Determination of the Carbon, Hydrogen and Nitrogen Contents of Alanine and Their Uncertainties Using the Certified Reference Material L-Alanine (NMIJ CRM 6011-a)

作者：Itoh Nobuyasu^*; Sato Ayako; Yamazaki Taichi; Numata Masahiko; Takatsu Akiko

来源：Analytical Sciences, 2013, 29(12): 1209-1212.

DOI：10.2116/analsci.29.1209

• CHN analyzer
• CHN content
• uncertainty
• certified reference material (CRM)
• alanine

The carbon, hydrogen, and nitrogen (CHIN) contents of alanine and their uncertainties were estimated using a CHN analyzer and the certified reference material (CRM) L-alanine. The CHIN 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 %26lt;= 0.4%.

• 出版日期2013-12