Table 1
Element analysis of the etched Au NCs with EDS
Element	Weight percentage (wt.%)	Atomic percentage (at.%)
C	13.48	49.45
N	3.80	11.95
O	1.00	2.76
S	15.26	20.97
Au	66.47	14.87
Total	100.00	100.00

Lian et al. Nanoscale Research Letters 2012 7:348   doi:10.1186/1556-276X-7-348