活性炭(AC)由残蝇(FA)制备而成。(PQ⁺Cl^-)采用改性活性炭作为低成本、高效的固相萃取剂，对三价铬(iii & VI)进行了去除、总含量测定和化学形态分析。在废水。在此基础上，提出了拟二阶速率方程。用PQ⁺Cl^--修饰AC确定了cr (VI)在1.0 mol L^-1水溶液中的吸附动力学。数据与SPE的表面结构相关。dual 铬(VI)作为二元络合离子缔合物[PQ⁺]的分离机理。CrO₃Cl^-] in/on the modified AC via " 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.