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中文名稱：L-谷氨酸中碳氧同位素標準物質(zhì)
英文名稱：L-glutamic acid Inorganic pure substance訂貨以英文名稱為準。
產(chǎn)品編號：USGS40CAS：/
品牌：標準物質(zhì)產(chǎn)地：進口
標準值：見證書分子式：/
規(guī)格 市場價(元) 折后價(元) 供貨周期 數(shù)量 加入購物車 1.0g 0.00 0.00 3-4周 加入購物車
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產(chǎn)品詳細介紹
USGS40L-谷氨酸中碳氧同位素標準物質(zhì)L-glutamic acid Inorganic? ?pure substance
USGS40 was prepared by Qi et al. [1] from commercially available L-glutamic acids. Its recommended δ13C value was determined in an international calibration [2].
Analyte Value Unit SD R/I/C δ13C -26.389 ‰VPDB 0.042 C δ15N -4.5 ‰air N2 0.1 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., B?HLKE, 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., GR?NING 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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