STN 72 2041-7
| Name: | STN 72 2041-7 |
| Validity: | Valid |
| Number of pages: | 4 |
| Language: |
CS
|
| Paper: | 2,80€ |
| Electronic version |
a) Only read (without ability to print and copy)
2,52€ b) Without ability to print, with ability to copy (printscreen) 2,80€ c) With ability to print and copy (printscreen) 3,64€ |
| Slovak title | Chemický rozbor oceliarskej trosky. Časť 7: Stanovenie oxidu manganatého vo vzorkách neobsahujúcich fluór |
| English title | Chemical analysis of steel-making slag. Determination of manganese (II) oxide content in samples free of fluorine |
| Release Date: | 01. 08. 1992 |
| Date of withdrawal: | |
| ICS: | 71.040.40, 91.100.15, 91.100.20 |
| Sorting character/National clasification code | 72 2041 |
| Level of incorporation: | |
| Official Journal | 08/92 |
| Amendments | |
| Replaced by: | |
| Repleces: | STN 72 2041-9:1976-07, STN 72 2041-8:1976-07 |
| Note in Official Journal: | |
| Subject of the standard: | Tato norma urcuje spektrofotometrickou metodou pro stanoveni oxidu manganateho. Z alikvotniho podilu zasobniho roztoku po oddeleni kyseliny kremicite a chromu se vytesni kyselina chlorovodikova odparenim s kyselinou dusicnou a sirovou. Pak se oxiduji manganate soli jodistanem draselnym na manganistan a intenzita zbarveni roztoku se meri spektrofotometricky pri vlnove delce 525 nm. Vliv pritomnosti zelezitych soli se odstrani stisnenim kyselinou orthofosforecnou. |