分析测试学报2024，Vol.43Issue(4)：532-540,9.DOI:10.12452/j.fxcsxb.23122703
基于木质素-有机黏土复合水凝胶的固相萃取-SERS联用技术用于变压器油中微量1,2,3-苯并三氮唑的现场分析
Solid Phase Extraction-SERS Technique for Field Analysis of Trace 1,2,3-Benzotriazole in Transformer Oil Based on Lignin-Organoclay Composite Hydrogel
摘要
Abstract
Simple and rapid sample pretreatment technology is needed for the surface-enhanced Ra-man scattering(SERS)detection of trace organic components in transformer oil.In this paper,the dealkaline lignin/diatomite(DAL/DE)hydrogel was prepared by free radical polymerization using dealkaline lignin(DAL)and diatomite(DE)as raw materials,adding 2.5%acrylic acid(AA),0.75%ammonium persulphate(APS)and 0.25%N'N-methylene bisacrylamide(MBA).The adsorp-tion propertiesof hydrogel to 1,2,3-benzotriazole(BTA)in transformer oil were investigated by high-performance liquid chromatography.Then SERS combined with solid phase extraction was used to detect BTA in transformer oil.The results showed that 0.6 g DAL/DE hydrogel as solid phase ex-traction filler water as activator,and the transformer oil sample of BTA with 1-fold dilution,the elu-ent was 1 mL acetic acid.In the content range of 1-500 mg/kg BTA,the peak strength at 776 cm-1 shows a good linear relationship with the content of BTA,and the detection limit was as low as 0.28 mg/kg.关键词
变压器油/1,2,3-苯并三氮唑/木质素/水凝胶/固相萃取/表面增强拉曼散射(SERS)Key words
transformer oil/1,2,3-benzotriazole/lignin/hydrogel/solid phase extraction/surface-enhanced Raman spectroscopy分类
化学化工引用本文复制引用
刘叶,余东,廖思杰,沈爱国,何治柯,韩方源..基于木质素-有机黏土复合水凝胶的固相萃取-SERS联用技术用于变压器油中微量1,2,3-苯并三氮唑的现场分析[J].分析测试学报,2024,43(4):532-540,9.基金项目
国家自然科学基金项目(22074109,21874102,21775114) （22074109,21874102,21775114）
