Table 1 Specific surface area of the particles used in the study.

Particle type	Abbreviation	Surface area (m2/g)
Carbon black nanoparticle	CB‐np	254.
Titanium dioxide nanoparticle	TiO2‐np	50.6
Nickel nanoparticles†	Ni	36.9
Cobalt nanoparticles†	Co	36.2
Carbon black	CB	7.92
Titanium dioxide	TiO2	6.64
Barium sulphate	BaSO4	3.68
Quartz	DQ12	10.1

†These particles (Ni and Co) were included in the glutathione assays only.