High-Speed Spectral Analysis of Samples that Change over Time －Using the UV-1900i Plus Ultra High-Speed Scan－

User Benefits

- The UV-1900i Plus ultra high-speed scan(Survey scan) rapidly captures complete spectral profiles. - The UV-1900i Plus Survey scan allows users to follow short-time spectral changes associated with chemical reactions.

Introduction

Spectral analysis is essential for evaluating chemical reactions that involve color changes. But rapid chemical reactions, such as the aggregation of metal nanoparticles after the addition of an alkaline solution or the Belousov–Zhabotinsky (BZ) reaction between a metal salt and carboxylic acid catalyzed by bromide ions, cause very fast color changes that cannot be captured by normal methods, so they require high-speed spectral measurements. This Application News describes using the ultra high-speed scan(Survey scan) of the newly developed UV-1900i Plus UV-Vis spectrophotometer, which has a scanning speed of approximately 29,000 nm/min, to observe the changes that occurred when an alkaline solution was added to gold nanoparticles and the short-time changes that occurred during a BZ reaction.

February 4, 2025 GMT