高效液相色谱法测定食(饮)具中直链烷基苯磺酸钠残留量的研究  

Determination of LAS Residues in Tableware by HPLC

作　　者：吕保樱[1,2] 莫招育 石相莉 梁炜 

机构地区：[1]广西科技大学,广西柳州545002 [2]桂林市产品质量检验所,广西桂林541004 [3]广西壮族自治区环境保护科学研究院,广西南宁530022

出　　处：《环境科学导刊》2016年第1期108-110,共3页Environmental Science Survey

基　　金：国家质检总局计划项目(No.2012QK095);广西自然科学基金项目(桂科自0992008-9)

摘　　要：本研究基于高效液相色谱法建立了一种准确、快速检测食(饮)具中直链烷基苯磺酸钠(LAS)残留量的方法。样品经提取、浓缩后用高效液相色谱法进行测定。液相色谱条件优化为:色谱柱:菲罗门C8(4.6mm×250mm×5μm);流动相体积比:甲醇∶乙酸铵(称取乙酸铵1.54g,用水溶解并定容至1000m L,再用氨水,调节至pH=9)=77∶23;流速:0.8m L/min;柱温:30℃;进样量:20μL;检测波长:220nm。并对方法的准确度、精密度和实际样品进行测定,结果均令人满意。结果表明,高效液相色谱法(HPLC)方法简单,准确度高,在实际测定中有广泛的应用前景。A method was developed for the determination of LAS residues in tableware by HPLC. Samples were extracted, concentrated and determined by HPLC. The final analytical conditions were as follows ： C8 column （4. 6mm ×250mm×5μm ）, the ratio of methanol and ammonium acetate （ammonium acetate weighed 1.54g, dissolved in water and dilute to 1000mL, then ammonia, adjusted to pH = 9） was 77：23, flow rate as 0.8mL / min, column temperature as 30℃, injection volume as 20μL, detection wavelength as 220nm. The accuracy, precision and actual samples of the method were measured. The results showed that high - performance liquid chromatography （HPLC） method was simple, accurate with a wide range of applications in actual measurement.

关 键 词：直链烷基苯磺酸钠 高效液相色谱法 检测方法 食饮具 残留量 

分 类 号：X83[环境科学与工程—环境工程]