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Sorbente inteligente a base de celulosa para extracción en fase sólida de anfetamina impulsada por luz

Yuhong Xie1, Rui Zhang1, Yifan Liu1

  • 1College of Environment & Safety Engineering, Fuzhou University, Fuzhou, Fujian 350108, China.

Langmuir : the ACS journal of surfaces and colloids
|February 27, 2026
PubMed
Resumen
Este resumen es generado por máquina.

Un novedoso sorbente a base de celulosa (Cell-Azo) permite la extracción en fase sólida de anfetamina (AMP) controlada por luz. Este material inteligente ofrece un análisis de AMP en trazas eficiente, ecológico y controlable en muestras complejas como la orina.

Palabras clave:
celulosaanfetaminaextracción en fase sólidamateriales inteligentesfotocontrolcromatografía líquida de alta resolución

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Área de la Ciencia:

  • Ciencia de Materiales
  • Química Analítica
  • Química de Polímeros

Sus antecedentes:

  • El desarrollo de materiales sorbentes selectivos y eficientes es crucial para la extracción de analitos en trazas.
  • Los materiales sensibles a la luz ofrecen mecanismos novedosos para la captura y liberación controladas.
  • Los métodos existentes para el análisis de anfetaminas pueden ser complejos y consumir mucho tiempo.

Objetivo del estudio:

  • Desarrollar un sorbente a base de celulosa sensible a la luz (Cell-Azo) para la extracción en fase sólida de anfetamina (AMP).
  • Investigar las características de adsorción y desorción inducida por luz de Cell-Azo.
  • Establecer un método analítico sensible para la detección de AMP en trazas en matrices complejas.

Principales métodos:

  • Injerto de azobenceno en celulosa mediante polimerización radicalaria por transferencia de átomo para crear Cell-Azo.
  • Caracterización mediante espectroscopía FT-IR, XPS y UV-vis.
  • Estudios de adsorción en lotes y desarrollo de un protocolo de extracción en fase sólida dispersiva (d-SPE) acoplado a HPLC-UV.

Principales resultados:

  • Cell-Azo demostró un injerto exitoso e isomerización reversible inducida por luz.
  • La capacidad máxima de adsorción fue de 19,86 mg·g⁻¹ a pH 9,0.
  • La luz UV desencadenó la liberación de AMP con una eficiencia de desorción del 90,54%, significativamente mayor que en la oscuridad.
  • El método d-SPE-HPLC-UV mostró una amplia linealidad, bajo LOD (7 μg·L⁻¹) y buena precisión.
  • Las recuperaciones en muestras de orina fortificadas variaron del 69,53% al 75,68%.

Conclusiones:

  • Cell-Azo es un sorbente inteligente eficaz para la extracción en fase sólida de AMP impulsada por luz.
  • El mecanismo de liberación controlada por luz ofrece una ventaja significativa sobre los métodos convencionales.
  • Cell-Azo presenta una alternativa prometedora, ecológica y controlable para el análisis de AMP en trazas en muestras biológicas complejas.