GB/T 36144-2018 Limit on element content of lead,arsenic,cadmium,mercury,fluorine and chlorine in iron ore

SN/T 2262 SN/T 2680 SN/T 2765.3 SN/T 2765.4 SN/T 3004 GB/T 6730.26-1986 Methods for chemical analysis of iron ores The thorium nitrate volumetric method for the determination of fluorine content GB/T 6730.26-2017 Iron ores—Determination of fluorine content—Thorium nitrate titrimetric method GB/T 6730.27-1986 Methods for chemical analysis of iron ores The lanthanum-alizarin complexon photometric method for the determination of fluorine content GB/T 6730.27-2017 Iron ores—Determination of fluorine content—Lanthanum-alizarin complexion spectrophotometric method GB/T 6730.28-1986 Methods for chemical analysis of iron ores The ion-selective electrode method for the determination of fluorine content GB/T 6730.28-2006 Iron ores—Determination of fluorine content—Ion-selective electrode method GB/T 6730.28-2021 Iron ores—Determination of fluorine content—Ion-selective electrode method GB/T 6730.42-1986 Methods for chemical analysis of iron ores The dithizone photometric method for the determination of lead content GB/T 6730.42-2017 Iron ores—Determination of lead content—Dithizone spectrophotometric method GB/T 6730.45-1986 Methods for chemical analysis of iron ores The diethyldithiocar bamic acid Ag salt photometric method for the determination of arsenic content GB/T 6730.45-2006 Iron ores—Determination of arsenic content—Arseno-molybdenum blue spectrophotometric method after hydrogen arsenide separation GB/T 6730.46-1986 Methods for chemical analysis of iron ores The extraction separation-molybdenum blue photometric method for the determination of arsenic content GB/T 6730.46-2006 Iron ores—Determination of arsenic content—Arseno-molybdenum blue spectrophotometric method after the distillation separation GB/T 6730.54-2004 Iron ores—Determination of lead content—Flame atomic absorption spectrometric method GB/T 6730.67-2009 Iron ores—Determination of arsenic content—Hydride generation atomic absorption spectrometric method GB/T 6730.69-2010 Iron ores—Determination of fluoride and chloride content—Ion chromatography GB/T 6730.72-2016 Iron ores—Determination of arsenic,chromium,cadmium,lead and mercury content—Inductively coupled plasma-mass spectrometry method (ICP-MS) GB/T 10322.1-2000 Iron ores—Sampling and sample preparation procedures GB/T 10322.1-2014 Iron ores—Sampling and sample preparation procedures GB/T 10322.1-2023 Iron ores—Sampling and sample preparation procedures GB/T 20565-2006 Iron ores and direct reduced iron—Vocabulary GB/T 20565-2022 Iron ores and direct reduced iron—Vocabulary GB/T 31947-2015 Iron ores—Determination of mercury content—Solid sampling and direct mercury analysis method GB/T 6730.45-2025 Iron ores—Determination of arsenic content—Arseno-molybdenum blue spectrophotometric method after hydrogen arsenide separation GB/T 6730.46-2025 Iron ores—Determination of arsenic content—Arseno-molybdenum blue spectrophotometric method after the distillation separation