摘要
本文研究了废水中痕量硝基酚类的高效液相色谱分离、测定方法。在碱性条件下,硝基酚类的最大吸收波长移向360～420hm范围内,以λ=395nm作的检测波长进行测定,提高了分析方法的灵敏度和选择性。同时,研究了不同流动相、检温等因素对分离的影响,确定了最佳流动相组成。样品分析采取直接水溶液进样法简化了预处理步骤。检测下限达10^(-10)g/m1。
A HPLC method for direct determination of priority pollutant nitrophenols in wastewater at ppb level. λ_(max) of nitrophenols are shifted from ultraviolet to violet in basic solution. In this method measurements are carried out at 395 nm. In this wavelength the rate is practically no interference problems, and highly specific determination of nitrophenols at low concentrations is possible. A RP ion-pair HPLC system with phosphate huffer (pH = 8.0) as ion-pairing agent was found to give good resolution of nitrophenols.
出处
《重庆环境科学》
1991年第1期43-46,48,共4页
Chongqing Environmental Science
