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中文名称：L-glutamic aid Inorganic Pure Substance
英文名称：L-glutamic aid Inorganic Pure Substance订货以英文名称为准。
产品编号：USGS41CAS：/
品牌：标准物质产地：进口
标准值：见证书分子式：/
规格 市场价(元) 折后价(元) 供货周期 数量 加入购物车 0.5g 0.00 0.00 3-4周 加入购物车
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产品详细介绍
USGS41L-glutamic aid Inorganic Pure Substance
This reference material was prepared by Qi et al. [1] from commercially available L-glutamic acids which were dissolved in water and mixed with small amounts of L-glutamic acids isotopically enriched in δ13C or in δ15N. The solution was dried again and packaged. Its recommended δ13C value was determined in an international calibration [2].
Analyte Value Unit SD R/I/C δ13C +37.626 ‰VPDB 0.049 C δ15N +47.6 ‰air N2 0.2 R (R/I/C) Classification assigned to the property value for analyte (Recommended/Information/Certified)
References:
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QI, H., COPLEN, T.B., GEILMANN, H., BRAND, W.A., BÖHLKE, J.K., Two new organic reference materials for δ13C and δ15N measurements and a new value for the δ13C of NBS 22 oil, Rapid Commun. Mass Spectrom. 17 (2004) 2483-2487.
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COPLEN, T.B., BRAND, W.A., GEHRE, M., GRÖNING M., MEIJER, H.A.J., TOMAN, B., VERKOUTEREN, R.M., New Guidelines for 13C Measurements, Anal. Chem. 78 7 (2006) 2439-2441.
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