Deliming using CO 2 Supercritical Fluid(CO 2 SCF) as a reactant was investigated,and the effect of the pressure,temperature and time on the deliming and degrease was studied.The results showed that CO 2 SCF can be use...Deliming using CO 2 Supercritical Fluid(CO 2 SCF) as a reactant was investigated,and the effect of the pressure,temperature and time on the deliming and degrease was studied.The results showed that CO 2 SCF can be used as a deliming agent.Deliming using CO 2 SCF as reactant had some advantages such as rapidity and completness compared to completely than conventional methods,and can pavoidnt the formation of calcium spot.Furthermore,this new deliming method had some degreasing ability.展开更多
The purifying treatment was conducted for the waste water from rubbish,printing,dyeing,and pharmaceutic industry by self-prepared polyferric sulphate(PFS).The purifying conditions were optimized.The results showed the...The purifying treatment was conducted for the waste water from rubbish,printing,dyeing,and pharmaceutic industry by self-prepared polyferric sulphate(PFS).The purifying conditions were optimized.The results showed the purifying result was good.The self-prepared PFS is suitable for the treatment of waste water.展开更多
Oxidation degradation of wastewater containing thiosemicarbazide by ClO 2 has been studied.The results indicate that thiosemicarbazide is degradated to the nontoxic inorganics,including SO 2- 4,N 2 and CNO -.It has be...Oxidation degradation of wastewater containing thiosemicarbazide by ClO 2 has been studied.The results indicate that thiosemicarbazide is degradated to the nontoxic inorganics,including SO 2- 4,N 2 and CNO -.It has been proved that the mass ratio of ClO 2 to thiosemicarbazide and pH influence the removal ratio of COD obviously,but reaction time and temperature have weak effect.When pH≤2,R=2.0 and reaction time is 15min,removal ratio of COD achieves the highest value at ordinary temperature.Removal ratio of COD of pesticide wastewater containing thiosemicarbazio is about 86.0% under such condition indicating that the degradation effect is good.展开更多
Sophra alopecaroides seed,a Chinese medicine,has well medical effect.Its effective components is alkaloid.We determined the content of total alkaloids with acid dye spectrophotometer.The linear rang was 0～20μg/ml,re...Sophra alopecaroides seed,a Chinese medicine,has well medical effect.Its effective components is alkaloid.We determined the content of total alkaloids with acid dye spectrophotometer.The linear rang was 0～20μg/ml,recovery,98.53%～102.4%.The method is simple,convenient,sensitive,accurate and reliable.展开更多
Indirect ion chromatographic method of thiosemicarbazide has been studied in this paper.Oxidation conditions of the certatin concentration thiosemicarbazide to sulfate have been concluded by orthogonal tests.Linear ra...Indirect ion chromatographic method of thiosemicarbazide has been studied in this paper.Oxidation conditions of the certatin concentration thiosemicarbazide to sulfate have been concluded by orthogonal tests.Linear range of the method is 1.00～50.00mg·L -1 ,detectability is 0.5mg·L -1 ,the relative standard deviation is less than 5%,rate of recovery is 98.0～104%.It shows that the method is simple,accurate and sensitive for microdetermination of thiosemicarbazide.展开更多
It is reported that Coulomb titration analysis maybe used to determine the acid valence of food oil.This method is accurat,simple,inexpensive and rapid as compared with national standard indicator method.
文摘Deliming using CO 2 Supercritical Fluid(CO 2 SCF) as a reactant was investigated,and the effect of the pressure,temperature and time on the deliming and degrease was studied.The results showed that CO 2 SCF can be used as a deliming agent.Deliming using CO 2 SCF as reactant had some advantages such as rapidity and completness compared to completely than conventional methods,and can pavoidnt the formation of calcium spot.Furthermore,this new deliming method had some degreasing ability.
文摘The purifying treatment was conducted for the waste water from rubbish,printing,dyeing,and pharmaceutic industry by self-prepared polyferric sulphate(PFS).The purifying conditions were optimized.The results showed the purifying result was good.The self-prepared PFS is suitable for the treatment of waste water.
文摘Oxidation degradation of wastewater containing thiosemicarbazide by ClO 2 has been studied.The results indicate that thiosemicarbazide is degradated to the nontoxic inorganics,including SO 2- 4,N 2 and CNO -.It has been proved that the mass ratio of ClO 2 to thiosemicarbazide and pH influence the removal ratio of COD obviously,but reaction time and temperature have weak effect.When pH≤2,R=2.0 and reaction time is 15min,removal ratio of COD achieves the highest value at ordinary temperature.Removal ratio of COD of pesticide wastewater containing thiosemicarbazio is about 86.0% under such condition indicating that the degradation effect is good.
文摘Sophra alopecaroides seed,a Chinese medicine,has well medical effect.Its effective components is alkaloid.We determined the content of total alkaloids with acid dye spectrophotometer.The linear rang was 0～20μg/ml,recovery,98.53%～102.4%.The method is simple,convenient,sensitive,accurate and reliable.
文摘Indirect ion chromatographic method of thiosemicarbazide has been studied in this paper.Oxidation conditions of the certatin concentration thiosemicarbazide to sulfate have been concluded by orthogonal tests.Linear range of the method is 1.00～50.00mg·L -1 ,detectability is 0.5mg·L -1 ,the relative standard deviation is less than 5%,rate of recovery is 98.0～104%.It shows that the method is simple,accurate and sensitive for microdetermination of thiosemicarbazide.
文摘It is reported that Coulomb titration analysis maybe used to determine the acid valence of food oil.This method is accurat,simple,inexpensive and rapid as compared with national standard indicator method.
