设计了一种基于双通道水平剪切声表面波(SH-SAW)传感器的新型液相分析仪器,该分析仪器以数字信号处理芯片(DSP)TM S320VC 5402为微处理器,在复杂可编程逻辑器件(CPLD)EPM 7128S的基础上开发了相应的专用接口电路。系统采用流动注射分析(...设计了一种基于双通道水平剪切声表面波(SH-SAW)传感器的新型液相分析仪器,该分析仪器以数字信号处理芯片(DSP)TM S320VC 5402为微处理器,在复杂可编程逻辑器件(CPLD)EPM 7128S的基础上开发了相应的专用接口电路。系统采用流动注射分析(F IA)技术,实现各种溶液的物理特性参数的全自动分析检测。此外,通过基于PD IU SBD 12器件的U SB总线(U n iversa l Seria l Bus)的接口,分析仪器可方便地与计算机进行通讯。实验表明该分析仪器能有效地检测溶液的总盐度、白酒酒精度以及有机溶液中的水质量分数等参数指标。仪器具有灵敏度高、重复性好、检测速度快、体积小以及便携等特点,在工业生产和环境现场实时监测中有良好的应用前景。展开更多
Aim The several species of the genus Paris called "Chonglou" are famous traditional Chinese herbal medicines. We established the quantitative analysis method of the steroidal saponins in some species of the genus Pa...Aim The several species of the genus Paris called "Chonglou" are famous traditional Chinese herbal medicines. We established the quantitative analysis method of the steroidal saponins in some species of the genus Paris and discussed their relations. Methods We detected the contents of 11 steroidal saponins in Paris samples with a Kromasel C18 ( 150 mm× 4.6 mm ID, 5μm) column which was subjected to gradient elution with acetonitrile-water (30:70- 60:40, V/V) at a flow rate of 1 mL· min^-1 by HPLC-ELSD and established chemical cluster tree using SPSS 11 software. Results All the samples could be separated and calibration curves of 11 saponins were prepared. We successfully detected the contents of 11 steroidal saponins in 14 Paris spp. in 30 min. The recovery for the assay of saponins was between 95 % and 97 %. The RSD of precision of 11 saponins and stability of samples were below 3 %. Chemical phylogenetic tree based on saponin contents indicated that 17 samples of Paris spp. clustered separately. Conclusion The established method is accurate and convenient, and suitable for the quantitative analysis of these 11 steroidal saponins in Paris spp.. The chemical phylogenetic tree is in accordance with Takhtajian classical taxonomy.展开更多
文摘设计了一种基于双通道水平剪切声表面波(SH-SAW)传感器的新型液相分析仪器,该分析仪器以数字信号处理芯片(DSP)TM S320VC 5402为微处理器,在复杂可编程逻辑器件(CPLD)EPM 7128S的基础上开发了相应的专用接口电路。系统采用流动注射分析(F IA)技术,实现各种溶液的物理特性参数的全自动分析检测。此外,通过基于PD IU SBD 12器件的U SB总线(U n iversa l Seria l Bus)的接口,分析仪器可方便地与计算机进行通讯。实验表明该分析仪器能有效地检测溶液的总盐度、白酒酒精度以及有机溶液中的水质量分数等参数指标。仪器具有灵敏度高、重复性好、检测速度快、体积小以及便携等特点,在工业生产和环境现场实时监测中有良好的应用前景。
文摘Aim The several species of the genus Paris called "Chonglou" are famous traditional Chinese herbal medicines. We established the quantitative analysis method of the steroidal saponins in some species of the genus Paris and discussed their relations. Methods We detected the contents of 11 steroidal saponins in Paris samples with a Kromasel C18 ( 150 mm× 4.6 mm ID, 5μm) column which was subjected to gradient elution with acetonitrile-water (30:70- 60:40, V/V) at a flow rate of 1 mL· min^-1 by HPLC-ELSD and established chemical cluster tree using SPSS 11 software. Results All the samples could be separated and calibration curves of 11 saponins were prepared. We successfully detected the contents of 11 steroidal saponins in 14 Paris spp. in 30 min. The recovery for the assay of saponins was between 95 % and 97 %. The RSD of precision of 11 saponins and stability of samples were below 3 %. Chemical phylogenetic tree based on saponin contents indicated that 17 samples of Paris spp. clustered separately. Conclusion The established method is accurate and convenient, and suitable for the quantitative analysis of these 11 steroidal saponins in Paris spp.. The chemical phylogenetic tree is in accordance with Takhtajian classical taxonomy.