In order to prevent drunk driving timely and protect personal safety,a kind of vehicle-loaded alcohol concentration detector based on single chip microcomputer control is designed.The detector usesAT89C51 microcontrol...In order to prevent drunk driving timely and protect personal safety,a kind of vehicle-loaded alcohol concentration detector based on single chip microcomputer control is designed.The detector usesAT89C51 microcontroller as the core,makes use of the gas sensor,A/D converter to detect the alcohol concentration of the breath of the driver,can set different thresholds according to the space of the car model,automatically cut off the ignition circuit for the exceeded threshold,and has the sound and light alarm function,which fundamentally solve the problem of drunk driving.The instrument is compact in size,stable in performance,convenient in installation and debugging,and of practical significance.展开更多
目的建立气相色谱法测定白酒中醇类和酯类的分析方法。方法样品前期处理简单,以叔戊醇为内标物,进行内标法标准曲线定量,采用FID氢火焰离子化检测器和毛细管色谱柱DB-FFAP(50m×0.32 mm, 0.50μm)及程序升温进行测定,检测器温度为30...目的建立气相色谱法测定白酒中醇类和酯类的分析方法。方法样品前期处理简单,以叔戊醇为内标物,进行内标法标准曲线定量,采用FID氢火焰离子化检测器和毛细管色谱柱DB-FFAP(50m×0.32 mm, 0.50μm)及程序升温进行测定,检测器温度为300℃,进样口温度230℃,进样量0.5μL。结果各醇类及酯类混合标准溶液在相应的浓度范围内线性皆良好,相关系数r均大于0.999,检出限为3~9mg/L(S/N=3),定量限为10~30 mg/L (S/N=10),回收率为88.25%~98.75%,相对标准偏差(relative standard deviation,RSD)为2.75%~3.84%(n=6)。结论该方法简化了操作步骤,一次进样可以同时检测8种常规的醇类和酯类,提高工作效率和仪器的利用率,且回收率高,重现性和精密度良好,测定结果准确可靠,满足白酒中醇类和酯类含量的定量分析。展开更多
基金This work was supported by the youth backbone teachers training program of Henan colleges and universities under Grant No.2016ggjs-287the project of science and technology of Henan province under Grant No.172102210124the Key Scientific Research projects in Colleges and Universities in Henan Grant No.18B460003.
文摘In order to prevent drunk driving timely and protect personal safety,a kind of vehicle-loaded alcohol concentration detector based on single chip microcomputer control is designed.The detector usesAT89C51 microcontroller as the core,makes use of the gas sensor,A/D converter to detect the alcohol concentration of the breath of the driver,can set different thresholds according to the space of the car model,automatically cut off the ignition circuit for the exceeded threshold,and has the sound and light alarm function,which fundamentally solve the problem of drunk driving.The instrument is compact in size,stable in performance,convenient in installation and debugging,and of practical significance.
文摘目的建立气相色谱法测定白酒中醇类和酯类的分析方法。方法样品前期处理简单,以叔戊醇为内标物,进行内标法标准曲线定量,采用FID氢火焰离子化检测器和毛细管色谱柱DB-FFAP(50m×0.32 mm, 0.50μm)及程序升温进行测定,检测器温度为300℃,进样口温度230℃,进样量0.5μL。结果各醇类及酯类混合标准溶液在相应的浓度范围内线性皆良好,相关系数r均大于0.999,检出限为3~9mg/L(S/N=3),定量限为10~30 mg/L (S/N=10),回收率为88.25%~98.75%,相对标准偏差(relative standard deviation,RSD)为2.75%~3.84%(n=6)。结论该方法简化了操作步骤,一次进样可以同时检测8种常规的醇类和酯类,提高工作效率和仪器的利用率,且回收率高,重现性和精密度良好,测定结果准确可靠,满足白酒中醇类和酯类含量的定量分析。
