This paper presents a method for measuring the moisture content in mineral ore samples using near-infrared diffuse reflectance spectroscopy. It was found that there is a linear relationship between the amount of water absorbed and the non-bonded -OH band at 1900 nm, while no trends were observed for -OH bands at 1400 and 2200 nm. This study is of significant importance for the development of viable methods for extracting, analyzing, and processing oil shale.
This document details a study on measuring moisture content in oil shale samples using Near-Infrared (NIR) diffuse reflectance spectroscopy. The research utilized a Cary 500 spectrophotometer equipped with a Praying Mantis diffuse reflectance accessory (DRA) to analyze samples stored at varying humidity levels. The study aimed to establish a correlation between absorbed water and specific spectral bands to predict oil yield from oil shale.
| Wavelength range | 2300 to 1300 nm |
|---|---|
| Beam mode | double |
| Average time | 0.3 sec |
| Slit height | reduced |
The non-bonded -OH band at 1900 nm shows a linear relationship with the amount of water absorbed.
The measurement uses a Cary 500 spectrophotometer equipped with a Praying Mantis diffuse reflectance accessory (DRA).
Baseline correction is performed using powdered KBr as a reference.