Due to the altitude and dryness of the atmosphere, vigorous radiative cooling occurs throughout the year, and exceptional daily temperature variances are not uncommon.
That said, there is no doubting Roberts's talent for evoking place and atmosphere, her vigorous intelligence and mastery of descriptive language.
NZVI was synthesized by adding 1 M NaBH4 solution into 0.5 M FeCl3 solution during vigorous stirring under N2 atmosphere.
Briefly, FeCl2·4H2O and FeCl3·6H2O (molar ratio 1 2) were dissolved in water (50 ml) under an N2 atmosphere with vigorous stirring.
Briefly, FeCl2.4H2O (396 mg) and platinum (II) acetylacetonate (Pt acac 2) (196 mg) were mixed in benzyl ether (30 mL) with vigorous stirring under nitrogen atmosphere for 20 min.
5-mL APTES was added into the MNPs solution and the reaction mixture was kept at 80 °C for 10 h under nitrogen atmosphere with vigorous mechanical stirring.
In a typical synthesis, Fe acac 3 (2 mmol), PEG 4000 (6 mmol), oleic acid (6 mmol), and octadecyl amine (6 mmol) were mixed into 40 mL of diphenyl ether in a N2 atmosphere under vigorous stirring.
The polymerization was initiated by the addition of 1.0 M solution of HCl in diethyl ether (1.5 ml, 1.5 mmol); the reaction was maintained at 25°C for 24 h with vigorous stirring under nitrogen atmosphere.
Afterwards, the capping agent solution was added drop by drop at different rates of 2 to 3, 4 to 5, and 6 to 7 per second to the ZnCl2 solution under vigorous stirring in N2 atmosphere.
A solution containing 0.25 mol of Mg (NO3) 2.6H2O and 0.125 mol of Al (NO3) 3.9H2O in 250.00 cm3 of distilled water was added drop wise to a solution containing 0.25 mol of NaNO3 in 100.00 cm3 of distilled water, under an inert atmosphere and vigorous stirring condition at 60 °C.
After 10 min, the solution of Na2S was poured drop by drop at different rates of 2 to 3, 4 to 5, and 6 to 7 per second to the solution containing ZnCl2 and ME under vigorous stirring in N2 atmosphere.
