农业工程学报2012，Vol.28Issue(4)：258-263,6.DOI:10.3969/j.issn.1002-6819.2012.04.043
衰减全反射-中红外光谱法定量测定小麦粉中的石灰类添加物
Quantitative determination of lime additives in wheat flour by mid-infrared spectroscopy combined with attenuated total reflection
摘要
Abstract
In order to meet the need of on-site quick testing lime in wheat flour, the quantitative calibration models of CaO, Ca(OH)2, CaCO3, CaO+Ca(OH)2 and total lime were developed by using ATR-MIR spectroscopy combined with PLS algorithm, the external validations set were employed to validate the calibration models. The result showed that for the calibration models of CaO, Ca(OH)2, CaCO3, CaO+Ca(OH)2 and total lime, all of the determination coefficients (R2) were larger than 0.98, all of RMSEC (root mean square error of calibration) were less than 0.3, all of RMSECV (root mean square error of cross validation) were less than 0.5, all of the RMSEP (root mean square error of prediction) were less than 0.95, all of the RPD (ratio performance deviation) were more than 4.5, precision of the calibration models were higher and they could meet the needs of on-site quick testing lime in wheat flour. It can provide a reference for the rapid quality security screening of wheat flour, which is important for the quality control of wheat flour in the market. Meanwhile, it also will provide some references to the quantitative determination of other banned additives in wheat flour.关键词
光谱/添加物/石灰类/检测/衰减全反射/中红外/偏最小二乘/小麦粉Key words
spectroscopy/ additives/ lime/ testing/ attenuated total reflection/ mid-infrared/ partial least square/ wheat flour分类
化学化工引用本文复制引用
王冬,王纪华,马智宏,潘立刚,韩平,赵柳..衰减全反射-中红外光谱法定量测定小麦粉中的石灰类添加物[J].农业工程学报,2012,28(4):258-263,6.基金项目
北京市农林科学院博士后基金:北京市科委京产大宗农产品质量安全监测与检测科技支撑工程(Z09090501040901):国家863项目(2010AA10Z201). （Z09090501040901）
