Variation analysis in spectral indices of volatile chlorpyrifos and non-volatile imidacloprid in jujube (Ziziphus jujuba Mill.) using near-infrared hyperspectral imaging (NIR-HSI) and gas chromatograph-mass spectrometry (GC-MS). - Wen-Hao Su; Da-Wen Sun; Jianguo He; Ling-Biao Zhang (Comput. Electron. Agric., 2017)