title: Fully automated photocolorimetric method for dissolved silica in oil well water rich in sulfide and bicarbonate.
abstract: A fully automated photocolorimetric method for dissolved silica in oil well water rich in sulfide and bicarbonate is proposed; the method is based on yellow silicomolybdic heteropolyacid. To eliminate the interference of sulfide a treatment with bromate is utilized. The analytical range is 1-30 mg L(-1); with the automatically performed dilution it extends up to 300 mg L(-1), RSD 5.5%.
authors.affiliation: Spectronika, Dokukina Street 16, bld. 1, 129226 Moscow, Russia. Electronic address: korolev@spektronika.ru.
authors.forename: Dmitry N
authors.initials: DN
authors.lastname: Korolev
authors.affiliation: Tatneft, Research Center, Musy Djalilya Street 32, 423236 Bugulma, Russia.
authors.forename: Evgeny S
authors.initials: ES
authors.lastname: Buslaev
authors.affiliation: Spectronika, Dokukina Street 16, bld. 1, 129226 Moscow, Russia.
authors.forename: Aleksandr I
authors.initials: AI
authors.lastname: Elefterov
keywords: Automated photocolorimetric analysis; Dissolved silica; Interference of sulfide; Oil well water; Yellow silicomolybdic acid