PREPARATION OF PLANT-SAMPLES FOR HIGH-PRECISION NITROGEN ISOTOPE RATIO ANALYSIS

被引：31

作者：

UNKOVICH, M

PATE, JS

SANFORD, P

机构：

[1] UNIV WESTERN AUSTRALIA, COOPERAT RES CTR LEGUMES MEDITERRANEAN AGR, NEDLANDS, WA 6009, AUSTRALIA

[2] WESTERN AUSTRALIA DEPT AGR, ALBANY 6330, AUSTRALIA

来源：

COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS | 1993年 / 24卷 / 15-16期

关键词：

D O I：

10.1080/00103629309368939

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Methodologies for preparation of plant samples for high precision nitrogen isotope ratio analysis are described, including detailed attention to Kjeldhal digestion, steam distillation, concentration of distillates, and generation of nitrogen gas (N2) from ammonium sulfate [(NH4)2SO4]. Apparatus developed in the authors laboratory is illustrated. Using a systematic approach to the assessment of errors associated with each of the steps in preparation and analysis procedures, the methods outlined in this paper are shown capable of determining deltaN-15 in plant material with a precision of -+/0.2 parts per thousand.

引用

页码：2093 / 2106

页数：14

共 20 条

[1]

BARRIE A, 1984, SPECTROSC-INT J, V3, P439

[2]

Bergersen F. J., 1980, Methods for evaluating biological nitrogen fixation., P65

[3] NATURAL ABUNDANCE OF N-15 AS A TOOL FOR TRACING ALDER-FIXED NITROGEN [J].