摘要
根据乙醇汽油中乙醇含量不同时介电特性也不同的特点,提出一种快速测定乙醇汽油中乙醇含量的介电谱新方法。对配制的22个样品的介电谱进行了分析,对预测乙醇含量的不同数学模型做了比较。结果表明,用偏最小二乘法建立模型能实现对22个样品的准确预测,绝大多数结果能够满足国家标准方法对误差的要求,说明介电谱技术可以应用于现场快速检测乙醇汽油中的乙醇含量。
Based on the characteristic that ethanol gasolines with different content of ethanol have different dielectric properties, a new dielectric spectroscopic method is proposed for detecting ethanol content in ethanol gasoline. The dielectric spectra of 22 samples are analysed and different mathematical models for predicating ethanol content are compared. The results show that the partial least square method can accurately predict the ethanol contents in 22 samples and can meet the requirement of national standard on errors. The dielectric spectroscopic technology can be used for in-situ rapid detection of ethonal content in ethanol gasoline.
出处
《分析仪器》
CAS
2009年第1期11-14,共4页
Analytical Instrumentation
