GB/T 6730.8-2016(\u82f1\u6587\u7248)
铁矿石 亚铁含量的测定 重铬酸钾滴定法
GB/T 24583.1-2019(\u82f1\u6587\u7248)
钒氮合金 钒含量的测定 硫酸亚铁铵滴定法
GB/T 6730.38-2017(\u82f1\u6587\u7248)
铁矿石 钴含量的测定 亚硝基-R盐分光光度法
GB/T 24226-2009(\u82f1\u6587\u7248)
铬矿石和铬精矿 钙含量的测定 火焰原子吸收光谱法
GB/T 6730.34-2017(\u82f1\u6587\u7248)
铁矿石 锡含量的测定 邻苯二酚紫-溴化十六烷基三甲胺分光光度法
GB/T 35996-2018(\u82f1\u6587\u7248)
磷矿石和磷精矿中八种元素含量的快速测定 X射线荧光光谱法
GB/T 23834.1-2009
Chemical analysis method for stannous sulfate - Part 1: Determination of stannous sulfate content - Volumetric method of potassium dichromate
GB/T 6730.70-2013
Iron ores - Determination of total iron content - Titrimetric method after tin(Ⅱ) chloride reduction
GB/T 6730.38-2017e
]Iron ores—Determination of cobalt content—Nitroso-R salt spectrophotometric method
GB/T 6730.38-2017
Iron ores—Determination of cobalt content—Nltroso-R salt spectrophotometric method
SN/T 4060-2014
Determination of seleniate and selenite in export health care products
GB/T 2441.9-2010
Determination of urea - Part 9: Methylenediurea content - Spectrophotometric method
DB32/T 1438-2009
GB/T 11060.2-2023
Natural gas—Determination of sulfur compound—Part 2: Determination of hydrogen sulfide content by methylene blue method
GB/T 23834.4-2009
Chemical analysis method for stannous sulfate - Part 4: Determination of lead and copper content - Flame atomic absorption spectrometry
SN/T 3341-2012
GB/T 23834.6-2009
Chemical analysis method for stannous sulfate - Part 6: Determination of iron content - 1,10-phenanthroline spectrophotometry
DB43/T 2200-2021
GB/T 11060.2-1998
Natural gas—Determination of hydrogen sulfide content—Methylene blue method
GB/T 2441.9-2001
Determination of Urea—Determination of methylenediurea content—Spectrophotometric method