GB/T 223.63-2022
Iron, steel and alloy—Determination of manganese content—Sodium (potassium) periodate spectrophotometric method
GB/T 5121.24-2008
Methods for chemical analysis of copper and copper alloys - Part 24:Determination of selenium and tellurium content
T/HNNMIA 50-2023
SN/T 4376-2015
T/NSFST 001-2020
GB/T 20127.10-2006
Steel and alloy - Determination of trace element contents Part 10: Determination of selenium content by hydride generation-atomic fluorescence spectrometric method
GB/T 4103.18-2024
Methods for chemical analysis of lead and lead alloys—Part 18:Determination of silver, copper, bismuth, arsenic, antimony, tin, zinc, iron, cadmium, nickel, magnesium, aluminum, calcium, selenium and tellurium contents—Inductively coupled plasma mass spectrometry
GB/T 5121.28-2021
Methods for chemical analysis of copper and copper alloys—Part 28:Determination of chromium,iron,manganese,cobalt,nickel,zinc,arsenic,selenium,silver,cadmium,tin,antimony,tellurium,lead and bismuth content—Inductively coupled plasma-mass spectrometry
KS M ISO 7780-2016
Rubber and rubber latices-Determination of manganese content-Sodium periodate photometric methods
GB/T 44971-2024
Soil selenium grade
HG/T 4697-2014
HG/T 4517-2013
Sodium selenite for industrial use
DB41/T 1871-2019
GB 1903.56-2022
HG 2937-1999
Feed grade sodium selenite
DB36/T 566-2017
DB5325/T 104-2023
DB61/T 556-2018
DB13/T 2702-2018
GB 1903.9-2015