A HG63 Moisture Analyzer (Mettler-Toledo AG Laboratory &
Weighing Technologies, Switzerland)was used forwater content determination.
Samples of 1 g were used for analysis; drying temperature
was at 105 °C. The automatic “weight loss per unit of time” switch-off
criterion was used for measurements, when drying is automatically
ended as soon as the mean weight loss (Δ g in mg) per unit of time (Δ
t in seconds) drops below a preset value. A SNOL 20/300 heating oven
(Snol-Term Ltd., Russia) was used for the evaporation of ND (SDND)
aqueous dispersions. An Ohaus Explorer Pro Analytical Balance
(Ohaus, Switzerland; max weight 210 g, repeatability std. dev. 0.1 mg)
was used for weighing dry powder samples. Automatic Eppendorf Research
pipettes (Eppendorf International, Germany) and A-class volumetric
flasks (ISOLAB, Germany) from borosilicate glass with a
volume of (50.000 ± 0.060) ml were used for diluted mercury solution
preparation.