Issue 10, 2024

Internal standard optimization advances sensitivity and robustness of ratiometric detection method

Abstract

We design a p-aminothiophenol (pATP) modified Au/ITO chip to determine nitrite ions in lake water by a ratiometric surface-enhanced Raman scattering (SERS) method based on nitrite ions triggering the transformation of pATP to p,p′-dimercaptoazobenzene (DMAB). Intriguingly, by using the SERS peak (at 1008 cm−1) from benzoic ring deforming as an internal standard instead of the traditional peak at 1080 cm−1, the detection sensitivity of the method was improved 10 times.

Graphical abstract: Internal standard optimization advances sensitivity and robustness of ratiometric detection method

Supplementary files

Article information

Article type
Communication
Submitted
19 Feb 2024
Accepted
20 Apr 2024
First published
29 Apr 2024

Analyst, 2024,149, 2806-2811

Internal standard optimization advances sensitivity and robustness of ratiometric detection method

Y. Jiang, J. Cao, S. Hu, T. Cheng, H. Wang, X. Guo, Y. Ying, X. Liu, F. Wang, Y. Wen, Y. Wu and H. Yang, Analyst, 2024, 149, 2806 DOI: 10.1039/D4AN00266K

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