Samples were placed in 4°C for several hours prior to analysis to deposit
the large colloids. Before analysis, the Guiyu River and Chendian
Lake samples were diluted 20 times to make sure that the particle
events less than 10% of the total reading. The raw data of 107Ag and
197Au in the water samples were showed in Fig. 10 (a)–(d) and Fig. 11
(a)–(d) respectively. Numerous NP pulses of Ag and Au were observed
in surface water (Guiyu River # and Chendian Lake #). Assuming that
the nanoparticle shape was spherical, the 107Ag and 197Au of size distribution
histograms of Guiyu River # and Chendian Lake # would be calculated
based on optimized SP-ICPMS theory, results were shown in