Back Cover: Determination of copper and lead ions using gold nanoparticles as a colorimetric probe with the aid of cysteine. Issue 9 (5th September 2022)

• Record Type: Journal Article
• Authors: Peng, Li‐Jing; Chen, Guo‐Ying; Zhou, Hang‐Yu; Yang, Feng‐Qing
• Is Part Of: Separation science plus. Volume 5:Issue 9(2022)
• Page Start: NA
• Page End: NA
• Publication Date: 2022-09-05
• Subjects: Chromatographic analysis -- Periodicals; 543.8
• DOI: 10.1002/sscp.202270075
• Languages: English
• ISSNs: 2573-1815

Abstract

Abstract : DOI: 10.1002/sscp.202200019 The cover picture shows that the lead ion (Pb 2+ ) and copper ion (Cu 2+ ) in lake water are detected by UV‐Vis analysis using gold nanoparticles (Au NPs) as the colorimetric probe. The formation of Pb‐O bond between Pb 2+ and L‐Cysteine can induce significant aggregation of Au NPs (blue color), conversely, Cu can catalyze the oxidation of Cysteine and prevent the aggregation of Au NPs (pink color). By analyzing the absorption spectra of Au NPs solutions, the quantitative determination of Pb 2+ and Cu 2+ can be realized.