在pH = 5缓冲溶液条件下，对仅有Co²⁺、仅有Ni²⁺、Co²⁺与Ni²⁺混合三种情况下Co²⁺的萃取率进行了探究。结果显示单独萃取Co²⁺时萃取率高达75.47%；然而对于混合溶液，萃取率较单独萃取Co²⁺明显下降。通过系列对比实验发现Ni²⁺的存在对Co²⁺的分光光度测量造成了干扰。因此，在综合性实验中我们利用分光光度法针对Co²⁺的萃取率进行分析，以及对可能影响萃取率的因素——pH、萃取时间、萃取次数进行了探究，寻找最佳实验条件，提高萃取率。

Herein, a layered chiral coordination polymer, [Cd₂(D-cam)₂(2, 2'-bipy)₂]_n (Cd-CP), was synthesized using a solvothermal method with camphoric acid (D-H₂cam), 2, 2'-bipyridine (2, 2'-bipy) and Cd²⁺, and Tb³⁺@Cd-CP was in-situ synthesized introducing Tb³⁺ ions. The fluorescence experiments revealed that compared to Cd-CP, Tb³⁺@Cd-CP exhibited ultra-high fluorescence performance. The luminescence sensing performance demonstrated that Tb³⁺@Cd-CP could distinguish R/S-propylene glycol (R/S-PG) by fluorescence responses, with fluorescence quenching constant of 5.3×10³ and 2.0×10³ L·mol^-1 respectively and the enantioselectivity factor (α) of 2.65. Moreover, Tb³⁺@Cd-CP demonstrated limits of detection of 9.3 and 19.0 μmol·L^-1 for R-PG and S-PG, respectively, and showed good reproducibility.