文献类型：期刊文献

英文题名：Application of Near Infrared Spectroscopy Coupled with Fluidized Bed Enrichment and Chemometrics to Detect Low Concentration of β-Naphthalenesulfonic Acid

作者：Li, Wei[1,2];Zhang, Xuan[1,2];Zheng, Kaiyi[1,2];Du, Yiping[1,2];Cap, Peng[3];Sui, Tao[3];Geng, Jinpei[3]

机构：[1]E China Univ Sci & Technol, Shanghai Key Lab Funct Mat Chem, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Res Ctr Anal & Test, Shanghai 200237, Peoples R China;[3]Yantai Entry Exit Inspect & Quarantine Bur, Yantai 264000, Peoples R China

年份：2015

卷号：98

期号：1

起止页码：183

外文期刊名：JOURNAL OF AOAC INTERNATIONAL

收录：;EI(收录号：20151900825119);WOS:【SCI-EXPANDED(收录号:WOS:000349593200025)】；

基金：This work was supported by the National Natural Science Foundation of China (20975039) and General Administration of Quality Supervision, Inspection, and Quarantine of the People's Republic of China (2011IK226).

语种：英文

外文关键词：Mean square error - Infrared devices - Least squares approximations - Fluidized beds

摘要：A fluidized bed enrichment technique was developed to improve sensitivity of near infrared (NIR) spectroscopy with features of rapidness and large volume solution. D301 resin was used as an adsorption material to preconcentrate beta-naphthalenesulfonic acid in solutions in a concentration range of 2.0-100.0 mu g/mL, and NIR spectra were measured directly relative to the beta-naphthalenesulfonic acid adsorbed on the material. An improved partial least squares (PLS) model was attained with the aid of multiplicative scatter correction pretreatment and stability competitive adaptive reweighted sampling wavenumber selection method. The root mean square error of cross validation was 1.87 mu g/mL at PLS factor of 7. An independent test set was used to assess the model, with the relative error (RE) in an acceptable range of 0.46 to 10.03% and mean RE of 3.72%. This study confirmed the viability of the proposed method for the measurement of a low content of beta-naphthalenesulfonic acid in water.