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Chinese National Standard Category: Iron ore

English Title: Methods for chemical analysis of iron ores - The 1-(2-pyridylazo)-2-naphthol photometric method for the determination of zinc content
Chinese Title: 铁矿石化学分析方法 1-(2-吡啶偶氮)-2-萘酚光度法测定锌量
Standard No.: GB 6730.44-1986
Category No.: D31
Issued by: SAC
Issued on: 1986-8-19
Implemented on: 1987-8-1
Status: abolished
Superseded by:GB/T 6730.44-2017 Iron ores―Determination of zinc content―1-(2-pyridylazo)-2-naphthol spectrophotometric method
Superseded on:2018-6-1
Abolished on:2018-06-01
Superseding:GB 1382-1978
Word Count:2000 words
Similar Standards: GB/T 10322.7-2004   YS/T 1047.9-2015   GB/T 6730.86-2023   GB/T 6730.85-2023   GB/T 6730.87-2023   GB/T 10322.1-2023   GB/T 6730.84-2023   GB/T 42523-2023   GB/T 42524-2023   GB/Z 42521-2023   GB/T 42522-2023   GB/T 6730.51-2023   GB/Z 42520-2023   GB/Z 42358-2023   GB/T 6730.61-2022   GB/T 20565-2022   GB/T 6730.60-2022   GB/T 10322.6-2022   GB/T 6730.5-2022   GB/T 6730.28-2021  
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