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采用β-环糊精诱导十二烷基苯磺酸钠(SDBS)/聚丙烯酰胺(HPAM)复配体系,通过产生的激发光谱信号检测该复配体系中SDBS和HPAM的含量。考察了β-环糊精对SDBS与HPAM的诱导作用、SDBS与HPAM之间的干扰影响、溴水氧化HPAM时间、甲酸钠还原溴水时间等因素对二元复配体系定量的影响。结果表明,SDBS的最大诱导吸收波长为225 nm,溴水氧化HPAM的最佳时间为10 min,甲酸钠还原过量溴水的最佳时间为5～10 min。在水溶液体系中β-环糊精兼具显著提高复配体系中SDBS和HPAM的检测精度和定量抗干扰的作用,该方法的定量误差在2.0%以内。
Β-Cyclodextrin (SDBS) / polyacrylamide (HPAM) complex system was induced by β-cyclodextrin, and the content of SDBS and HPAM in the complex system was detected by the generated excitation spectrum signal. The effects of β-cyclodextrin on the induction of SDBS and HPAM, the interference between SDBS and HPAM, the HPAM time of brominated water oxidation and the time of sodium bromide reduction of bromine water were investigated. The results showed that the maximum absorption wavelength of SDBS was 225 nm, the optimum time for oxidizing HPAM with bromine water was 10 min, and the optimal time for sodium formate to reduce excess bromine water was 5 ~ 10 min. Β-Cyclodextrin can significantly improve the detection accuracy and quantitative anti-interference of SDBS and HPAM in the complex system. The quantitative error of this method is within 2.0%.