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首页> 外文期刊>Sensors Journal, IEEE >Development of Multi-Parameter Measurement Apparatus for Up-Conversion Phosphor Particles
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Development of Multi-Parameter Measurement Apparatus for Up-Conversion Phosphor Particles

机译：上转换荧光粉颗粒多参数测量装置的研制

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摘要

Up-conversion phosphor (UCP) particles have been used as optical biomarkers in a variety of assay formats. UCP particle properties such as concentration and luminescence are critical for these applications. A multi-parameter measurement apparatus (MPMA) has been designed and constructed to quantify UCP-particle concentration through the scattered light (S), and luminescence properties through fluorescence light (F), respectively. Linearity of S and F can be improved by introducing the transmitted light T over a wide range of concentrations. 38 suspensions at 0.001-2.0 mg/mL have been used to assess the utility of this apparatus for the accumulation of UCP information. The MPMA achieved a detection limit of 0.001 mg/mL and a dynamic range that reached 1.4 mg/mL according to S/T and 2.0 mg/mL according to F/T. The coefficient of variation for ten consecutive tests of the same sample is less than 14% while the measurement error for UCP particle concentration is below 18%. This lower limit of detection, repeatability and accuracy indicate that it is a valuable apparatus for monitoring and controlling the performances of UCP particles during UCP synthesizing as well as surface modification and activation processes.
机译：上转换荧光粉（UCP）颗粒已在多种分析形式中用作光学生物标记。 UCP粒子特性（例如浓度和发光度）对于这些应用至关重要。已经设计并构造了多参数测量设备（MPMA），以分别通过散射光（S）和通过荧光（F）量化UCP颗粒浓度。通过在很宽的浓度范围内引入透射光T，可以改善S和F的线性。 0.001-2.0 mg / mL的38种悬浮液已用于评估该仪器对UCP信息积累的效用。 MPMA的检出限为0.001 mg / mL，动态范围根据S / T达到1.4 mg / mL，根据F / T达到2.0 mg / mL。同一样品的十次连续测试的变异系数小于14％，而UCP颗粒浓度的测量误差小于18％。这种检测，重复性和准确性的下限表明，它是用于在UCP合成以及表面改性和活化过程中监测和控制UCP颗粒性能的有价值的设备。

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