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Chinese National Standard Category: Basic standards and general methods on chemical fertilizers |
English Title: | Determination of urea—Part 4:Iron content—1,10-Phenanthroline spectrophotometric method |
Chinese Title: | 尿素的测定方法 第4部分:铁含量 邻菲啰啉分光光度法 |
Standard No.: | GB/T 2441.4-2010 |
Category No.: | G20 |
Issued by: | AQSIQ, SAC |
Issued on: | 2010-6-30 |
Implemented on: | 2011-1-1 |
Status: | valid |
Superseded by: | |
Superseded on: | |
Abolished on: | |
Superseding: | GB/T 2441.4-2001 Determination of urea-Determination of iron content-1,10-Phenanthroline spectrophotometric method |
Word Count: | 4000 words |
Similar Standards: | SN/T 0736.2-1997 JC 217-1980 SN/T 0736.3-1997 T/CNFAGS 1-2021 DB37/T 4110-2020 GB/T 43349-2023 GB/T 43274-2023 GB/T 42955-2023 GB/T 42954-2023 GB/T 42958-2023 GB/T 42307-2023 GB 18382-2021 GB/T 40459-2021 GB/T 23349-2020 GB/T 39229-2020 GB 38400-2019 GB/T 38072-2019 GB/T 38073-2019 GB/T 37500-2019 GB/T 37088-2018 |
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