Key Laboratory of Analytical Chemistry of the State Ethnic Affairs Commission, School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, China.
School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, China.
J Environ Sci (China). 2024 Mar;137:703-715. doi: 10.1016/j.jes.2023.03.023. Epub 2023 Mar 25.
Perfluorinated compounds (PFCs) are toxic and widely present in the environment, and therefore effective adsorbents are required to remove PFCs from environmental water. In the present study, a new type of fluorinated biomass materials was synthesized via an ingenious fluorosilanization reaction. These adsorbents were applied for the adsorption of 13 typical PFCs, including perfluorocarboxylic acids (PFCAs) and perfluorosulfonic acids (PFSAs). By comparing their adsorption performance, Fluorinated cedar slag (FCS) was discovered to have the best absorption efficiency and enabled highly efficient enrichment of PFCs. The adsorption recovery of FCS with the investigated PFCs is greater than 90% under the optimal adsorption condition. Ascribed to the high affinity of F-F sorbent-sorbate interaction, FCS had good adsorption capacities of PFCs from aqueous solution, with the maximum adsorption capacity of 15.80 mg/g for PFOS and 10.71 mg/g for PFOA, respectively. Moreover, the adsorption time could be achieved in a short time (8 min). Using the FCS absorbent, an innovative FCS-solid phase extraction assisted with high performance liquid chromatography-electrospray-tandem mass spectrometry (FCS-SPE-HPLC-ESI-MS/MS) method was first developed to sensitively detect PFCs in the environmental water samples. The intra-day and inter-day recovery rates of the 13 compounds ranged from 90.7%-104.3%, with the RSD of 2.1%-4.7% (intra-day) and 2.5%-8.5% (inter-day), respectively. This research demonstrates the potential of the newly fluoro-functionalized plant biomass to adsorb PFCs from environmental water, with the advantages of high adsorption efficiencies, high anti-interference, easy operation and low economic cost.
全氟化合物（PFCs）具有毒性且广泛存在于环境中，因此需要有效的吸附剂来从环境水中去除 PFCs。在本研究中，通过巧妙的氟硅烷化反应合成了一种新型的氟化生物质材料。这些吸附剂被应用于 13 种典型的 PFCs（包括全氟羧酸（PFCAs）和全氟磺酸（PFSAs））的吸附。通过比较它们的吸附性能，发现氟化雪松渣（FCS）具有最佳的吸收效率，并能够高效富集 PFCs。在最佳吸附条件下，FCS 对所研究的 PFCs 的吸附回收率大于 90%。由于 F-F 配体-吸附质相互作用的高亲和力，FCS 对水溶液中的 PFCs 具有良好的吸附能力，对 PFOS 和 PFOA 的最大吸附容量分别为 15.80 mg/g 和 10.71 mg/g。此外，吸附时间可以在短时间内（8 分钟）完成。使用 FCS 吸附剂，首次开发了一种创新的 FCS-固相萃取辅助高效液相色谱-电喷雾串联质谱（FCS-SPE-HPLC-ESI-MS/MS）方法，用于灵敏检测环境水样中的 PFCs。13 种化合物的日内和日间回收率范围为 90.7%-104.3%，相对标准偏差（RSD）分别为 2.1%-4.7%（日内）和 2.5%-8.5%（日间）。本研究证明了新的氟功能化植物生物质从环境水中吸附 PFCs 的潜力，具有高吸附效率、高抗干扰性、操作简单和低成本的优点。
