Search: onr:"swepub:oai:DiVA.org:uu-509289" >
Determination of Di...
Determination of Dicofol in Tea Using Surface-Enhanced Raman Spectroscopy Coupled Chemometrics
-
- Ke, Qian (author)
- Jiangsu Univ, Sch Food & Biol Engn, Zhenjiang 212013, Peoples R China.
-
- Yin, Limei (author)
- Jiangsu Univ, Sch Food & Biol Engn, Zhenjiang 212013, Peoples R China.;Jiangsu Univ, China Light Ind Key Lab Food Intelligent Detect &, Zhenjiang 212013, Peoples R China.
-
- Jayan, Heera (author)
- Jiangsu Univ, Sch Food & Biol Engn, Zhenjiang 212013, Peoples R China.
-
show more...
-
- El-Seedi, Hesham (author)
- Uppsala universitet,Farmakognosi,Institutionen för farmaceutisk biovetenskap,Jiangsu Univ, Int Res Ctr Food Nutr & Safety, Zhenjiang 212013, Peoples R China.
-
- Gomez, Paula L. (author)
- Univ Buenos Aires, Consejo Nacl Invest Cientificasy Tecn CONICET, RA-C1428EGA Buenos Aires, Argentina.
-
- Alzamora, Stella M. (author)
- Univ Buenos Aires, Consejo Nacl Invest Cientificasy Tecn CONICET, RA-C1428EGA Buenos Aires, Argentina.
-
- Zou, Xiaobo (author)
- Jiangsu Univ, China Light Ind Key Lab Food Intelligent Detect &, Zhenjiang 212013, Peoples R China.;Univ Buenos Aires, Consejo Nacl Invest Cientificasy Tecn CONICET, RA-C1428EGA Buenos Aires, Argentina.
-
- Guo, Zhiming (author)
- Jiangsu Univ, Sch Food & Biol Engn, Zhenjiang 212013, Peoples R China.;Jiangsu Univ, Int Joint Res Lab Intelligent Agr & Agriprod Proc, Zhenjiang 212013, Peoples R China.
-
show less...
-
Jiangsu Univ, Sch Food & Biol Engn, Zhenjiang 212013, Peoples R China Jiangsu Univ, Sch Food & Biol Engn, Zhenjiang 212013, Peoples R China.;Jiangsu Univ, China Light Ind Key Lab Food Intelligent Detect &, Zhenjiang 212013, Peoples R China. (creator_code:org_t)
- MDPI AG, 2023
- 2023
- English.
-
In: Molecules. - : MDPI AG. - 1431-5157 .- 1420-3049. ; 28:14
- Related links:
-
https://uu.diva-port... (primary) (Raw object)
-
show more...
-
https://urn.kb.se/re...
-
https://doi.org/10.3...
-
show less...
Abstract
Subject headings
Close
- Dicofol is a highly toxic residual pesticide in tea, which seriously endangers human health. A method for detecting dicofol in tea by combining stoichiometry with surface-enhanced Raman spectroscopy (SERS) technology was proposed in this study. AuNPs were prepared, and silver shells were grown on the surface of AuNPs to obtain core-shell Au@AgNPs. Then, the core-shell Au@AgNPs were attached to the surface of a PDMS membrane by physical deposition to obtain a Au@AgNPs/PDMS substrate. The limit of detection (LOD) of this substrate for 4-ATP is as low as 0.28 x 10(-11) mol/L, and the LOD of dicofol in tea is 0.32 ng/kg, showing high sensitivity. By comparing the modeling effects of preprocessing and variable selection algorithms, it is concluded that the modeling effect of Savitzky-Golay combined with competitive adaptive reweighted sampling-partial least squares regression is the best (Rp = 0.9964, RPD = 10.6145). SERS technology combined with stoichiometry is expected to rapidly detect dicofol in tea without labels.
Subject headings
- NATURVETENSKAP -- Kemi -- Analytisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Analytical Chemistry (hsv//eng)
Keyword
- dicofol
- tea
- SERS
- Au@AgNPs/PDMS
- chemometrics
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
-
Molecules
(Search for host publication in LIBRIS)
To the university's database