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Forensic examination of hair is commonly performed to trace down its origin and make a connection between a suspect and a crime scene. Such examination is based on subjective microscopic analysis of hair. During the last decade, several spectroscopic approaches have been proposed to make forensic analysis of hair more robust and reliable. Surface-enhanced Raman and attenuated total internal reflection Infrared spectroscopies allowed for detection and identification of dyes directly on hair and e...
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Biosilica-based adsorbent prepared from rice husk, sequentially modified with polymeric Polyamines and Carboxyarsenazo was proposed for the preconcentration of 13 lanthanides, La, Sc, and Y. It is shown that the proposed adsorbent quantitatively extracted rare earth elements (REE) from solutions with pH 3.5-6.5. Carrying out adsorption at pH 3.5-4.5 allows the quantitative separation of rare earth elements from accompanying ions of non-ferrous, alkaline and alkaline-earth metals. A procedure for...
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#1Yinchao HeH-Index: 1
#2Hui JiangH-Index: 10
Last. Quansheng ChenH-Index: 34
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The actual storage period of edible oil is one of the important indicators of edible oil quality. A high-precision identification method based on near-infrared (NIR) spectroscopy technique for the actual storage period of edible oil was proposed in this study. Firstly, Fourier transform NIR (FT-NIR) spectrometer was used to collect NIR spectra of edible oil samples in different storage periods, and the obtained spectra were pretreated by standard normal transformation (SNV). Then, the characteri...
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Analytical chemistry
Detection limit
Mass spectrometry
High-performance liquid chromatography
Chemistry
Chromatography
Fluorescence