Extraction behavior of chlorpromazine hydrochloride (CPZ) and procaine hydro- chloride (PCN) in the system described in the title was studied. Research shows that the extraction efficiency of CPZ can amount to 96% by...Extraction behavior of chlorpromazine hydrochloride (CPZ) and procaine hydro- chloride (PCN) in the system described in the title was studied. Research shows that the extraction efficiency of CPZ can amount to 96% by twice extraction, while that of PCN is 77%. This system produces the distribution coefficients (KD) of 12.3 and 2.6 respectively for CPZ and PCN. Extraction mechanism is deduced according to ultraviolet and molecular fluorescence spectra variation of the drugs in the system studied.展开更多
The mechanism of synergistic extraction of gold in HCl media was researched with tri n octyl amine(TOA) and tri n octyl phospine oxide(TOPO). It was determined that the composition of synergistic extract is (TOAHT...The mechanism of synergistic extraction of gold in HCl media was researched with tri n octyl amine(TOA) and tri n octyl phospine oxide(TOPO). It was determined that the composition of synergistic extract is (TOAHTOPO)AuCl 4; the constant of synergistic extracting equilibrium is 10 9.20 ; and the synergistic reaction is exothermic with -17.187 kJ/K·mol of Δ H 298 . The extraction mechanism was also studied by the IR spectra and UV spectra. It is found that the extraction mechanism belongs to ion association type.展开更多
文摘Extraction behavior of chlorpromazine hydrochloride (CPZ) and procaine hydro- chloride (PCN) in the system described in the title was studied. Research shows that the extraction efficiency of CPZ can amount to 96% by twice extraction, while that of PCN is 77%. This system produces the distribution coefficients (KD) of 12.3 and 2.6 respectively for CPZ and PCN. Extraction mechanism is deduced according to ultraviolet and molecular fluorescence spectra variation of the drugs in the system studied.
文摘The mechanism of synergistic extraction of gold in HCl media was researched with tri n octyl amine(TOA) and tri n octyl phospine oxide(TOPO). It was determined that the composition of synergistic extract is (TOAHTOPO)AuCl 4; the constant of synergistic extracting equilibrium is 10 9.20 ; and the synergistic reaction is exothermic with -17.187 kJ/K·mol of Δ H 298 . The extraction mechanism was also studied by the IR spectra and UV spectra. It is found that the extraction mechanism belongs to ion association type.
