咨询热线
13820734559
QQ：1454116470
天津欧捷科技代理瑞士santis,英国labco,美国alpha,德国元素elementar,美国thermo等品牌耗材
咨询热线
13820734559
QQ：1454116470
USGS26 , Ammonium Sulfate,硫酸铵,IAEA同位素标样 天津欧捷科技有限公司代理奥地利IAEA原子能机构同位素标样,USGS26 , Ammonium Sulfate,硫酸铵... USGS26 , Ammonium Sulfate,硫酸铵,IAEA同位素标样 Inorganic , Pure Substance
Unit Size: 0.5g
USGS26 is a dried salt of ammonium sulfate [(NH4)2 SO4]) which was prepared in 1992 by J. K. Böhlke, U.S. Geological Survey [1]. The material was prepared from Fisher ammonium sulfate (A938-500, lot # 915021) and Cambridge Isotopes ammonium sulfate (10% 15N; lot BI 1050) by dissolving and re-crystallizing a mixture of normal reagent salt and 15N enriched salt. The δ15N value of this reference material is the result of the statistical evaluation of interlaboratory comparisons [1,2].
| Analyte | Value | Unit | SD | R/I/C |
|---|---|---|---|---|
| δ15N | +53.7 | ‰air N2 | 0.4 | C |
(R/I/C) Classification assigned to the property value for analyte (Recommended/Information/Certified)
