. Author manuscript; available in PMC: 2015 Feb 17.

Published in final edited form as: J Environ Sci Health C Environ Carcinog Ecotoxicol Rev. 2010 Jul;28(3):188–230. doi: 10.1080/10590501.2010.504980

Table 1. Hydroxyl Radicals Generated by Paramagnetic Chromium Radicals in ESR (25).

Cr ⁶⁺		Cr⁵⁺	Cr⁴⁺	Cr³⁺
				Cr³⁺
GSH	Cr⁵⁺ Cr⁴⁺ GS· ·OH
Cysteine	RS· O₂·^- RSSR· ·OH	OH
Penicillamine		OH
H₂O₂		Cr⁶⁺ ·OH	Cr⁵⁺ ·OH	·OH^*
Lipid peroxide		·OH		R· RO·

Vitamin C Cr⁵⁺ Cr⁴⁺ formyl·alkyl-carbonyl·

at pH 10