铁矿石　锌含量的测定　1-(2-吡啶偶氮)-2-萘酚分光光度法
Iron ores—Determination of zinc content—1-(2-pyridylazo)-2-naphthoI spectrophotometric method

2017-09-07

铁矿石 锌含量的测定 1-（2-吡啶偶氮）-2-萘酚分光光度法
Iron ores—Determination of zinc content—1-(2-pyridylazo)-2-naphthol spectrophotometric method

2017-09-07

铁矿石 钴含量的测定 4-[（5-氯-2-吡啶）偶氮]-1，3-二氨基苯分光光度法
Iron ores—Determination of cobalt content—4-[(5-chloro-2-pyridyl)azo]-1,3-diamino-benzene spectrophotometric method

2017-09-07