以残蝇(FA)为原料制备的活性炭(AC)经CO₂-蒸汽复合活化;气化后用盐酸普鲁卡因(PQ⁺Cl^-)进行物理改性。改性AC作为低成本、高效的固相萃取剂(SPE)用于铬(III&VI)的去除、总含量测定和化学形态分析。在废水。  伪二阶速率方程分配了PQ⁺Cl^-改性AC在水溶液HCl (1.0 mol L^-1)中对铬(VI)的吸附动力学。结果与固相萃取的表面结构有关。dual 铬(VI)作为二元络合离子缔合物的分离机理[PQ⁺]。CrO₃Cl^-]通过“弱碱阴离子交换剂”在改性AC上的作用; and an added component of “surface adsorption” is proposed.  At 2 mL min^-1 flow rate Sorption of spiked chromium(VI) at known concentrations (0.5-20 mg mL^-1) from water onto modified AC packed columns at 2 mL min^-1 was achieved.  The sorbed chromium(VI) species were successfully recovered (106.0±2- 110 ±3%, n=3) from AC packed column with NaOH (10 mL, 1.0 mol L^-1). Chromium(III) after oxidation to chromium(VI) was also enriched  and  eluted from the AC packed column and analyzed.  Modified PQ⁺Cl^- AC packed column was also used for  total determination and speciation of  chromium(III & VI) species at trace levels  in  environmental water samples. Good apparent recovery percentage (94.6±6.3-102.0± 8.5 %) of chromium species was achieved confirming the analytical utility of the modified AC-packed column for removal, total determination and speciation of chromium(III & VI) species in environmental water samples.