PMID- 37666953 OWN - NLM STAT- MEDLINE DCOM- 20230906 LR - 20231123 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 13 IP - 1 DP - 2023 Sep 4 TI - Identification and classification of ATS in oral fluid based on Ag nanoassemblies on Si surface doped with Au nanobipyramids. PG - 14526 LID - 10.1038/s41598-023-41860-5 [doi] LID - 14526 AB - Herein, a novel Ag NP substrate doped with Au nanobipyramids was designed and fabricated via a convenient procedure of galvanic reaction for the identification and classification of amphetamine-type stimulants (ATS) in oral fluids in combination with surface enhanced Raman scattering (SERS). The substrate was shown to have a three-dimensional nanostructure, high SERS activity, and good stability. In combination with SERS, the Ag NP substrate doped with Au nanobipyramids was able to detect ultra-low traces of ATS, including amphetamine, methylamphetamine (MA), 3,4-methylenedioxyamphetamine (MDA), and 3,4-methylenedioxymethylamphetamine (MDMA) in oral fluid with limit of detection (LOD) and limit of determination quantitation (LOQ) as low as 10(-9) mg/mL, which is much better than the current spectroscopic techniques. The equations between concentration and peaks intensity for quantitative analysis displied good doublelogarithmic linear relations and reliability figures of merit at nanogram concentration level in compartion with GC-MS method. The approach can be broadly applied to the ultra-low trace detection of ATS in oral fluid and would be particularly useful for the analyses of nitrogenous organic compounds. CI - (c) 2023. Springer Nature Limited. FAU - Cui, Sheng-Feng AU - Cui SF AD - Center for Traffic Evidence Technology, Zhengzhou Key Laboratory of Criminal Science and Technology, Department of Criminal Science and Technology, Railway Police College, Zhengzhou, 450053, People's Republic of China. cuishengfeng@rpc.edu.cn. FAU - Yang, Hai-Long AU - Yang HL AD - Center for Traffic Evidence Technology, Zhengzhou Key Laboratory of Criminal Science and Technology, Department of Criminal Science and Technology, Railway Police College, Zhengzhou, 450053, People's Republic of China. FAU - Huang, Xin AU - Huang X AD - Center for Traffic Evidence Technology, Zhengzhou Key Laboratory of Criminal Science and Technology, Department of Criminal Science and Technology, Railway Police College, Zhengzhou, 450053, People's Republic of China. FAU - Wan, Jing-Wei AU - Wan JW AD - Center for Traffic Evidence Technology, Zhengzhou Key Laboratory of Criminal Science and Technology, Department of Criminal Science and Technology, Railway Police College, Zhengzhou, 450053, People's Republic of China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20230904 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 RN - CK833KGX7E (Amphetamine) RN - 0 (Central Nervous System Stimulants) RN - 44RAL3456C (Methamphetamine) RN - 4764-17-4 (3,4-Methylenedioxyamphetamine) RN - 0 (Nitrogen Compounds) SB - IM MH - Amphetamine MH - Reproducibility of Results MH - *Central Nervous System Stimulants MH - *Methamphetamine MH - *3,4-Methylenedioxyamphetamine MH - Nitrogen Compounds PMC - PMC10477168 COIS- The authors declare no competing interests. EDAT- 2023/09/05 00:42 MHDA- 2023/09/06 06:42 PMCR- 2023/09/04 CRDT- 2023/09/04 23:29 PHST- 2023/07/09 00:00 [received] PHST- 2023/09/01 00:00 [accepted] PHST- 2023/09/06 06:42 [medline] PHST- 2023/09/05 00:42 [pubmed] PHST- 2023/09/04 23:29 [entrez] PHST- 2023/09/04 00:00 [pmc-release] AID - 10.1038/s41598-023-41860-5 [pii] AID - 41860 [pii] AID - 10.1038/s41598-023-41860-5 [doi] PST - epublish SO - Sci Rep. 2023 Sep 4;13(1):14526. doi: 10.1038/s41598-023-41860-5.