摘要
建立了水中4种直链烷基苯磺酸钠的固相萃取／高效液相色谱的测定方法。样品经高速冷冻离心，用MAX复合阴离子交换小柱净化富集后直接进样。在以乙腈-100mmol／L乙酸铵（体积比73：27）为流动相，流速1mL／min，柱温30℃，检测波长225nm，进样体积10灿的条件下，4种直链烷基苯磺酸钠得到很好的分离。在优化实验条件下，十一烷基苯磺酸钠与十三烷基苯磺酸钠的线性范围为10～50mg／L，检出限为10mg／L，十二烷基苯磺酸钠与十四烷基苯磺酸钠的线性范围为5～25mg／L，检出限为5mg／L；加标回收率为86％～98％；相对标准偏差为2．9％～7．4％。
A solid phase extraction coupled with high performance liquid chromatographic （SPE/ HPLC） method was established for the determination of 4 kinds of sodium n-alkyl benzene sulfonates in water. The samples were refrigerated and centrifuged, then purified and enriched with MAX com- plex anion exchange column. Four sodium n-alkyl benzene sulfonates were successfully separated by HPLC using acetonitrile- 100 mmoL/L ammonium acetate （73 ： 27, by volume） as mobile phase with a flow rate of 1 mL/min, column temperature of 30℃, detection wavelength of 225 nm and injection volume of 10 μL. Under the optimal conditions, the calibration curves were linear in the range of 10 -50 mg/L for sodium undecylbenzene snlfonte and sodium N-tridecylbenzene sulfonate with detection limits of 10mag/L, and 5 - 25 mg/L for sodium dodecylbenzene sulphonate and sodium tetradecylbenzene sulfonate with detection limits of 5 mg/L. The spiked recoveries were in the range of 86% - 98% with relative standard deviations（RSDs） of 2.9% - 7.4% .
出处
《分析测试学报》
CAS
CSCD
北大核心
2011年第1期95-98,共4页
Journal of Instrumental Analysis
关键词
高效液相色谱
固相萃取
直链烷基苯磺酸钠
high performance liquid chromatography
solid-phase extraction
alkyl benzene sulfonate
