GB 18562-2001
Occupational exposure limit for calcium cyanamide in the air of workplace
QJ 2781A-2004
Determination of the carbon content, the hydrogen content and the nitrogen content of carbonaceous material
DB23/T 2492-2019
GB/T 5121.8-2024
Methods for chemical analysis of copper and copper alloys—Part 8 : Determination of oxygen, nitrogen and hydrogen contents
GB/T 4702.17-2016
Chromium metal─Determination of oxygen, nitrogen and hydrogen content─Inert gas fusion thermal infrared detection method and conductivity method
SN/T 4764-2017
Determination of total carbon,hydrogen,nitrogen and sulfur content in coal-Elemental analyzer method
YB/T 6183-2024
DB32/T 3595-2019
SN/T 3005-2011
Test method for instrumental determination of carbon,hydrogen,nitrogen and sulfur in organic chemicals
DB13/T 2768.2-2018
YS/T 587.15-2023
YB/T 4307-2012
Iron,steel and alloy-Determination of oxygen,nitrogen and hydrogen contents-TOF-mass spectroscopy method after fusion in a current of inert gas(Routine method)
QJ 2781-1995
KS M ISO 16948-2021
Solid biofuels — Determination of total content of carbon, hydrogen and nitrogen
BS EN ISO 16948:2015
Solid biofuels. Determination of total content of carbon, hydrogen and nitrogen
ISO 16948:2015
Solid biofuels — Determination of total content of carbon, hydrogen and nitrogen
T/GDASE 0009-2020
T/NXCL 023-2023
BS ISO 29541:2010
Solid mineral fuels. Determination of total carbon, hydrogen and nitrogen content. Instrumental method
ISO 29541:2010
Solid mineral fuels — Determination of total carbon, hydrogen and nitrogen content — Instrumental method