https://www.selleckchem.com/pr....oducts/bms-986165.ht
Even though sulfate anion radical (SO4-) is a very reactive oxidant used in advanced oxidation processes, a reliably selective and simple colorimetric method for determining this radical can hardly be found. Peroxydisulfate (S2O82-) or peroxymonosulfate (HSO5-) can be activated with transition metal ions to produce SO4-. We have discovered that Cr(III) can be an activator for persulfate, generating Cr(VI) along with SO4-. By measuring the emerging chromate with diphenyl carbazide (DPC) spectrophotometry at 542 nm, we could measure bo
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