In order to reduce the pollution of Cl2 and HCl released during extracting vanadium from stone coal by sodium chloride roasting, a modified salt-roasting process was proposed by adding calcined lime in roasting proces...In order to reduce the pollution of Cl2 and HCl released during extracting vanadium from stone coal by sodium chloride roasting, a modified salt-roasting process was proposed by adding calcined lime in roasting process followed by H2SO4 leaching. The effects of parameters including roasting temperature, roasting time, addition mass ratio of NaCI, calcined lime upon leaching rate of vanadium and curing rate of chlorine were investigated, and the effects of leaching time and leaching temperature on leaching rate of vanadium were also studied. The results show that the vanadium leaching rate and the curing rate of chlorine are 67.3% and 51.5% （mass fraction）, respectively, at roasting temperature of 750℃, roasting time of 4 h, 15% sodium chloride and 8% （mass fraction） calcined lime, leaching temperature of room temperature, and leaching time of 4 h.展开更多
目的建立HPLC同时测定青娥丸中12种指标成分的方法,研究不同炮制品配伍的青娥丸中指标性成分含量变化。方法色谱柱:Purospher~ STAR LPRP-C_(18)endcapped(250 mm×4.6 mm,5μm);流动相:0.1%甲酸水-乙腈梯度洗脱;流速:1.0 m L...目的建立HPLC同时测定青娥丸中12种指标成分的方法,研究不同炮制品配伍的青娥丸中指标性成分含量变化。方法色谱柱:Purospher~ STAR LPRP-C_(18)endcapped(250 mm×4.6 mm,5μm);流动相:0.1%甲酸水-乙腈梯度洗脱;流速:1.0 m L·min^(-1);检测波长:240 nm;进样量:10μL;柱温:30℃。对不同炮制品配伍的青娥丸中指标性成分进行含量测定。结果在上述色谱条件下,青娥丸中12个成分分离度良好,加样回收率范围96.04%~104.07%,RSD均小于2.95%。盐炙品青娥丸中补骨脂素、异补骨脂素、补骨脂定、补骨脂二氢黄酮甲醚、Corlifol A、补骨脂酚、异补骨脂查尔酮7种成分含量明显下降(P<0.05,P<0.01,P<0.001),其他成分无明显变化。结论本研究所建立的方法简单,准确性和稳定性较好,可用于青娥丸的质量控制。盐炙品配伍的青娥丸中补骨脂素、异补骨脂素等成分与生品配伍的青娥丸比较含量明显下降。展开更多
基金Project(2007GH001) supported by Development and Reform Commission of Guizhou Province, China
文摘In order to reduce the pollution of Cl2 and HCl released during extracting vanadium from stone coal by sodium chloride roasting, a modified salt-roasting process was proposed by adding calcined lime in roasting process followed by H2SO4 leaching. The effects of parameters including roasting temperature, roasting time, addition mass ratio of NaCI, calcined lime upon leaching rate of vanadium and curing rate of chlorine were investigated, and the effects of leaching time and leaching temperature on leaching rate of vanadium were also studied. The results show that the vanadium leaching rate and the curing rate of chlorine are 67.3% and 51.5% （mass fraction）, respectively, at roasting temperature of 750℃, roasting time of 4 h, 15% sodium chloride and 8% （mass fraction） calcined lime, leaching temperature of room temperature, and leaching time of 4 h.
文摘目的建立HPLC同时测定青娥丸中12种指标成分的方法,研究不同炮制品配伍的青娥丸中指标性成分含量变化。方法色谱柱:Purospher~ STAR LPRP-C_(18)endcapped(250 mm×4.6 mm,5μm);流动相:0.1%甲酸水-乙腈梯度洗脱;流速:1.0 m L·min^(-1);检测波长:240 nm;进样量:10μL;柱温:30℃。对不同炮制品配伍的青娥丸中指标性成分进行含量测定。结果在上述色谱条件下,青娥丸中12个成分分离度良好,加样回收率范围96.04%~104.07%,RSD均小于2.95%。盐炙品青娥丸中补骨脂素、异补骨脂素、补骨脂定、补骨脂二氢黄酮甲醚、Corlifol A、补骨脂酚、异补骨脂查尔酮7种成分含量明显下降(P<0.05,P<0.01,P<0.001),其他成分无明显变化。结论本研究所建立的方法简单,准确性和稳定性较好,可用于青娥丸的质量控制。盐炙品配伍的青娥丸中补骨脂素、异补骨脂素等成分与生品配伍的青娥丸比较含量明显下降。
