Abstract

Photoacoustic spectroscopy was applied to the <i>in situ</i> densitometry of thin-layer chromatographic plates. Fast laser-scanning detection with signal enhancement was demonstrated at a resonant frequency of the cell. The use of phase difference between signal and background provided higher signal-to-noise ratios. Detection limit for Orange G was 170 pg, and the analytical curve was linear over three orders of magnitude.

Background reconstruction for camera-based thin-layer chromatography using the concave distribution feature of illumination

Li Zhang
Opt. Express 14(22) 10386-10392 (2006)

Highly sensitive trace gas detection based on a miniaturized 3D-printed Y-type resonant photoacoustic cell

Guojie Wu, Xue Wu, Zhenfeng Gong, Jiawei Xing, Yeming Fan, Junsheng Ma, Wei Peng, Qingxu Yu, and Liang Mei
Opt. Express 31(21) 34213-34223 (2023)

Helmholtz resonance effect in photoacoustic cells

Nils C. Fernelius
Appl. Opt. 18(11) 1784-1787 (1979)

Performance of the photoacoustic resonant cell remodified from Helmholtz cavity

Junjuan Zhao, Zhan Zhao, Lidong Du, and Shaohua Wu
Appl. Opt. 50(25) 4936-4941 (2011)

Fiber-ring laser-based intracavity photoacoustic spectroscopy for trace gas sensing

Qiang Wang, Zhen Wang, Jun Chang, and Wei Ren
Opt. Lett. 42(11) 2114-2117 (2017)