SERS-based ultrasensitive detection of organophosphorus nerve agents via substrate’s surface modification

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• 作者：Qian Zhao^a ; ^b ; Guangqiang Liu^a ; ^{liugq@issp.ac.cn} ; Hongwen Zhang^a ; Fei Zhou^a ; Yue Li^a ; Weiping Cai^a ; ^b ; ^{wpcai@issp.ac.cn}
• 关键词：SERS-based detection ; Metal- weakly interacted molecules ; Nerve agents ; Surface modification ; Amidation reaction
• 刊名：Journal of Hazardous Materials
• 出版年：2017
• 出版时间：15 February 2017
• 年：2017
• 卷：324
• 期：part_PB
• 页码：194-202
• 全文大小：2150 K
• 卷排序：324

文摘

A strategy for SERS-based ultrasensitive detection of sarin-simulant is presented. Surface-modified SERS substrate can preferentially capture the sarin-simulant agent. Raman peak intensity shows a linear double logarithmic relation with simulant content. Such linear relation arises from Freundlich adsorption of simulant on the substrate. The limit of detection for sarin-simulant agent is down to about 1 ppb.