Breakthrough in Engineering: New Method for Simultaneous Extraction and Quantification of Chlorophenols in Leather Matrices

Strategic Insights -

Researchers from the Qilu University of Technology (Shandong Academy of Sciences) have made a significant discovery in the field of engineering, developing a novel method for the simultaneous extraction and quantification of chlorophenols in leather matrices. The new method, which combines multi-template molecularly imprinted materials (mt-MIPs) with high-performance liquid chromatography (HPLC), has been shown to have high sensitivity, high enrichment factor, and negligible matrix interference.

Key Takeaways:

  • The developed method uses mt-MIPs as a micro-solid phase extraction (m-SPE) device, which is coupled with HPLC for the simultaneous extraction and quantification of five typical chlorophenols (CPs) in leather matrices.
  • The method has been optimized for various parameters, including the type of membrane, amount of adsorbent, type and volume of desorption solvent, desorption time, and salt effect.
  • The established mt-MIPs-m-SPE-HPLC method has demonstrated satisfactory linearity, high sensitivity with LODs of 0.17-0.52 g L, and high enrichment factor (70.6-144).
  • The method has been successfully applied to the analysis of five CPs in tannery wastewater, finished leather, and wet blue samples, with spike recoveries ranging from 73.00 %-115.2 % and RSDs of 0.28 %-11.4 %.
  • The developed method has proven to be viable for the simultaneous extraction and quantification of trace CPs in complex leather matrices.

Statistics:

  • Adsorption capacity of the mt-MIPs: 39.15-71.43 mg g
  • Mass transfer rate of the mt-MIPs: within 30 min
  • Chromatographic linearity of the established method: 2.0-200 g L
  • LODs of the established method: 0.17-0.52 g L
  • Enrichment factor of the established method: 70.6-144
  • Spike recoveries: 73.00 %-115.2 %
  • RSDs of the established method: 0.28 %-11.4 %

Sources:

  • Membrane protected multi-template molecularly imprinted polymer based micro-solid phase extraction coupled with high performance liquid chromatography for analysis of chlorophenols. Journal of Chromatography A, 2025;1753:465981. (Elsevier, Radarweg 29, 1043 Nx Amsterdam, Netherlands)
  • NewsRx. Qilu University of Technology (Shandong Academy of Sciences) Reports Findings in Engineering (Membrane protected multi-template molecularly imprinted polymer based micro-solid phase extraction coupled with high performance liquid chromatography ...). Journal of Engineering. May 12, 2025; p 2423.