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Quantitative analysis of four PAHs in oily sludge by surface-enhanced Raman spectroscopy (SERS) combined with partial least squares regression (PLS) based on a novel nano-silver-silicon coupling substrate.
Ma, Changfei; Zhang, Qun; Liang, Jing; Yang, Shan; Zhang, Tianlong; Ruan, Fangqi; Tang, Hongsheng; Li, Hua.
Afiliación
  • Ma C; Key Laboratory of Synthetic and Natural Functional Molecular of the Ministry of Education, College of Chemistry & Material Science, Northwest University, Xi'an 710127, China.
  • Zhang Q; Key Laboratory of Synthetic and Natural Functional Molecular of the Ministry of Education, College of Chemistry & Material Science, Northwest University, Xi'an 710127, China.
  • Liang J; Key Laboratory of Synthetic and Natural Functional Molecular of the Ministry of Education, College of Chemistry & Material Science, Northwest University, Xi'an 710127, China.
  • Yang S; College of Chemistry and Materials, Weinan Normal University, Weinan 714099, China.
  • Zhang T; Key Laboratory of Synthetic and Natural Functional Molecular of the Ministry of Education, College of Chemistry & Material Science, Northwest University, Xi'an 710127, China.
  • Ruan F; Department of Ultrasound, Xijing Hypertrophic Cardiomyopathy Center, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China. Electronic address: fqruannwu@163.com.
  • Tang H; Key Laboratory of Synthetic and Natural Functional Molecular of the Ministry of Education, College of Chemistry & Material Science, Northwest University, Xi'an 710127, China. Electronic address: tanghongsheng@nwu.edu.cn.
  • Li H; Key Laboratory of Synthetic and Natural Functional Molecular of the Ministry of Education, College of Chemistry & Material Science, Northwest University, Xi'an 710127, China. Electronic address: huali@nwu.edu.cn.
Spectrochim Acta A Mol Biomol Spectrosc ; 318: 124531, 2024 Oct 05.
Article en En | MEDLINE | ID: mdl-38805992
ABSTRACT
Polycyclic aromatic hydrocarbons (PAHs) present in oily sludge generated by the petroleum and petrochemical industries have emerged as a prominent concern within the realm of environmental conservation. The precise determination of PAHs holds immense significance in both petroleum geochemistry and environmental protection. In this study, a combination of surface-enhanced Raman spectroscopy (SERS) and solid-liquid extraction was employed for the screening of PAHs in oily sludge. Methanol was utilized as the extraction solvent for PAHs, while nanosilver-silicon coupling substrates were employed for their detection. The SERS spectrum was acquired using a portable Raman spectrometer. The nano silver-silicon coupling substrate exhibits excellent uniformity, with relative standard deviations (RSDs) of Phenanthrene, Fluoranthrene, Fluorene and Naphthalene (Phe, Flt, Flu and Nap) being 2.8%, 1.08%, 1.41%, and 5.44% respectively. Moreover, the limits of detection (LODs) achieved remarkable values of 0.542 µg/g, 0.342 µg/g, 0.541 µg/g, and 5.132 µg/g. The quantitative analysis of PAHs in oily sludge was investigated using SERS technology combined with partial least squares (PLS). The optimal PLS calibration model was optimized by combining spectral preprocessing methods and using the SiPLS (Synergy interval partial least squares)-VIP (Variable Importance in Projection) hybrid variable selection strategy. The prediction performance of the D1st (First derivative)-WT (Wavelet transform)-SiPLS-VIP-PLS model was deemed satisfactory, as evidenced by high R2P values of 0.9851, 0.9917, and 0.9925 for Phe, Flt, and Flu respectively; additionally, the corresponding MREP values were found to be 0.0580, 0.0668, and 0.0669 respectively. However, for Nap analysis, the D1st-WT-PLS model proved to be a better calibration model with an R2P value of 0.9864 and an MREP (Mean relative error of prediction) value of 0.0713. In summary, SERS technology combined with PLS based on different spectral pretreatment methods and mixed variable selection strategies is a promising method for quantitative analysis of PAHs in oily sludge, which will provide new ideas and methods for the quantitative analysis of PAHs in oily sludge.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Spectrochim Acta A Mol Biomol Spectrosc Asunto de la revista: BIOLOGIA MOLECULAR Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Spectrochim Acta A Mol Biomol Spectrosc Asunto de la revista: BIOLOGIA MOLECULAR Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Reino Unido