Label-free in vitro toxicity and uptake assessment of citrate stabilised gold nanoparticles in three cell lines

Table 1 Physicochemical properties of gold nanoparticles in milli-Q water

Nanoparticle	Particle size determined by TEM	ζ-potential	Citrate concentration	UV–vis	Particles/ml (at 1 nM)
14 nm AuNP	14 ± 2 nm	−33.5 mV	0.025%	520 nm	2.25 x 10¹² nps/ml
20 nm AuNP	20 ± 2 nm	−37.9 mV	0.023%	524 nm	7.76 x 10¹¹ nps/ml

ISSN: 1743-8977