Water quality — Determination of dissolved sulfide — Photometric method using methylene blue
NORMA vydaná dňa 9.9.1992
Označenie normy: ISO 10530:1992
Dátum vydania normy: 9.9.1992
Počet strán: 9
Približná hmotnosť: 27 g (0.06 libier)
Krajina: Medzinárodná technická norma
Kategória: Technické normy ISO
Description / Abstract: 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.