Yuning Jiang, Jiaying Cao, Sen Hu, Tao Cheng, Hanyu Wang, Xiaoyu Guo, Ye Ying, Xinling Liu, Feng Wang, Ying Wen, Yiping Wu and Haifeng Yang
{"title":"Internal standard optimization advances sensitivity and robustness of ratiometric detection method†","authors":"Yuning Jiang, Jiaying Cao, Sen Hu, Tao Cheng, Hanyu Wang, Xiaoyu Guo, Ye Ying, Xinling Liu, Feng Wang, Ying Wen, Yiping Wu and Haifeng Yang","doi":"10.1039/D4AN00266K","DOIUrl":null,"url":null,"abstract":"<p >We design a <em>p</em>-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 <em>p</em>,<em>p</em>′-dimercaptoazobenzene (DMAB). Intriguingly, by using the SERS peak (at 1008 cm<small><sup>−1</sup></small>) from benzoic ring deforming as an internal standard instead of the traditional peak at 1080 cm<small><sup>−1</sup></small>, the detection sensitivity of the method was improved 10 times.</p>","PeriodicalId":63,"journal":{"name":"Analyst","volume":null,"pages":null},"PeriodicalIF":3.6000,"publicationDate":"2024-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Analyst","FirstCategoryId":"92","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2024/an/d4an00266k","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, ANALYTICAL","Score":null,"Total":0}
引用次数: 0
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.
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