Using PDMS Plasma Cavity SERS Substrate for the Detection of Aspartame
Surface-enhanced Raman spectroscopy (SERS) was used to simply and sensitively detect the artificial sweetener aspartame added to purified water. In this paper, a cavity formed spontaneously by silver ion droplets, and liquid polydimethylsiloxane (PDMS) is used as an SERS substrate to integrate plasm...
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| Veröffentlicht in: | Journal of Spectroscopy 2020-01, Vol.2020 (2020), p.1-7 |
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| creator | Xu, Jianwen Chen, Guoqing Wang, Tingyu Zhu, Zhuowei Gao, Hui Gu, Jiao Zhu, Chun Li, Lei Ma, Chaoqun Chen, Lvming Du, Chenxu |
| description | Surface-enhanced Raman spectroscopy (SERS) was used to simply and sensitively detect the artificial sweetener aspartame added to purified water. In this paper, a cavity formed spontaneously by silver ion droplets, and liquid polydimethylsiloxane (PDMS) is used as an SERS substrate to integrate plasma nanoparticles into optical devices. Firstly, Raman spectral characteristics of aspartame powder and aspartame aqueous solution were analyzed. Secondly, the effect of aspartame content in purified water on SERS intensity was investigated by using the prepared PDMS plasma cavity to test the samples. Thirdly, the SERS calibration curve was established by using the characteristic peak intensity of aspartame, and a good linearity relationship between the concentration of aspartame added in purified water and the characteristic peak intensity of 1588(±5) cm-1 was obtained. The linear regression equation and correlation coefficient (r) were y = 11412.73874 x + 107.36722 and 0.99593, respectively. The average recovery of aspartame in purified water was 101–106%, and the relative standard deviation (RSD) was 0.121–0.496%. The experimental results show that using this method can detect aspartame in purified water correctly, which is expected to be used in the identification and detection of sweeteners in purified water. |
| doi_str_mv | 10.1155/2020/4212787 |
| format | Article |
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In this paper, a cavity formed spontaneously by silver ion droplets, and liquid polydimethylsiloxane (PDMS) is used as an SERS substrate to integrate plasma nanoparticles into optical devices. Firstly, Raman spectral characteristics of aspartame powder and aspartame aqueous solution were analyzed. Secondly, the effect of aspartame content in purified water on SERS intensity was investigated by using the prepared PDMS plasma cavity to test the samples. Thirdly, the SERS calibration curve was established by using the characteristic peak intensity of aspartame, and a good linearity relationship between the concentration of aspartame added in purified water and the characteristic peak intensity of 1588(±5) cm-1 was obtained. The linear regression equation and correlation coefficient (r) were y = 11412.73874 x + 107.36722 and 0.99593, respectively. The average recovery of aspartame in purified water was 101–106%, and the relative standard deviation (RSD) was 0.121–0.496%. The experimental results show that using this method can detect aspartame in purified water correctly, which is expected to be used in the identification and detection of sweeteners in purified water.</description><identifier>ISSN: 2314-4920</identifier><identifier>EISSN: 2314-4939</identifier><identifier>DOI: 10.1155/2020/4212787</identifier><language>eng</language><publisher>Cairo, Egypt: Hindawi Publishing Corporation</publisher><subject>Adsorption ; Aqueous solutions ; Aspartame ; Correlation coefficients ; Curing ; Dimethylpolysiloxane ; Flexibility ; Linearity ; Methods ; Nanoparticles ; Plasma ; Polydimethylsiloxane ; Purification ; Raman spectroscopy ; Regression analysis ; Silicone resins ; Soft drinks ; Spectrum analysis ; Substrates ; Sweeteners ; Water ; Water purification</subject><ispartof>Journal of Spectroscopy, 2020-01, Vol.2020 (2020), p.1-7</ispartof><rights>Copyright © 2020 Lvming Chen et al.</rights><rights>COPYRIGHT 2020 John Wiley & Sons, Inc.</rights><rights>Copyright © 2020 Lvming Chen et al. This is an open access article distributed under the Creative Commons Attribution License (the “License”), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. 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In this paper, a cavity formed spontaneously by silver ion droplets, and liquid polydimethylsiloxane (PDMS) is used as an SERS substrate to integrate plasma nanoparticles into optical devices. Firstly, Raman spectral characteristics of aspartame powder and aspartame aqueous solution were analyzed. Secondly, the effect of aspartame content in purified water on SERS intensity was investigated by using the prepared PDMS plasma cavity to test the samples. Thirdly, the SERS calibration curve was established by using the characteristic peak intensity of aspartame, and a good linearity relationship between the concentration of aspartame added in purified water and the characteristic peak intensity of 1588(±5) cm-1 was obtained. The linear regression equation and correlation coefficient (r) were y = 11412.73874 x + 107.36722 and 0.99593, respectively. The average recovery of aspartame in purified water was 101–106%, and the relative standard deviation (RSD) was 0.121–0.496%. The experimental results show that using this method can detect aspartame in purified water correctly, which is expected to be used in the identification and detection of sweeteners in purified water.</abstract><cop>Cairo, Egypt</cop><pub>Hindawi Publishing Corporation</pub><doi>10.1155/2020/4212787</doi><tpages>7</tpages><orcidid>https://orcid.org/0000-0001-7840-5719</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | Adsorption Aqueous solutions Aspartame Correlation coefficients Curing Dimethylpolysiloxane Flexibility Linearity Methods Nanoparticles Plasma Polydimethylsiloxane Purification Raman spectroscopy Regression analysis Silicone resins Soft drinks Spectrum analysis Substrates Sweeteners Water Water purification |
| title | Using PDMS Plasma Cavity SERS Substrate for the Detection of Aspartame |
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