AUTOMATED-ANALYSIS OF NITROUS-OXIDE

被引：34

作者：

PARKIN, TB

机构：

[1] Beltsville Agricultural Research, Cent, Soil Nitrogen &, Environmental Chemistry Lab,, Beltsville Agricultural Research Cent, Soil Nitrogen & Environmental Chemistry Lab, Beltsville,

来源：

SOIL SCIENCE SOCIETY OF AMERICA JOURNAL | 1985年 / 49卷 / 01期

关键词：

CHROMATOGRAPHIC ANALYSIS - Gas - NITROGEN COMPOUNDS - Automatic Testing;

D O I：

10.2136/sssaj1985.03615995004900010054x

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

An autosampler was developed to interface with a gas chromatograph for N//2O analyses. The sampler was comprised of a modified fraction collector and pneumatic valves all controlled by a microprocessor unit. Cost of the autosampler system including the fraction collector was estimated to be less than 3500. The sampler was designed to analyze gas samples stored in rubber-stoppered, glass vials. Use of vials resulted in a slight loss of sensitivity due to dilution and absorption of N//2O; however, accuracy was the same as could be obtained by manual syringe injections. Refs.

引用

页码：273 / 276

页数：4

共 4 条

[1] NITROUS-OXIDE EMISSION FROM THE SOIL SURFACE - CONTINUOUS MEASUREMENT BY GAS-CHROMATOGRAPHY [J].

CHRISTENSEN, S .

SOIL BIOLOGY & BIOCHEMISTRY, 1983, 15 (04) :481-483

[2] CHAMBER SYSTEMS FOR MEASURING NITROUS-OXIDE EMISSION FROM SOILS IN THE FIELD [J].

DENMEAD, OT .

SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1979, 43 (01) :89-95

[3] STORAGE OF NITROUS-OXIDE ON MOLECULAR-SIEVES [J].

DUXBURY, JM ;

VOGHEL, S .

SOIL SCIENCE SOCIETY OF AMERICA JOURNAL, 1982, 46 (06) :1336-1338

[4]

ROBERTSON GP, 1985, PLANT SOIL

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