title: Determination of the carbon, hydrogen and nitrogen contents of alanine and their uncertainties using the certified reference material L-alanine (NMIJ CRM 6011-a).
abstract: The carbon, hydrogen, and nitrogen (CHN) contents of alanine and their uncertainties were estimated using a CHN analyzer and the certified reference material (CRM) L-alanine. The CHN contents and their uncertainties, as measured using the single-point calibration method, were 40.36 ± 0.20% for C, 7.86 ± 0.13% for H, and 15.66 ± 0.09% for N; the results obtained using the bracket calibration method were also comparable. The method described in this study is reasonable, convenient, and meets the general requirement of having uncertainties ≤ 0.4%.
authors: National Metrology Institute of Japan (NMIJ), National Institute of Advanced Industrial Science and Technology (AIST).
authors: Nobuyasu
authors: N
authors: Itoh
authors: Ayako
authors: A
authors: Sato
authors: Taichi
authors: T
authors: Yamazaki
authors: Masahiko
authors: M
authors: Numata
authors: Akiko
authors: A
authors: Takatsu
mesh_terms: D000409:Alanine / Q000737:chemistry*; D002244:Carbon / Q000032:analysis*; D006859:Hydrogen / Q000032:analysis*; D009584:Nitrogen / Q000032:analysis*; D012015:Reference Standards; D035501:Uncertainty
chemical_list: D002244:Carbon; D006859:Hydrogen; D009584:Nitrogen; D000409:Alanine