1.武汉大学 化学与分子科学学院,湖北 武汉 430072
2.武汉纺织大学 生物工程与健康学院,湖北 武汉 430200
3.广西电网有限责任公司电力科学研究院,广西电力装备智能控制与运维重点实验室,广西 南宁 530023
何治柯,博士,教授,研究方向:生物传感、微流控分析,E-mail:zhkhe@whu.edu.cn
韩方源,博士,高级工程师,研究方向:分析化学、电力化学,E-mail:han_fy.sy@gx.csg.Cn
纸质出版日期:2024-04-15,
收稿日期:2023-12-27,
修回日期:2024-01-13,
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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(04):532-540.
LIU Ye,YU Dong,LIAO Si-jie,SHEN Ai-guo,HE Zhi-ke,HAN Fang-yuan.Solid Phase Extraction-SERS Technique for Field Analysis of Trace 1,2,3-Benzotriazole in Transformer Oil Based on Lignin- Organoclay Composite Hydrogel[J].Journal of Instrumental Analysis,2024,43(04):532-540.
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(04):532-540. DOI: 10.12452/j.fxcsxb.23122703.
LIU Ye,YU Dong,LIAO Si-jie,SHEN Ai-guo,HE Zhi-ke,HAN Fang-yuan.Solid Phase Extraction-SERS Technique for Field Analysis of Trace 1,2,3-Benzotriazole in Transformer Oil Based on Lignin- Organoclay Composite Hydrogel[J].Journal of Instrumental Analysis,2024,43(04):532-540. DOI: 10.12452/j.fxcsxb.23122703.
该文以脱碱木质素(DAL)和硅藻土(DE)为原料,通过加入2.5%丙烯酸(AA)、0.75%过硫酸铵(APS)和0.25% N’N-亚甲基双丙烯酰胺(MBA),基于自由基聚合法制备了DAL/DE水凝胶。利用高效液相色谱法考察了水凝胶对变压器油中1,2,3-苯并三氮唑(BTA)的吸附性能,随后使用表面增强拉曼散射(SERS)辅以固相萃取技术现场检测了变压器油中的BTA。研究结果表明,在0.6 g DAL/DE水凝胶为固相萃取填料,水为活化剂,BTA变压器油样稀释1倍,洗脱剂为1 mL乙酸的条件下,BTA在776 cm
-1
处的峰强于1 ~ 500 mg/kg范围内与其含量呈良好的线性关系,检出限低至0.28 mg/kg。
Simple and rapid sample pretreatment technology is needed for the surface-enhanced Raman 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 adsorption 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 extraction filler water as activator,and the transformer oil sample of BTA with 1-fold dilution,the eluent 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.
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)
transformer oil1,2,3-benzotriazoleligninhydrogelsolid phase extractionsurface-enhanced Raman spectroscopy
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