1.1 materials and reagents
Rice (Wuyunjing) Nanjing Yuanwang Selenium-rich Agricultural Products Co., Ltd; GABA Standard, 4-Chloro-3,5-Dinitrotrifluorotoluene Sigma Company; Selenium Standard Solution National Center for Analysis and Testing of Nonferrous Metals and Electronic Materials; Sodium Selenite West Asia Reagent Company; XBridge C18 Reversed-phase Column Waters Company; Acetonitrile, Methanol Company (All of them are chromatographic purity), nitric acid, hydrochloric acid (all of them are high-grade purity), and other chemical reagent companies are analytical pure Guoyao Group.
1.2 instruments and equipment
JLGJ4.5 inspection ridge machine Taizhou Grain Instrument Factory; PQX multi-section programmable artificial climate box Ningbo Southeast Instrument Co., Ltd; 101-
Shanghai Sujin Instrument and Equipment Factory; MCR-3 Microwave Chemical Reactor Xi'an Yuhui Instrument Co., Ltd; FW100 High Speed Universal Pulverizer Tianjin Tester Instrument Co., Ltd; THZ-D Desktop Thermostat Oscillator Taicang Qiangle Experimental Equipment Co., Ltd; TDL-5-A Flying Pigeon Centrifuge Shanghai Antinko Instrument Co., Ltd. Learning instrument factory; Dionex Ultimate
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