{"title":"使用同型半胱氨酸修饰的金纳米粒子对无机砷 (iAsIII) 进行选择性比色检测","authors":"Wei-Bin Tseng, Chien-Er Huang, Huan-Tsung Chang","doi":"10.1002/jccs.202400133","DOIUrl":null,"url":null,"abstract":"<p>Arsenic contamination in environmental waters poses global health and environmental risks. This study addresses the urgent need for rapid, selective, and sensitive detection of inorganic arsenic (iAs<sup>III</sup>) in environmental samples. Leveraging the unique properties of gold nanoparticles (AuNPs) and the selective binding affinity of homocysteine (Hcy), we developed a novel colorimetric sensor for iAs<sup>III</sup> detection. Our investigation elucidates the mechanism by which Hcy modifies AuNPs, enabling the selective detection of iAs<sup>III</sup> ions through chelation between amine and carboxyl groups, primarily with the predominant species H<sub>2</sub>AsO<sub>3</sub><sup>−</sup> at pH 12.0. Our sensor achieves high selectivity (>10-fold) for iAs<sup>III</sup> amid various interfering ions commonly found in environmental samples. Furthermore, we demonstrate exceptional sensitivity in detecting iAs<sup>III</sup>, with a low limit of detection (LOD) of 67 nM, aligning with regulatory standards for arsenic concentration in drinking water. The selectivity and sensitivity of our sensor were validated through experiments with various metal ions and real water samples. In conclusion, our study presents a comprehensive understanding of the mechanism, selectivity, and sensitivity of Hcy-modified AuNPs in detecting iAs<sup>III</sup>, offering a versatile nanosensor platform with significant implications for environmental monitoring and public health.</p>","PeriodicalId":17262,"journal":{"name":"Journal of The Chinese Chemical Society","volume":"71 8","pages":"843-851"},"PeriodicalIF":1.6000,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Selective colorimetric detection of inorganic arsenic (iAsIII) using homocysteine-modified gold nanoparticles\",\"authors\":\"Wei-Bin Tseng, Chien-Er Huang, Huan-Tsung Chang\",\"doi\":\"10.1002/jccs.202400133\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Arsenic contamination in environmental waters poses global health and environmental risks. This study addresses the urgent need for rapid, selective, and sensitive detection of inorganic arsenic (iAs<sup>III</sup>) in environmental samples. Leveraging the unique properties of gold nanoparticles (AuNPs) and the selective binding affinity of homocysteine (Hcy), we developed a novel colorimetric sensor for iAs<sup>III</sup> detection. Our investigation elucidates the mechanism by which Hcy modifies AuNPs, enabling the selective detection of iAs<sup>III</sup> ions through chelation between amine and carboxyl groups, primarily with the predominant species H<sub>2</sub>AsO<sub>3</sub><sup>−</sup> at pH 12.0. Our sensor achieves high selectivity (>10-fold) for iAs<sup>III</sup> amid various interfering ions commonly found in environmental samples. Furthermore, we demonstrate exceptional sensitivity in detecting iAs<sup>III</sup>, with a low limit of detection (LOD) of 67 nM, aligning with regulatory standards for arsenic concentration in drinking water. The selectivity and sensitivity of our sensor were validated through experiments with various metal ions and real water samples. In conclusion, our study presents a comprehensive understanding of the mechanism, selectivity, and sensitivity of Hcy-modified AuNPs in detecting iAs<sup>III</sup>, offering a versatile nanosensor platform with significant implications for environmental monitoring and public health.</p>\",\"PeriodicalId\":17262,\"journal\":{\"name\":\"Journal of The Chinese Chemical Society\",\"volume\":\"71 8\",\"pages\":\"843-851\"},\"PeriodicalIF\":1.6000,\"publicationDate\":\"2024-07-29\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of The Chinese Chemical Society\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/jccs.202400133\",\"RegionNum\":4,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of The Chinese Chemical Society","FirstCategoryId":"92","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/jccs.202400133","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Selective colorimetric detection of inorganic arsenic (iAsIII) using homocysteine-modified gold nanoparticles
Arsenic contamination in environmental waters poses global health and environmental risks. This study addresses the urgent need for rapid, selective, and sensitive detection of inorganic arsenic (iAsIII) in environmental samples. Leveraging the unique properties of gold nanoparticles (AuNPs) and the selective binding affinity of homocysteine (Hcy), we developed a novel colorimetric sensor for iAsIII detection. Our investigation elucidates the mechanism by which Hcy modifies AuNPs, enabling the selective detection of iAsIII ions through chelation between amine and carboxyl groups, primarily with the predominant species H2AsO3− at pH 12.0. Our sensor achieves high selectivity (>10-fold) for iAsIII amid various interfering ions commonly found in environmental samples. Furthermore, we demonstrate exceptional sensitivity in detecting iAsIII, with a low limit of detection (LOD) of 67 nM, aligning with regulatory standards for arsenic concentration in drinking water. The selectivity and sensitivity of our sensor were validated through experiments with various metal ions and real water samples. In conclusion, our study presents a comprehensive understanding of the mechanism, selectivity, and sensitivity of Hcy-modified AuNPs in detecting iAsIII, offering a versatile nanosensor platform with significant implications for environmental monitoring and public health.
期刊介绍:
The Journal of the Chinese Chemical Society was founded by The Chemical Society Located in Taipei in 1954, and is the oldest general chemistry journal in Taiwan. It is strictly peer-reviewed and welcomes review articles, full papers, notes and communications written in English. The scope of the Journal of the Chinese Chemical Society covers all major areas of chemistry: organic chemistry, inorganic chemistry, analytical chemistry, biochemistry, physical chemistry, and materials science.