Article
Green & Sustainable Science & Technology
Xin Zhang, Jiyun Tang, Juan Chen, Zhanlong Song
Summary: In this study, the weight loss properties of waste tires (WT) were investigated using TG-MS test. WT pyrolysis under simulated coal-fired flue gas was conducted, and the transformation characteristics of sulfur (S) and zinc (Zn) during WT pyrolysis were analyzed. The results showed that the weight loss of WT occurred in three stages, and the principal sulfur-containing gas emitted was H2S. The temperature had a significant impact on the enrichment of S and Zn in the solid product, and the addition of MgO promoted the enrichment of Zn, while Fe2O3 resulted in the highest sulfur fixation. The research results can provide theoretical references for pollutant control technologies.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Energy & Fuels
Xin Zhang, Jiyun Tang, Juan Chen, Zhanlong Song, Yong Dong
Summary: During the co-pyrolysis of waste tires (WT) and waste plastic (PVC), volatile ZnCl2 is produced due to the presence of ZnO in WT and Cl in PVC. The addition of PVC reduces the relative enrichment of Zn in the solid product by 42.4% at 850 degrees C. CaO and Al2O3 facilitate Zn release, while MgO and Fe2O3 have enrichment effects on Zn. The adsorption mechanisms of metal oxides to ZnCl2 were investigated using density functional theory, revealing that ZnCl2 is physisorbed by Al2O3 and chemisorbed by CaO, Fe2O3, and MgO.
Article
Multidisciplinary Sciences
Paolo D'Imporzano, Katrien Keune, Janne M. Koornneef, Erma Hermens, Petria Noble, A. L. S. Vandivere, Gareth R. Davies
Summary: This study shows that lead isotopes in lead white pigment can be used as an additional diagnostic tool to determine the production time of 17th century Dutch paintings. Analysis of 77 well-dated paintings from 27 different Dutch artists reveals significant changes in the source of lead used in lead white at the start, middle, and end of the 17th century.
Article
Chemistry, Analytical
Paolo D'imporzano, Katarina Batur, Katrien Keune, Janne M. Koornneef, Erma Hermens, Petria Noble, Kirsten Van Zuilen, Gareth R. Davies
Summary: The study found that there is isotopic heterogeneity in lead white within individual paintings, while pure pigment from 16th-century Venetian lead white is isotopically homogeneous. The evolution from pure pigment to artwork is associated with an increase in the heterogeneity of lead isotope ratios.
MICROCHEMICAL JOURNAL
(2021)
Article
Engineering, Civil
Isaac L. Howard, Jessica V. Lewis, Ashley S. Carey, Ben C. Cox
Summary: In recent years, there has been significant interest in wheel tracking of asphalt mixtures. This paper evaluates the feasibility of standardizing a rubber-tire wheel tracking protocol that can distinguish between rutting and moisture damage. The authors compare a rubber-tire wheel tracker with the well-known dry wheel tracking test, and propose initial failure criteria for the rubber-tire wheel tracking method.
TRANSPORTATION RESEARCH RECORD
(2023)
Article
Geochemistry & Geophysics
Ying-Kui Xu, Zhi Li, Shi-Jie Li, Ze-Zhou Wang, De-Liang Wang, Yan Fan, Xiong-Yao Li, Jian-Zhong Liu, Dan Zhu
Summary: This study investigates the behavior of potassium (K) and zinc (Zn) during impacts by analyzing the compositions and isotopic values of shock melt pockets (SMPs) and unmelted parts of ordinary chondrites. The results show that K is enriched and Zn is depleted in SMPs compared to the bulk rocks, and there is isotopic fractionation observed for both elements. This study enhances our understanding of MVEs and their distribution in the solar system.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2023)
Article
Geochemistry & Geophysics
Bleuenn Gueguen, Olivier Rouxel, Yves Fouquet
Summary: This study presents a high-resolution record of Cu and Zn isotopes in four Fe-Mn crusts from the North and South Pacific oceans. The results suggest that Cu and Zn in these crusts are mainly derived from seawater precipitation and can reflect the metal isotope composition of deep seawater. Cu and Zn isotopes show different patterns between the North and South Pacific Oceans but exhibit similar temporal evolution within each geographical area.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2022)
Article
Nutrition & Dietetics
Julie M. Long, Afsana Mim Khandaker, Rahvia Alam Sthity, Jamie E. Westcott, Andrei Matveev, Robert E. Black, Janet C. King, Kazi Munisul Islam, Shams El Arifeen, Tahmeed Ahmed, M. Munirul Islam, Christine M. McDonald, Nancy F. Krebs
Summary: Observational research suggests that the size of the exchangeable zinc pool (EZP) may be a reliable biomarker for zinc status. This study compared the effects of different zinc supplementation methods on EZP size in children and evaluated the impact of systemic inflammation on EZP size.
Article
Chemistry, Multidisciplinary
M. M. Zeidan, S. Abedrabbo
Summary: Modified Am-241-Be neutron beams can change the optical properties of zinc oxide (ZnO) photoluminescence (PL) spectra by transmuting zinc (Zn) into gallium (Ga) after irradiation. This study investigates the time required by slow neutron irradiation to register the transmutation of Zn into Ga. Two series of samples from different suppliers (TEW Tokyo Denpa Co. Ltd., Tokyo, Japan and MTI corporation, China) are irradiated for 6, 12, 18, and 24 days on the Zn-polar face of each sample to determine the relationship between irradiation intensity and transmutation.
Article
Geology
Peter Matt, William H. Peck, Ryan Mathur, Mary R. Hurtgen, Linda Godfrey
Summary: This study reports the δZn-66 values of high temperature metamorphic zinc oxide and silicate minerals from the Franklin, NJ mining district. The results suggest that these minerals have different δZn-66 values and are isotopically heavier than sphalerite. In addition, the study also found that the δC-13 values of calcite samples decrease with distance, while the δO-18 values vary on different transects.
ORE GEOLOGY REVIEWS
(2022)
Article
Environmental Sciences
Zhenghua Tao, Qingjun Guo, Rongfei Wei, Xinyuan Dong, Xiaokun Han, Zhaobing Guo
Summary: The study investigated the sources of atmospheric lead in Beijing, identifying anthropogenic sources contributing approximately 85% annually, with natural sources accounting for the rest of 15%. Natural sources contributed around 9.4% in spring, 29.7% in summer, 16.0% in autumn, and 6.1% in winter, indicating a potentially higher contribution of natural sources on clear days.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Geochemistry & Geophysics
Yuan-Ru Qu, Sheng-Ao Liu, Huaichun Wu, Meng-Lun Li, Heng-Ci Tian
Summary: This paper demonstrates that zinc and magnesium isotopes can serve as tracers to track the dissolution process of carbonates. Through comparative studies on sediment samples from the South China Sea and the Philippine Sea, the authors find that dissolved carbonates have distinct isotopic compositions compared to silicate residues. This finding provides insights into the fate of carbonates in the mantle and their role in global carbon cycling.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2022)
Article
Environmental Sciences
Linda van den Heever, Marlina A. Elburg, Linda Iaccheri, Vinny Naidoo, Henriette Ueckermann, Grant Bybee, Hanneline A. Smit-Robinson, Melissa A. Whitecross, Andrew E. McKechnie
Summary: The major source of elevated lead levels in white-backed vulture chicks at Dronfield Nature Reserve, South Africa, is fragments of lead-based ammunition embedded in the carrion fed to them by their parents.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Review
Geochemistry & Geophysics
Bernd Lehmann, Jan Pasava, Ondrej Sebek, Alexandre Andronikov, Robert Frei, Lingang Xu, Jingwen Mao
Summary: Early Cambrian black shales on the Yangtze Platform host a regionally distributed highly metalliferous sulfide-rich carbonaceous unit, and the extreme metal enrichment can be understood as due to a process chain.
MINERALIUM DEPOSITA
(2022)
Article
Multidisciplinary Sciences
Joan De Vera, Priyanka Chandan, Paulina Pinedo-Gonzalez, Seth G. John, Sarah L. Jackson, Jay T. Cullen, Manuel Colombo, Kristin J. Orians, Bridget A. Bergquist
Summary: The study reveals that anthropogenic lead is widespread and dominant in the western Arctic Ocean, with significant contributions from historic aerosol lead deposited from Europe and Russia during the 20th century. The remobilization of this lead, especially in water layers with higher concentrations, highlights the impact of human activities and environmental changes on the Arctic. Detecting 20th century Eurasian lead in deep water also provides insights into ventilation ages and helps constrain sources of contaminants in Arctic seawater.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)