Vibrational Spectroscopy最新文献

{"title":"Application of ATR-FTIR and chemometrics for rapid lard adulteration assessment in confectionery","authors":"Sobia Kunbhar,&nbsp;Farah Naz Talpur,&nbsp;Sarfraz Ahmed Mahesar,&nbsp;Hassan Imran Afridi,&nbsp;Ghulam Fareed,&nbsp;Noshad Razzaque,&nbsp;Mehr-un Nisa","doi":"10.1016/j.vibspec.2024.103762","DOIUrl":"10.1016/j.vibspec.2024.103762","url":null,"abstract":"<div><div>Consumption of confectionery products such as chocolates and biscuits are popular among all age groups in the population around the globe. Adulteration of confectionery fats with cheaper animal fats, such as lard, has become an issue in recent years. A simple and rapid analytical method of attenuated total reflectance in Fourier transform infrared spectroscopy (ATR-FTIR) was developed in order to determine the lard content in imported chocolates and biscuits. For quantitative measurement, the partial least square (PLS) model with multivariate calibration for adulterant prediction was developed. A lard oil calibration graph was drawn (2–35 %) with palm oil in the region of 3035–2984 cm⁻¹, with the correlation coefficient (R²) = 0.9994 with minimum errors in root mean square error of calibration (RMSEC) and root mean square error of prediction (RMSEP) with the value of 0.320 and 0.315 respectively. The root mean square error of cross-validation (RMSECV) was used to find the calibration model accuracy which was found to be 1.17 with the best limit of detection (LOD) 0.10 % and limit of quantification (LOQ) 0.35 %. The developed ATR-FTIR method is robust accurate and precise in terms of lard detection in confectionery products (chocolate and biscuits).</div></div>","PeriodicalId":23656,"journal":{"name":"Vibrational Spectroscopy","volume":"136 ","pages":"Article 103762"},"PeriodicalIF":2.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143160971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prediction of the probability of metastasis to the sentinel lymph node in breast cancer by ATR-FTIR spectroscopy and chemometrics","authors":"Nikolas Mateus Pereira de Souza ,&nbsp;Dhuli Kimberli Abeg da Rosa ,&nbsp;Caroline de Moraes ,&nbsp;Licerio Vicente Padoin ,&nbsp;Daniel Prá ,&nbsp;André Poisl Fay ,&nbsp;Valeriano Antonio Corbellini ,&nbsp;Alexandre Rieger","doi":"10.1016/j.vibspec.2025.103770","DOIUrl":"10.1016/j.vibspec.2025.103770","url":null,"abstract":"<div><div>The status of axillary lymph nodes is considered one of the most critical prognostic indicators for patients diagnosed with invasive breast cancer (BC). The Breast Service of Memorial Sloan Kettering Cancer Center (MSKCC) nomogram was developed to obtain the likelihood of metastasis to the sentinel lymph node (SLN). Blood plasma from 28 patients with BC stages I, II, and III were collected and analyzed by Attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR). Therefore, the aim of the study is to use ATR-FTIR spectroscopy and chemometrics in blood plasma to predict the probability of SLN metastases in breast cancer in ≥ 50 % (Model 1) or &gt; 30 % (Model 2) determined by the MSKCC nomogram. The chemometric models were performed with orthogonal partial least squares discriminant analysis (OPLS-DA). Both Models 1 and 2 obtained sensitivity and specificity of 100 %. Model 1 was built with 7 latent variables (LV) having a cumulative variance of 92.56 % and root mean square error of cross-validation (RMSECV) of 0.0096. Model 2 for 6 LV had a cumulative variance of 94.17 % and RMSECV of 0.0031. External validation was only tested for Model 1, obtaining 100 % accuracy and RMSE of validation (RMSEV) of 0.274. Proteins and nucleic acids were the biomolecules with the highest contribution to this prediction. Therefore, ATR-FTIR spectroscopy generates valuable insights into the tumor aggressiveness and the probability of metastasis to the SLN.</div></div>","PeriodicalId":23656,"journal":{"name":"Vibrational Spectroscopy","volume":"136 ","pages":"Article 103770"},"PeriodicalIF":2.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143161049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"IR spectra of the CH3 stretching region of methylamine monomer, dimer and trimer in helium nanodroplets","authors":"Hamad Ashraf,&nbsp;Philipp Meyer,&nbsp;Stefan Henkel,&nbsp;Gerhard Schwaab,&nbsp;Martina Havenith","doi":"10.1016/j.vibspec.2024.103761","DOIUrl":"10.1016/j.vibspec.2024.103761","url":null,"abstract":"<div><div>We report the infrared spectra of the CH₃ stretching region in methylamine monomer and its clusters in superfluid helium nanodroplets. Using mass-selective IR spectroscopy in combination with band intensities as the function of methylamine pressure, we were able to assign the vibrations of the (methylamine)_1–3 clusters. In addition to the fundamental vibrations, overtone and combination bands are observed. As an example, in the high-resolution spectrum of methylamine monomer, 15 spectral features were observed, compared to 9 features reported in the literature. All the bands could be assigned based on recent anharmonic calculations.</div></div>","PeriodicalId":23656,"journal":{"name":"Vibrational Spectroscopy","volume":"136 ","pages":"Article 103761"},"PeriodicalIF":2.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143161050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Developing a fast Fourier transform infrared spectroscopy system for precise and reliable grade differentiation of Gastrodia elata","authors":"Shuting Lin ,&nbsp;Zerong Liu ,&nbsp;Hai Qin ,&nbsp;Liqin Jiang ,&nbsp;Di Zhao ,&nbsp;Qinzhu Li ,&nbsp;Quanhong Ou","doi":"10.1016/j.vibspec.2025.103769","DOIUrl":"10.1016/j.vibspec.2025.103769","url":null,"abstract":"<div><div><em>Gastrodia elata</em> belongs to the rare medicinal herbs, in China classified as a plant under state protection (Category II). This research utilizes Fourier Transform Infrared Spectroscopy (FTIR) combined with machine learning algorithms to develop an intelligent grading detection model for <em>Gastrodia elata</em>, with different grades of spring and winter <em>Gastrodia elata</em> harvested in Zhaotong, Yunnan as the main research objects. An initial exploration of both the original spectra (OS) and the preprocessed spectra (PS), which were processed through eleven distinct pretreatment methodologies, was conducted using Principal Component Analysis (PCA) within the spectral range spanning 4000 to 400 cm^-¹. Remarkably, the FTIR of the diverse grades of <em>Gastrodia elata</em> exhibited a discernible clustering pattern, with the preprocessed spectral data exhibiting a superior clustering effect compared to the original spectral data. To ascertain the optimal detection model, we employed a diverse array of machine learning algorithms, including Naive Bayes (NB), Support Vector Machine (SVM), Tree (T), Logistic Regression (LR), and Multi-layer Perceptron (MLP), to establish a comprehensive grade detection model for <em>Gastrodia elata</em>, leveraging both the original spectral data and those subjected to effective preprocessing. Upon comparison, the MLP model emerged as the superior choice, demonstrating exceptional overall classification performance. Notably, the MLP model achieved 100 % accuracy on the test set, irrespective of the preprocessing method applied to the spectral data. Drawing upon these findings, the authors designed an intelligent detection system, namely \"Intelligent Detection System for the Grade of <em>Gastrodia elata</em> Based on MLP Model and FTIR Technology\". This research highlights the potential of machine learning classification models using FTIR technology to accurately detect and distinguish <em>Gastrodia elata</em> grades.</div></div>","PeriodicalId":23656,"journal":{"name":"Vibrational Spectroscopy","volume":"136 ","pages":"Article 103769"},"PeriodicalIF":2.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143161051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"ATR-FTIR as a green tool for rapid identity authentication of Gastrodia elata Blume under the influence of multi-biological variability","authors":"Zhiyi Ji ,&nbsp;Honggao Liu ,&nbsp;Jieqing Li ,&nbsp;Yuanzhong Wang","doi":"10.1016/j.vibspec.2024.103766","DOIUrl":"10.1016/j.vibspec.2024.103766","url":null,"abstract":"<div><div>Rapid authentication of labelling information for medicinal and edible plants interfered by multiple biological variability (species, origin, growth pattern, etc.) has always been an important challenge for market supervision and management as well as consumers purchase orientation. <em>Gastrodia elata</em> Blume (<em>G.elata</em>) is used both as a food and as an herbal medicine for the treatment of migraine, hyperglycaemia and epilepsy. The advantages of Attenuated total reflection Fourier-transform infrared (ATR-FTIR) spectroscopy, which is a practical, fast and reliable spectroscopic technique used for solid samples, can be combined with chemometric models allows for fast confirmation of the desired label under the influence of different factors. A total of 344 <em>G.elata</em> samples from five geographic origins, three growth patterns and four species were discriminatively analyzed using ATR-FTIR spectra combined with the Orthogonal partial least squares discriminant analysis (OPLS-DA) model and Support Vector Machine (SVM) model. Spectra were preprocessed using S-G, FD, SD, MSC and SNV and their combinations to eliminate scattering and baseline drift, and the clustering results of PCA showed that S-G+SD preprocessing was the most effective. The models developed all had good accuracy with 97.09–100.00 % and Matthews correlation coefficient (Mcc) values of 0.80–1.00. The linear model PLSR and the nonlinear model SVR were used to predict the weight of dried individuals of <em>G.elata</em> for quality grade information, and the PLSR model with S-G+SD preprocessing could obtain a prediction accuracy of R²_P = 0.94 and RPD= 4.19. This study can provide a green and feasible method for the authenticity identification of <em>G.elata</em> labels under the influence of multiple biological variability, which is of great significance for the quality control and rapid detection of medicinal and edible plants in the market.</div></div>","PeriodicalId":23656,"journal":{"name":"Vibrational Spectroscopy","volume":"136 ","pages":"Article 103766"},"PeriodicalIF":2.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143161053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Real-time monitoring of multiparameter in 1,3-propanediol production process with near-infrared spectroscopy","authors":"Zijian Liang,&nbsp;Chijian Zhang,&nbsp;Liyun Hu,&nbsp;Yunlong Cai,&nbsp;Maolang Deng","doi":"10.1016/j.vibspec.2024.103760","DOIUrl":"10.1016/j.vibspec.2024.103760","url":null,"abstract":"<div><div>1,3-propanediol (1,3-PDO) is a significant product of fermentation, with glycerol serving as the primary substrate in most cases. Bioprocess control based on real-time information of feedstock and main products is crucial for reducing the cost of production. However, rapid quantification of 1,3-PDO and glycerol remains challenging due to their highly similar molecular structures. In this study, the feasibility of near-infrared (NIR) spectroscopy to monitor 1,3-PDO, glycerol, acetate, and butyrate concentrations in the fermentation process using strain <em>Clostridium pasteurianum</em> was evaluated. NIR spectra were acquired through at-line measurement involving sampling and ex-situ analysis or on-line measurement with a fiber optic probe immersed in fermentation broth, integrated with Partial Least Squares (PLS) regression to establish calibration models on a laboratory-scale and pilot-scale. The best PLS regressions of 1,3-PDO, glycerol, acetate, and butyrate with two measurement approaches provided excellent performance, with the root-mean-squared errors of prediction (RMSEP) of 1.656 g/L, 1.502 g/L, 0.746 g/L, and 0.557 g/L in at-line measurement and 1.113 g/L, 1.581 g/L, 0.415 g/L, and 0.526 g/L in on-line measurement. The cross-scale application performance of at-line measurement was evaluated by an external fermentation trial and an acceptable result was achieved. At-line measurement technique represents a superior choice for the optimization of fermentation process since the robustness across varying fermentation scales and its applicability in multiple bioreactors. Thus, a calibration model developed for one bioreactor is likely to be used in other bioreactors, which enables the reduction of modeling costs. On-line measurement technique, owing to its automated operation and frequent data acquisition, enables real-time monitoring and precise control of the fermentation process, thereby reducing cost and improving production efficiency.</div></div>","PeriodicalId":23656,"journal":{"name":"Vibrational Spectroscopy","volume":"136 ","pages":"Article 103760"},"PeriodicalIF":2.7,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143160972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Research on vehicle-mounted measurement of NO2 based on cavity ring-down spectroscopy","authors":"Dehao Li ,&nbsp;Dan Wang ,&nbsp;Yunfei Gao ,&nbsp;Jun Duan ,&nbsp;Zhiyan Li ,&nbsp;Hao Chen ,&nbsp;Yuanyuan Qian","doi":"10.1016/j.vibspec.2024.103752","DOIUrl":"10.1016/j.vibspec.2024.103752","url":null,"abstract":"<div><div>Nitrogen dioxide (NO₂) is a significant atmospheric pollutant with notable impacts on the environment and human health. The measurement of NO₂ concentration is crucial for gas phase analysis in atmospheric chemistry, assessment of regional pollution levels, and improvement of data management systems. In this paper, a highly sensitive cavity ring-down spectroscopy (CRDS) technique has been used to measure the concentration of NO₂. The CRDS system utilizes a diode laser and high reflectivity mirrors (over 99.99 %) at 405 nm, achieving a minimum detection limit of 43 ppt (1σ, 40 s) and 92 ppt (1σ, 10 s) as determined by Allan variance. In order to improve the measurement accuracy and stability, the Kalman filtering has been used to process the background ring-down time and ring-down time, and the minimum detection limit can be increased by about 2.06 times to 45 ppt (1σ, 10 s), while preserving temporal response and reducing noise. Under the condition of atmospheric NO₂ measurement, a comparative experiment was carried out in Hefei with the CEAS system. The linear fitting slope was <span><math><mrow><mn>1.033</mn><mo>±</mo><mn>0.017</mn></mrow></math></span>, and the correlation coefficient reached about 92 %. The CRDS device was integrated for vehicle-mounted measurements of NO₂ concentrations in suburban, urban, and industrial areas of Maanshan City. The experimental result has demonstrated that this system can achieve high-precision, high-sensitivity, and stable measurements of NO₂.</div></div>","PeriodicalId":23656,"journal":{"name":"Vibrational Spectroscopy","volume":"136 ","pages":"Article 103752"},"PeriodicalIF":2.7,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142756899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Harnessing the past: Vibration analysis of organic additives in ancient plasters for sustainable building solutions","authors":"Bhushan Dhige ,&nbsp;Manager Rajdeo Singh","doi":"10.1016/j.vibspec.2024.103751","DOIUrl":"10.1016/j.vibspec.2024.103751","url":null,"abstract":"<div><div>This study investigates plant-based organic additives and grains used in ancient earthen plasters from the caves of Karla, Bhaja, Pitalkhora, Ellora, and Aurangabad in Maharashtra, India, highlighting their relevance for sustainable modern construction. Stereo microscopy, FTIR spectrophotometry, and phytochemical analysis identified rice husk, millet, wheat, Chenopodium album, Paspalum, barnyard millet, foxtail millet, and Fumaria seeds as key organic components. Starch grain analysis confirmed the presence of wheat, millet, and mung bean starches, while polarized light microscopy revealed distinctive birefringence patterns, such as the Maltese cross. FTIR analysis of solvent extractions identified natural compounds, including starches, gums, proteins, oils, waxes, and tree resins. These organic additives, especially rice husk, prevalent in Karla, Bhaja, and Pitalkhora samples, and the balanced composition of hemp fibers, seeds, and gums in Ellora samples, contributed significantly to the strength and durability of the plasters. The use of beeswax and tree resins as natural binders further underscores the ingenuity of these ancient techniques. This research not only highlights the botanical diversity in ancient construction but also draws critical connections to modern sustainable practices. The carbon-negative potential of these materials, combined with their renewability and resilience, aligns closely with contemporary green building strategies, offering inspiration for eco-friendly construction rooted in traditional Indian architecture.</div></div>","PeriodicalId":23656,"journal":{"name":"Vibrational Spectroscopy","volume":"136 ","pages":"Article 103751"},"PeriodicalIF":2.7,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142748244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The infrared spectra of primary amides, Part 2. Deuteration of benzamide and hydrogen bonding effects of ortho alkoxybenzamides","authors":"T.L. Threlfall ,&nbsp;P.N. Threlfall-Holmes ,&nbsp;R. Grinter","doi":"10.1016/j.vibspec.2024.103748","DOIUrl":"10.1016/j.vibspec.2024.103748","url":null,"abstract":"<div><div>The wavenumber values in the carbonyl and NH₂ stretching regions of a further 21 amides, all ortho substituted benzamides or heterocyclic carboxamides, are presented. The previous limits on the spectral ranges are thereby widened marginally, but in predictable ways. The NH stretching vibrations of ortho alkoxybenzamides are related to benzamide itself by a curve dependent on intramolecular hydrogen bonding, quantified by further elaboration of the Linnett equations to account for non-equivalence of the two NH bonds. Deuteration experiments enabled uncoupling of the NH bonds and assignment of bond strengths. Although it is widely believed that there is no coupling between XH and XD stretching frequencies, we show that the true NH frequency is raised by 2 cm⁻¹ as a result of deuterium coupling in NHD groups. The calculation of ND₂ wavenumbers from those of the fundamental and first overtone of the NH₂ values was carried out by 4 procedures. Better concordance with the antisymmetric vibration than the symmetric vibration was observed. The calculated shortening of the NH bonds on deuteration is 0.0035±0.0009 Å.</div></div>","PeriodicalId":23656,"journal":{"name":"Vibrational Spectroscopy","volume":"136 ","pages":"Article 103748"},"PeriodicalIF":2.7,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142756898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Use of a rugged mid-infrared spectrometer for in situ process analysis of liquids","authors":"Catriona McFarlan ,&nbsp;Andrew Parrott ,&nbsp;Jaclyn Dunn ,&nbsp;Jonathon Speed ,&nbsp;Dan Wood ,&nbsp;Alison Nordon","doi":"10.1016/j.vibspec.2024.103747","DOIUrl":"10.1016/j.vibspec.2024.103747","url":null,"abstract":"<div><div>The widespread application of mid-infrared (MIR) spectroscopy for process monitoring is currently limited by the poor transmission of MIR light through fibre optics. In this work, the performance of a novel and robust MIR spectrometer has been evaluated for practical deployment in a pilot plant or production environment. The spectrometer utilises a Sagnac interferometer design containing no moving parts and is directly attached to an attenuated total reflectance probe, eliminating the need for fibre optics. The quantitative performance of the spectrometer for the <em>in situ</em> analysis of ternary solvent mixtures was assessed. The predictions obtained by partial least squares were accurate (root mean square error of prediction of &lt; 1 % w/w) and comparable to those of a benchmark Michelson-based spectrometer with a fibre-coupled probe, which is more amenable to process development in a laboratory or pilot plant. Calibration transfer between the two spectrometers was performed using the spectral space transformation method to mimic the scenario of the scale-up of a process from the laboratory to pilot scale or from a pilot plant to production scale, where the two different MIR instruments might be deployed. The ability to perform <em>in situ</em> reaction monitoring with the robust Sagnac-based spectrometer was then demonstrated. Spectra acquired during an esterification reaction were resolved using multivariate curve resolution, to produce concentration profiles of each component. These results demonstrate the suitability of this rugged spectrometer for quantitative <em>in situ</em> monitoring of liquid processes, opening up new opportunities for process monitoring in the MIR region.</div></div>","PeriodicalId":23656,"journal":{"name":"Vibrational Spectroscopy","volume":"135 ","pages":"Article 103747"},"PeriodicalIF":2.7,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142652371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}