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| Chinese National Standard Category: Iron ore |
| English Title: | Methods for chemical analysis of iron ores; The diphenyl carbazide photometric method for the determination of chromium content |
| Chinese Title: | 铁矿石化学分析方法 二苯基碳酰二肼光度法测定铬量 |
| Standard No.: | GB 6730.30-1986 |
| Category No.: | D31 |
| Issued by: | National Standards Bureau |
| Issued on: | 1986-08-19 |
| Implemented on: | 1987-8-1 |
| Status: | superseded |
| Superseded by: | GB/T 6730.30-2017 Iron ores--Determination of chromium content--Diphenyl carbazide spectrophotometric method |
| Superseded on: | 2018-6-1 |
| Abolished on: | 2018-06-01 |
| Superseding: | GB 1375-1978 |
| Word Count: | 2500 words |
| Similar Standards: | GB/T 10322.7-2004 YS/T 1047.9-2015 GB/T 10322.9-2023 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 |
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