1.1.1.122 hydroxylamine stimulation at high concentrations 285806 1.1.1.122 KNO3 activation at 1-1.3 M, optimal pH shifts to 9-9.5 285803 1.1.1.122 NaBr activation at 1-1.3 M, optimal pH shifts to 9-9.5 285803 1.1.1.122 NaCl activation at 1-1.3 M, optimal pH shifts to 9-9.5 285803 1.1.1.122 NaNO3 activation at 1-1.3 M, optimal pH shifts to 9-9.5 285803 1.1.1.122 Tris-HCl activation at 1-1.3 M, optimal pH shifts to 9-9.5 285803