A simple device for quantitative colorimetric diffuse reflectance measurements
A simple device for quantitative colorimetric diffuse reflectance measurements
复制标题
一种用于定量比色漫反射测量的简单装置
DOI：
10.1016/s0925-4005(02)00309-x
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
M. Tubino
中科院分区：
文献类型：
--
作者：
Francisco Matias;M. Vila;M. Tubino
本文介绍了一种用于比色漫反射测量的非常简单和低成本的反射计。该仪器采用光敏电阻（LDR）作为传感器，发光二极管（LED）作为光源。将该装置的性能与商业仪器的性能进行比较，测量Pantone®Process Black Uncoated色卡的反射率。还使用丁二酮肟作为比色试剂对催化剂中的镍进行定量分析来测试该装置。精密度约为6%（R.S.D.）。通过统计学Student t检验程序，将这些结果与使用相同反应的重量法获得的结果进行比较。观察到完全一致。所有获得的结果的良好质量允许漫反射测量，包括定量分析程序的仪器的建议。
A very simple and low cost reflectometer, for colorimetric diffuse reflectance measurements is described. The proposed instrument uses a light dependent resistor (LDR), as a sensor, and a light emitter diode (LED), as light source. The performance of the device was compared with that of a commercial instrument, measuring the reflectance of the Pantone®Process Black Uncoated Palette. The quantitative analysis of nickel, in a catalyst, using dimethylglyoxime as colorimetric reagent, was also used to test the device. The observed precision was about 6% (R.S.D.). These results were compared with those obtained by the gravimetric method using the same reaction, through the statistical Student’s t-test procedure. A complete agreement was observed. The good quality of all the obtained results allows the recommendation of the instrument for diffuse reflectance measurements including quantitative analytical procedures.