Reijnders, HFRrivmvan Staden, JJGriepink, B2025-03-052025-03-051979https://rivm.openrepository.com/handle/10029/628596Photometry in a continuous flow system. Determination of sulphate in a continuous flow system in environmental samples with dimethylsulphonazo (III)ArticleZ.anal.Chem. 295 (1979) 1222025-03-05