Real‐time and in situ monitoring of organosilicon‐induced thiram penetration into cabbage leaves by surface‐enhanced Raman scattering mapping. (7th August 2022)

• Record Type: Journal Article
• Authors: Pan, Ting‐tiao; Guo, Meiting; Lu, Ping; Hu, Deyu
• Is Part Of: Journal of the science of food and agriculture. Volume 102:Number 15(2022)
• Page Start: 7405
• Page End: 7413
• Publication Date: 2022-08-07
• Subjects: SERS mapping -- penetration behavior -- real‐time monitoring -- in situ monitoring -- thiram -- organosilicon; Food -- Periodicals; Agriculture -- Periodicals; 664
• DOI: 10.1002/jsfa.12109
• Languages: English
• ISSNs: 0022-5142

Abstract

Abstract: BACKGROUND: Understanding pesticide penetration behavior is important for effective application of pesticides. However, there is a lack of an effective method to monitor pesticide penetration behavior and its changing process. In the present study, a novel surface‐enhanced Raman scattering (SERS) mapping method was used for real‐time and in situ tracking of the penetration behaviors of thiram and thiram–organosilicon mixture on cabbage leaves. RESULTS: The results suggest that thiram has very weak ability to penetrate into cabbage leaves. However, when the thiram–organosilicon mixture was placed on leaf surfaces, a clear thiram signal was detected inside the leaf after 2 h of exposure, a strong signal was observed after 12 h, and the penetration depth of thiram was approximately 200 μm after 48 h. CONCLUSION: SERS mapping was demonstrated to be a reliable method for in situ monitoring of organosilicon‐induced thiram penetration into cabbage leaf over time. The present study provides a new reference for rationally selecting adjuvants, effectively applying pesticides, and reducing pesticides residue in food. © 2022 Society of Chemical Industry.