摘要
提出了用多壁碳纳米管(MWCNT's)作吸附All的固相萃取法(SPE)富集水样中残留的三唑酮,并用高效液相色谱法测定其含量。取一定体积的水样以4 mL·min^(-1)流量通过用MWCNT's填充的SPE柱,用二氛甲烷作洗脱剂洗脱吸附在柱上的三唑酮。洗脱液用氮吹蒸干后溶于1.0ml.甲醇-水(70+30)混合液中,用C_(18)色谱柱作固定相,用甲醇-水(70+30)混合液作流动相进行分离,在波长225 nm处进行紫外检测。三吹酮的质童浓度在1.0-50.0μg·L^(-1)范围内与其峰面积呈线性关系,方法的检出限(3S/N)为0.3μg·L^(-1)。在2个浓度水平上对方法做回收试验,测得回收率在95.0%~104%之间。
Multiwall carbon nano bubes （MWCNT＇s） was used as adsorbent in the solid phase extraction （SPE） for enrichment of residual triadimefon in water sample, and the enriched analyte was deterrnined by HPLC. A definite volume of water sample was taken and passed through SEE column packed with MWCN＇T＇s at a flow-rate of 4 mL · min-1. Dichloromethane was used as eluant to desorb triadimefon from the colunm, and the eluate obtained was evaporate to dryness by Ne-blowing. The residue was dissolved and made up to 1. 0 mL. with the mobile phase. Chromatographic separation was made by using C18-column as stationary phase and mixture of CH3OH-H2O （70＋30） as mobile phase. Linear relationship between values of peak area and mass concentration of triadimefon was obtained in the range of 1. 0-50. 0 μg · L-1, with detection limit （3S/N） of 0. 3μg L1 Recovery was tested at 2 concentration levels, giving results of recovery ranged from 95.0% to 104%.
出处
《理化检验（化学分册）》
CAS
CSCD
北大核心
2013年第9期1038-1041,共4页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
基金
国家自然科学基金项目(21107022)
河南师范大学青年骨干教师资助项目(2010)
