相关实验视频

Updated: Jun 3, 2025

Speciation and Bioavailability Measurements of Environmental Plutonium Using Diffusion in Thin Films
12:22

Speciation and Bioavailability Measurements of Environmental Plutonium Using Diffusion in Thin Films

Published on: November 9, 2015

11.3K

第一个小麦认证的参考材料用于在环境中测量有机结合的三

Marielle Crozet1, Audrey Bacchetta2, Nicolas Baglan3

  • 1CEA, DES, ISEC, DMRC, CETAMA, Univ. Montpellier, Marcoule, France.

Talanta
|January 12, 2025
PubMed
概括

在环境样本中精确测量有机结合的 (OBT) 是一个挑战. 这项研究引入了第一个经过认证的参考材料,以提高OBT放射性测量的准确性.

关键词:
认证 认证 认证 认证 认证 认证经过认证的参考材料 (CRM)实验室间比较 (ILC)测量不确定性 测量不确定性有机结合的三 (OBT)

更多相关视频

Untargeted Liquid Chromatography-Mass Spectrometry-Based Metabolomics Analysis of Wheat Grain07:10

Untargeted Liquid Chromatography-Mass Spectrometry-Based Metabolomics Analysis of Wheat Grain

Published on: March 13, 2020

9.6K
Investigating Long-Distance Transport of Perfluoroalkyl Acids in Wheat via a Split-Root Exposure Technique07:06

Investigating Long-Distance Transport of Perfluoroalkyl Acids in Wheat via a Split-Root Exposure Technique

Published on: September 28, 2022

1.5K

相关概念视频

Chemical Shift: Internal References and Solvent Effects01:17

Chemical Shift: Internal References and Solvent Effects

In an NMR sample, precise measurement of the absolute absorption frequencies of nuclei is difficult. A standard internal reference compound is added, and the frequency difference between the reference signal and sample signals is measured.
The internal reference compound generally used in NMR spectroscopy is tetramethylsilane (TMS). TMS is preferred because it is chemically inert, soluble in NMR solvents, and easily removable. Also, the highly shielded methyl protons in TMS yield an intense...
599