During the time window (~40 s) over which the CCC values were
calculated, a 38% decrease in A for NPs in NaCl solutions (153 and
537 mM) was observed, while for identical ALG-coated NPs deposited
in natural fjord waters, A remained stable (109AgNP-ALG) or showed a
minor reduction of 10 ± 0.35% (AgNP-ALG). Moreover, if the time required
to decrease A by half is compared,we observed significant differences
between the artificial and natural waters. A period of 1–2minwas
sufficient to decrease the initial value of A in NaCl solutions (153 and
537 mM) by two fold (Fig. 3); nevertheless, for natural fjord waters a
period of ca. 5 h was required to obtain an identical reduction in A for
the ALG-coated NPs (Video S3).