Citrate functionalized gold nanoparticles assisted micro extraction of L-cysteine in milk and water samples using Fourier transform infrared spectroscopy (Record no. 54323)
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| 000 -LEADER | |
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| fixed length control field | 02672nam a2200301Ia 4500 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | MX-MdCICY |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20250625162445.0 |
| 040 ## - CATALOGING SOURCE | |
| Transcribing agency | CICY |
| 090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN) | |
| Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) | B-20221 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 250602s9999 xx |||||s2 |||| ||und|d |
| 245 10 - TITLE STATEMENT | |
| Title | Citrate functionalized gold nanoparticles assisted micro extraction of L-cysteine in milk and water samples using Fourier transform infrared spectroscopy |
| 490 0# - SERIES STATEMENT | |
| Volume/sequential designation | Spectrochimica Acta Part A: Molecular and BioMolecular Spectroscopy, 267, p.120523, 2022 |
| 520 3# - SUMMARY, ETC. | |
| Summary, etc. | This paper describes the sensing application of citrate functionalized gold nanoparticles (AuNPs)employing for the determination of L-cysteine in food and water samples. It is established with diffuse reflectance Fourier transform infrared (DRS-FTIR)spectroscopic analysis. The disappearance of the thiol (-SH)band in the FTIR spectra and the shift in the peaks of the amino group (NH3+)and carboxylate group (-COO-)indicated the Au-S interaction and the aggregation of the NPs. The signal intensity of L-cysteine was enhanced due to hot-spots formed by the aggregation of AuNPs producing the effective absorption of electromagnetic radiation in the IR region for molecular vibration. The relationship between AuNPs and L-cysteine was theoretically investigated by the Density Function Theory (DFT)based on LANL2DZ with the aid of the Gaussian 09 (C.01)software. Interaction between AuNPs and L-cysteine molecules resulted to a shift to higher wavelengths in the plasmon bands, further verified by transmission electron microscopes (TEM), which have indicated random aggregated particles. Further dynamic light scattering (DLS)measurements showed a relatively high degree of polydispersity confirming the aggregation of the particles. Under optimized conditions, the calibration curve showed a good linearity range from 20 to 150 ?g mL?1 with a correlation coefficient (R2)0.990. The limit of detection and quantification were 1.04 and 3.44 ?g mL?1, respectively by DRS-FTIR. This modified AuNPs sample was used successfully in milk and water samples with adequate results to determine L-cysteine. |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | L-CYSTEINE |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | GOLD NANOPARTICLES |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | DIFFUSE REFLECTANCE-FOURIER TRANSFORM |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | INFRARED SPECTROSCOPY |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | MILK AND WATER SAMPLES |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Khalkho, B. R. |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Deb, M. K. |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Kurrey, R. |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Sahu, B. |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Saha, A. |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Patle, T. K. |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Shrivas, K. |
| 856 40 - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | <a href="https://drive.google.com/file/d/1ZYgCUGY-2SiICdfvNeZ3oWBDIsHHXFwO/view?usp=drivesdk">https://drive.google.com/file/d/1ZYgCUGY-2SiICdfvNeZ3oWBDIsHHXFwO/view?usp=drivesdk</a> |
| Public note | Para ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | Clasificación local |
| Koha item type | Documentos solicitados |
| Lost status | Source of classification or shelving scheme | Damaged status | Not for loan | Collection | Home library | Current library | Shelving location | Date acquired | Total checkouts | Full call number | Date last seen | Price effective from | Koha item type |
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| Clasificación local | Ref1 | CICY | CICY | Documento préstamo interbibliotecario | 25.06.2025 | B-20221 | 25.06.2025 | 25.06.2025 | Documentos solicitados |