Table 1.

The size and size distribution of AuNPs obtained by TEM and DLS analysis together with concentrations of AuNPs (AAS) and Au ions (ICP-MS)

	NP size (nm)		Concentration of AuNPs/Au ions (μg/L)
	TEM	DLS	AuNPs (× 10−3)	Au ionsa	Au ionsb
10 nm	11.8 ± 2.7	9.6 ± 3.7	30.2 ± 0.9	339.8 ± 27.4	1.6 ± 0.3
14 nm	15.1 ± 3.8	14.3 ± 3.9	29.8 ± 0.8	328.6 ± 24.1	2.1 ± 0.5
18 nm	19.6 ± 3.2	18.1 ± 4.1	29.8 ± 0.8	314.9 ± 29.9	1.8 ± 0.4

^aImmediately after the synthesis

^bAfter centrifugation of as-synthesized AuNPs and its dilution to probing concentration of 100 mg/L