T/GXAS 346-2022 Determination of selenium forms in peanuts using high performance liquid chromatography-inductively coupled plasma mass spectrometry
T/GXAS 346-2022 Determination of selenium forms in peanuts using high performance liquid chromatography-inductively coupled plasma mass spectrometry
Basic Information
Scope
Scope: This document describes the principles, reagents and materials, instruments and equipment, sample preparation, analytical procedures, result calculation, and precision for the determination of selenium forms in peanuts by high-performance liquid chromatography-inductively coupled plasma mass spectrometry (HPLC-ICP-MS). This document is applicable to the determination of five selenium forms in peanuts, including selenomethionine, L-selenocysteine, methylselenocysteine, sodium selenate, and sodium selenite. The detection limits for selenomethionine, L-selenocysteine, and methylselenocysteine are 0.001 mg/kg, and the detection limits for sodium selenate and sodium selenite are 0.002 mg/kg (calculated as Se). Main technical content: This document describes the principles, reagents and materials, instruments and equipment, sample preparation, analytical procedures, result calculation, and precision for the determination of selenium forms in peanuts by HPLC-ICP-MS. This document is applicable to the determination of five selenium forms in peanuts, including selenomethionine, L-selenocysteine, methylselenocysteine, sodium selenate, and sodium selenite. The detection limits for selenomethionine, L-selenocysteine, and methylselenocysteine are 0.001 mg/kg, and the detection limits for sodium selenate and sodium selenite are 0.002 mg/kg (calculated as Se).