Article
Geochemistry & Geophysics
Lianfu Li, Xin Zhang, Zhendong Luan, Zengfeng Du, Shichuan Xi, Jun Yan
Summary: Raman spectroscopy analysis has been widely applied for quantifying components of hydrothermal fluids and fluid inclusions, with accuracy depending greatly on quantitative calibration models. This study found that temperature and salinity have significant effects on calibration models, with large errors in methane concentration estimation if salinity is not considered. The discrepancy between measured and predicted values highlights the impact of temperature and salinity on quantitative calibration models.
Article
Geosciences, Multidisciplinary
Yunlu Ma, Wei Yan, Qiang Sun, Xi Liu
Summary: Carbonate-bearing fluids are commonly found in various geological settings and are crucial in transporting elements like rare earth elements. Spectroscopic methods such as Raman spectroscopy and infrared spectroscopy show promise in quantifying carbonate concentrations in fluid inclusions, despite technical challenges. Calibration experiments using Raman and infrared spectra can potentially provide accurate quantification of carbonate concentrations and reveal the influence of K2CO3 concentration on the physical and chemical properties of the fluids.
GEOSCIENCE FRONTIERS
(2021)
Article
Geology
Christian Schmidt, Matthias Gottschalk, Rongqing Zhang, Jianjun Lu
Summary: The reconstruction of redox conditions during the formation of rocks and ore deposits remains a challenging task, but through analysis of tin ore samples from various locations, this study has revealed the oxygen fugacity conditions during tin ore formation. The results support the hypothesis that Sn(IV) prevailed over Sn(II) in the hydrothermal fluids, suggesting that redox reactions may play a smaller role than previously assumed in the formation models of hydrothermal tin deposits.
ORE GEOLOGY REVIEWS
(2021)
Article
Geosciences, Multidisciplinary
Youjun Tang, Yijun Wu, Ruyue Wang, Yahao Huang, Yifan Xue, Zhonghong Chen, Tianwu Xu, Ting Wang, Hongbo Li
Summary: This research investigates the pressure states and fluid evolution of two types of sandstone reservoirs in the Shahejie Formation. Different types of inclusions, including petroleum, CH4-bearing, and CO2-bearing, were discovered in quartz-hosted minerals. The properties of these inclusions were determined using quantitative Raman analysis and thermodynamic models. The study reveals the history of oil charging events and the pressure conditions of the reservoirs during different stages of oil generation.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Meng Zhang, Jingran Yang, Longkun Yang, Zhipeng Li
Summary: Surface-enhanced Raman scattering (SERS) is a powerful nondestructive analytical tool with high molecular sensitivity and specificity. In this work, we propose a robust calibration method by using a referenced measurement as the intensity standard, which overcomes the vulnerability of the calibration curve in SERS measurements and enables quantification analysis. The method utilizes an intensity reference that reflects the SERS substrate enhancement and avoids competing adsorption between target molecules and the internal standard. This SERS calibration method can accurately evaluate the concentration of target molecules and has the potential to be applied in quantitative SERS analysis.
Article
Chemistry, Multidisciplinary
Suyang Li, Junjie Chen, Wanbing Xu, Biao Sun, Jiechen Wu, Qiang Chen, Pei Liang
Summary: In this study, an efficient hybrid microfluidic chip was designed to prepare uniform Au@Ag core-shell nanoparticles, and DTNB was used as the internal standard tag molecule to prepare Au@DTNB@Ag for SERS detection. The experimental results showed that the homogeneous SERS substrate prepared using a microfluidic chip has potential for sensitive and reliable detection of environmental chemical contaminants.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Food Science & Technology
Yuanyin Jin, Chun Li, Zhengwei Huang, Ling Jiang
Summary: This study presents a method for simultaneous detection of low concentrations of potassium sorbate and lead in Tricholoma matsutake using SERS and FLU spectroscopy to ensure its safety. By combining multiple machine learning methods, an effective prediction model was established, providing a reference for food safety testing.
Article
Chemistry, Physical
Fatemeh Shoghi, Suraj Mal, Monique Tie, Antonella Badia, Richard Martel
Summary: In this study, a pH responsive optical probe comprised of Single-Walled Carbon Nanotubes (SWCNTs) in contact with a platinum redox couple (Pt-SWCNTs) was developed for accurate monitoring of pH in solutions. The probe demonstrated precise pH measurements across different ionic strengths, showing a strong Raman shift of the G-band as a function of pH. This work introduces an optical pH sensing scheme analogous to conventional pH sensors equipped with a built-in internal reference.
Article
Geochemistry & Geophysics
Shuai Cui, Weiqi Wang, Chuanbao Cheng, Ying Yao, Chaojian Qin, Qiang Sun
Summary: Raman spectroscopy is an efficient method for quantitatively measuring the carbon isotopic composition of CO2, but the low concentration of (CO2)-C-13 in natural samples can impact the accuracy and precision of the measurement. A method is proposed to improve the accuracy and precision of measured (CO2)-C-13/(CO2)-C-12 ratios.
Article
Chemistry, Multidisciplinary
Xiao-An Wang, Wei Shen, Binbin Zhou, Daoyang Yu, Xianghu Tang, Jinhuai Liu, Xingjiu Huang
Summary: The study introduced a 3D hotspot matrix SERS platform in water with the assistance of glycerol, monitoring dynamic signal changes of IS and target molecules with high sensitivity and stability. The consistent variation trends of IS and target molecules in the glycerol-assisted liquid film protection system enable reliable calibration of signal fluctuations.
Article
Geosciences, Multidisciplinary
Yahao Huang, Sheng He, Xiaowen Guo, Zhongrui Wu, Gangyi Zhai, Zhengqing Huang, Min Zhang, Qilin Xiao
Summary: The study of fracture veins in the Permian Leping Formation of the Pingle Depression on the Lower Yangtze Platform revealed the presence of various gas and petroleum inclusions, providing key evidence for understanding overpressure formation and evolution. Analysis of these inclusions' properties can help constrain the accumulation time sequence of paleo-fluid in shale veins.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Chemistry, Inorganic & Nuclear
H. Hajjaoui, Y. Kerroum, S. Aftimi, M. Nihorimbere, I. Warad, A. Guenbour, A. Bellaouchou, A. Zarrouk
Summary: The electrochemical behavior of 904L austenitic stainless steel in industrial phosphoric acid was investigated, focusing on the synergistic effect of HF and chloride and the concentration effect of HF. The presence of chlorides mainly affected the activation domain density, while the presence of both HF and chloride enhanced this effect. HF primarily affected the passive and trans-passive domains, resulting in the appearance of local corrosion. The coexistence of HF and Cl- further destabilized the passive film, indicating their synergistic effect on weakening the protective layers. EIS analysis revealed that HF promoted the dissolution of the outer layer and aggressively affected the resistance of the inner layer, leading to a loss of protective properties. These findings were confirmed by Raman and UV-Vis spectroscopy. Scanning electron microscopy analysis showed the appearance of a new type of large-shape pitting corrosion on the surface in the presence of HF.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Zhengfeng Guo, Honggang Gu, Mingsheng Fang, Lei Ye, Shiyuan Liu
Summary: Tellurene's giant in-plane optical anisotropy can be quantitatively evaluated using imaging Mueller matrix spectroscopic ellipsometry and first-principles calculations, and it is connected to its low-symmetry lattice structure and electrical anisotropy. This work provides a general and quantitative way to explore optical anisotropy and helps in understanding the relationship between lattice structure and optical anisotropy, thus promoting the development of polarization-sensitive optical applications.
Article
Construction & Building Technology
Arya Anuj Jee, Bulu Pradhan
Summary: This study explores the impact of sulfate ions on the corrosion behavior of reinforced concrete induced by chloride, showing that sulfate ions can slow down chloride ingress and enhance corrosion activity, particularly when allied with sodium cation. The findings also indicate that Portland pozzolana cement concrete performs well against surrounding rebar corrosion.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Construction & Building Technology
Arya Anuj Jee, Bulu Pradhan
Summary: This study evaluated the influence of chloride and sulfate ions on the corrosion of reinforced concrete. The presence of sulfate ions delayed the ingress of chloride ions and resulted in lower chloride content on the rebar surface. Sulfate ions allied with sodium cation had the greatest impact on corrosion activity. Concrete with fly ash exhibited excellent resistance to corrosion, with Portland pozzolana cement performing better than ordinary Portland cement. Ammonium nitrate had a significant effect on chloride content and corrosion current density on the rebar surface.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Energy & Fuels
Maowen Li, Zhuoheng Chen, Xiaoxiao Ma, Tingting Cao, Menghui Qian, Qigui Jiang, Guoliang Tao, Zhiming Li, Guoqi Song
INTERNATIONAL JOURNAL OF COAL GEOLOGY
(2019)
Article
Geochemistry & Geophysics
Xiaolin Wang, Ye Qiu, Jianjun Lu, I-Ming Chou, Wenlan Zhang, Guanglai Li, Wenxuan Hu, Zhen Li, Richen Zhong
Article
Geochemistry & Geophysics
Xiaolin Wang, Ye Qiu, I-Ming Chou, Rongqing Zhang, Guanglai Li, Richen Zhong
Article
Energy & Fuels
Maowen Li, Zhuoheng Chen, Menhui Qian, Xiaoxiao Ma, Qigui Jiang, Zhiming Li, Guoliang Tao, Shiqiang Wu
INTERNATIONAL JOURNAL OF COAL GEOLOGY
(2020)
Article
Energy & Fuels
Ye Qiu, Xiao-Lin Wang, Xian Liu, Jian Cao, Yi-Feng Liu, Bin-Bin Xi, Wan-Lu Gao
Article
Geology
Ye Qiu, Rongqing Zhang, I-Ming Chou, Xiaolin Wang, Wenxuan Hu, Wenlan Zhang, Jianjun Lu, Guanglai Li, Zhen Li
Summary: The study discovered boron-rich fluid inclusions using Raman spectroscopy, calculated relative molar scattering factors, and constructed the relationship between salinity and scattering factors in magmatic-hydrothermal deposits. The fluctuation of boron concentration during quartz crystal growth revealed episodic replenishment of fluids and highlighted the complexities in determining fluid composition in such systems. Raman spectroscopy offered a non-destructive and fast quantification method for fluid inclusions based on careful experimental calibrations.
ORE GEOLOGY REVIEWS
(2021)
Article
Geosciences, Multidisciplinary
Rong Chen, Feng Wang, Zhen Li, Noreen J. Evans, Hongde Chen, Xinshan Wei
Summary: Detrital minerals in Late Paleozoic sandstones of the Ordos Basin in North China record provenance shifts and transport processes, with significant implications for basin genesis and tectonics. The integration of detrital zircon U-Pb dating, Lu-Hf isotopic analyses, heavy mineral quantification, and paleocurrent analysis reveals two provenance shifts, suggesting changes in sediment sources and tectonic events during the early-middle Permian and late Carboniferous to late Permian periods. The varying Lu-Hf isotopic compositions of detrital zircons indicate different magma sources and ancient crustal components, while the enriched Hf isotopic signatures suggest contributions from the Yinshan orogenic belt and the southern margin of the North China Craton. The provenance shifts may have been triggered by uplift events in these tectonic zones.
JOURNAL OF ASIAN EARTH SCIENCES
(2021)
Article
Energy & Fuels
Yu Yu, Liangbiao Lin, Zhen Li, Hongde Chen
Summary: This study provides insights into the source and formation process of quartz cement in the Xu4 sandstones. The quartz cement is mainly derived from the dissolution of feldspar, the illitization of kaolinite and smectite, and the pressure dissolution of quartz grains. The precipitation of quartz cement is influenced by meteoric water, and the uplift of the basin affects the fluid flow and reactions.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Geosciences, Multidisciplinary
Z. Li, K. Rankenburg, L. S. Normore, N. J. Evans, B. I. A. McInnes, L. M. Dent, I. O. H. Fielding
Summary: This study demonstrates the practical application of in situ calcite U-Pb geochronology on core samples from the Olympic 1 well in the Canning Basin of Western Australia, providing precise age constraints on the depositional and diagenetic processes in both carbonate and clastic sedimentary rocks in basins worldwide.
AUSTRALIAN JOURNAL OF EARTH SCIENCES
(2023)
Article
Energy & Fuels
Qi-An Meng, Xue Wang, Qiu-Li Huo, Zhong-Liang Dong, Zhen Li, Svetlana G. Tessalina, Bryant D. Ware, Brent I. A. McInnes, Xiao-Lin Wang, Ting Liu, Li Zhang
Summary: This study applied Re-Os radiometric dating to lacustrine-sourced natural crude oils in the Hailar Basin in NE China, finding constraints on different hydrocarbon generation events. The method can provide direct temporal constraints on the evolution of petroleum systems.
Article
Geochemistry & Geophysics
Zhen-Min Ge, Xiao-Long Huang, Wei Xie, Tobias W. Hofig, Fan Yang, Yang Yu, S. Khogenkumar Singh
Summary: The mantle source composition of the nascent oceanic crust in the central part of the Gulf of California has been investigated using basaltic glass samples. These samples show trace element patterns similar to enriched mid-ocean ridge basalts, suggesting that the nascent oceanic crust in the Guaymas Basin might be generated through partial melting of a depleted mantle source metasomatized by subducted slab materials.
Article
Geochemistry & Geophysics
Jean-Michel Brazier, Katja E. Goetschl, Martin Dietzel, Vasileios Mavromatis
Summary: This study estimated the distribution coefficient of Zn2+ between calcite/aragonite and reactive fluids and found that the growth rate strongly influences D-Zn(2+) in both minerals. Additionally, a linear correlation was found between D-Zn(2+) and the saturation degree of the reactive fluid.
Article
Geochemistry & Geophysics
Ming Lei, Michele Lustrino, Jifeng Xu, Zhiqiang Kang, Zhengfu Guo, Jianlin Chen
Summary: This study presents a comprehensive geochronological, mineralogical, and geochemical analysis of olivine leucitites in the Maiga area of southern Tibet, suggesting that these rocks originate from a carbonated peridotite mantle source and highlighting the possibility of carbonates being recycled deep into the mantle during continental subduction.
Article
Geochemistry & Geophysics
Yuntao Ye, Xiaomei Wang, Huajian Wang, Haifeng Fan, Zhigang Chen, Qingjun Guo, Ziteng Wang, Chaodong Wu, Donald E. Canfield, Shuichang Zhang
Summary: Phosphorus is an essential element for life and its cycle in the ocean is closely connected with the carbon and oxygen cycles. The study of phosphate oxygen isotopes can provide insights into various reactions related to phosphorus. By analyzing carbonate fluorapatite samples from the Mesoproterozoic Era in North China, it was found that the oxygen isotope values were lower compared to modern samples, indicating a warmer climate during that time period and a potential reason for the scarcity of phosphorite.
Article
Geochemistry & Geophysics
Vincent Busigny, Oanez Lebeau, Didier Jezeduel, Carine Chaduteau, Sean Crowe, Magali Ader
Summary: This study conducted high-precision Mo isotope research on hydrothermal metal sulfides from a porphyry copper deposit in Southwest China and found that different stages of mineralization have distinct Mo isotope compositions, providing valuable insights into the behavior of Mo isotopes in magmatic-hydrothermal systems.
Article
Geochemistry & Geophysics
Min Ji, Xiao-Ying Gao, Yong-Fei Zheng, Bing Gong
Summary: The study examines the anatectic mechanisms in the Himalayan orogen, finding that pressure and temperature control the reaction, while water content mainly affects the solid-phase composition. Dehydration and hydration melting likely occur at different depths in the crust. This research provides important insights into the melting processes in collisional orogens.