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UV–Vis Spectrometers

UV–Vis Spectrometers

The absorbance of UV and visible (UV–visible) radiations is measured using a UV–visible spectrophotometer. Deuterium lamps, which emit UV radiation, and tungsten lamps, which produce radiation in the visible region, are used as light sources in UV–visible spectrophotometers. A monochromator or prism is used for diffraction grating, i.e., to split the incoming radiation into different wavelengths. A system of slits is used to focus the desired wavelength on the sample cell. Samples for...

Ultraviolet and Visible (UV–Vis) Spectroscopy: Overview

Ultraviolet and Visible (UV–Vis) Spectroscopy: Overview

Ultraviolet–visible (UV–visible or UV–Vis) spectroscopy is an analytical technique that investigates the interaction between matter and UV–Vis light within the electromagnetic spectrum. This method is widely used for its versatility, simplicity, and relatively quick data acquisition, making it valuable for both qualitative and quantitative analysis. When UV–Vis radiation passes through a material, molecules absorb light depending on the energy required for electronic transitions. As a result...

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Related Experiment Video

Updated: Jun 15, 2026

Diffuse Reflectance Infrared Spectroscopic Identification of Dispersant/Particle Bonding Mechanisms in Functional Inks

Diffuse Reflectance Infrared Spectroscopic Identification of Dispersant/Particle Bonding Mechanisms in Functional Inks

Published on: May 8, 2015

[Multi-spectroscopy applied to study blue gel pen inks].

Xu-Dong Zhang¹, Ling-Xiong Huang, Xiang Lin

¹State Key Lab of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China. zxd@fjirsm.ac.cn

Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu

|March 10, 2010

Summary

This study characterized blue gel pen inks using multi-spectroscopy techniques like FTIR and Raman spectroscopy. The findings aid in document analysis and understanding ink aging over time.

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Quantitative Characterization of Liquid Photosensitive Bioink Properties for Continuous Digital Light Processing Based Printing

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Last Updated: Jun 15, 2026

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Quantitative Characterization of Liquid Photosensitive Bioink Properties for Continuous Digital Light Processing Based Printing

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Published on: April 14, 2023

Area of Science:

Forensic Science
Analytical Chemistry
Materials Science

Context:

Characterization of blue gel pen inks on paper.
Analysis of ink composition and aging properties.

Purpose:

To classify blue gel pen inks using multi-spectroscopy.
To investigate ink composition changes during artificial aging.
To evaluate spectroscopic methods for document analysis.

Summary:

Applied Fourier-transform infrared (FTIR) spectroscopy, dispersive Raman spectroscopy, and UV-Vis spectroscopy to analyze 28 blue gel pen inks.
Classified inks into four groups based on distinct spectral features (absorption and Raman shifts).
Utilized Thermally Desorbed Mass Spectrometry (TD-MS) to study ink composition changes during artificial aging.

Impact:

Provides a spectroscopic basis for differentiating and identifying blue gel pen inks.
Offers insights into the degradation pathways of inks under artificial aging conditions.
Discusses the utility of spectroscopy in forensic document examination and dating research.