, Lucian; Hendrey, G.; Orion, I.; Prior, S.; Rogers, H.; Runion, B.; Torbert, A.
英文摘要	This report describes the feasibility, calibration, and safety considerations of a non-destructive, in situ, quantitative, volumetric soil carbon analytical method based on inelastic neutron scattering (INS). The method can quantify values as low as 0.018 gC/cc, or about 1.2% carbon by weight with high precision under the instrument's configuration and operating conditions reported here. INS is safe and easy to use, residual soil activation declines to background values in under an hour, and no radiological requirements are needed for transporting the instrument. The labor required to obtain soil-carbon data is about 10-fold less than with other methods, and the instrument offers a nearly instantaneous rate of output of carbon-content values. Furthermore, it has the potential to quantify other elements, particularly nitrogen. New instrumentation was developed in response to a research solicitation from the U.S. Department of Energy (DOE LAB 00-09 Carbon Sequestration Research Program) supporting the Terrestrial Carbon Processes (TCP) program of the Office of Science, Biological and Environmental Research (BER). The solicitation called for developing and demonstrating novel techniques for quantitatively measuring changes in soil carbon. The report includes raw data and analyses of a set of proof-of-concept, double-blind studies to evaluate the INS approach in the first phase of developing the instrument. Managing soils so that they sequester massive amounts of carbon was suggested as a means to mitigate the atmospheric buildup of anthropogenic CO{sub 2}. Quantifying changes in the soils' carbon stocks will be essential to evaluating such schemes and documenting their performance. Current methods for quantifying carbon in soil by excavation and core sampling are invasive, slow, labor-intensive and locally destroy the system being observed. Newly emerging technologies, such as Laser Induced Breakdown Spectroscopy and Near-Infrared Spectroscopy, offer soil-carbon analysis; however, these also are invasive and destructive techniques. The INS approach permits quantification in a relatively large volume of soil without disrupting the measurement site. The technique is very fast and provides nearly instantaneous results thereby reducing the cost, and speeding up the rate of analysis. It also has the potential to cover large areas in a mobile scanning mode. These capabilities will significantly advance the tracking carbon sequestration and offer a tool for research in agronomy, forestry, soil ecology and biogeochemistry.
出版年	2004
报告类型	Technical Report
语种	英语
国家	美国
来源学科分类	54 ENVIRONMENTAL SCIENCES ; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS ; BIOGEOCHEMISTRY ; CALIBRATION ; CARBON ; CONFIGURATION ; ECOLOGY ; EXCAVATION ; FORESTRY ; LASERS ; NEUTRONS ; NITROGEN ; RESEARCH PROGRAMS ; SAFETY ; SAMPLING ; SCATTERING ; SOILS ; SPECTROSCOPY
URL	http://www.osti.gov/scitech/servlets/purl/15007355
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/268674
推荐引用方式 GB/T 7714	Wielopolski, Lucian,Hendrey, G.,Orion, I.,et al. NON-DESTRUCTIVE SOIL CARBON ANALYZER.,2004.