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Estándar en el enjuague

Abigail J Crossman1, Laryssa M Sadsarin1, Willis B Jones1

  • 1Department of Chemistry and Biochemistry, University of North Florida, Jacksonville, FL 32224, USA.

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|August 31, 2025
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Resumen
Este resumen es generado por máquina.

El estándar en el enjuague (SIR) es un nuevo método de calibración que simplifica el análisis al eliminar la necesidad de soluciones estándar individuales. Esta técnica utiliza una sola concentración estándar para una cuantificación precisa en una amplia gama de niveles de analito.

Palabras clave:
La automatizaciónCalibraciónFlujo de líquidoNormas internasLos metales

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Área de la Ciencia:

  • Química analítica
  • Análisis instrumental

Sus antecedentes:

  • Los métodos tradicionales de calibración requieren la preparación de múltiples soluciones estándar de concentraciones conocidas.
  • Los efectos de la matriz en las muestras pueden interferir con la cuantificación precisa del analito.

Objetivo del estudio:

  • Introducir y evaluar un nuevo método de calibración llamado Standard in the Rinse (SIR).
  • Demostrar la aplicabilidad del SIR para un análisis químico preciso y eficiente.

Principales métodos:

  • El SIR consiste en enjuagar el instrumento con una solución estándar que contiene todos los analitos después de la introducción de la muestra.
  • Se utilizan dos estándares internos de marca de tiempo para la determinación precisa de la relación.
  • El ICP-OES se utilizó para la prueba de concepto, con potencial para otras técnicas de flujo de líquidos.

Principales resultados:

  • La recuperación del analito osciló entre el 88% y el 120% en las matrices complejas y los materiales de referencia certificados.
  • Las desviaciones estándar relativas fueron consistentemente bajas, del orden de unos pocos por ciento.
  • El método alcanzó límites de detección en el rango bajo de μg L-1 y analitos cuantificados en cuatro órdenes de magnitud.

Conclusiones:

  • SIR evita efectivamente la necesidad de las curvas de calibración multipunto tradicionales.
  • El método corrige los efectos de la matriz sin requerir estándares compatibles con la matriz.
  • SIR ofrece una estrategia de calibración simplificada, precisa y sólida para diversas técnicas analíticas.