Water quality - Determination of dissolved sulfide - Photometric method using methylene blue
The specified method is applicable to sulfide determination in a mass concentration range from 0,04 mg/l to 1,5 mg/l. The following ions do not interfere in specified mass concentrations: cyanide, iodide, thiosulfate, thiocyanate, sulfite. The principle is filtration, conservation of the sulfide in the filtrate, stripping of the sulfides, formation of leukomethylene blue, measurement of the absorbance of this complex at a wavelength of 665 nm. Annex A describes standardization of sulfide stock solution.
| SDO | ISO: International Organization for Standardization |
| Document Number | ISO 10530 |
| Publication Date | Not Available |
| Language | en - English |
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| Committee | ISO TC 147/SC 2 |
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