Degree-Based Entropy for a Non-Kekulean Benzenoid Graph by Md. Ashraful Alam, Muhammad Usman Ghani, Muhammad Kamran, Muhammad Shazib Hameed, Riaz Hussain Khan, A. Q. Baig

“…Tessellations of kekulenes and cycloarenes have a lot of potential as nanomolecular belts for trapping and transporting heavy metal ions and chloride ions because they have the best electronic properties and pore sizes. …”
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Comparison of Electrospray Ionization and Atmospheric Chemical Ionization Coupled with the Liquid Chromatography-Tandem Mass Spectrometry for the Analysis of Cholesteryl Esters by Hae-Rim Lee, Sunil Kochhar, Soon-Mi Shim

“…The retention time (RT), signal intensity, protonated ion, and product ion of CEs were compared between ESI and APCI. …”
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Effects of Temperature on the Microstructure and Magnetic Property of Cr-Doped ZnO DMS Prepared by Hydrothermal Route Assisted by Pulsed Magnetic Fields by Shiwei Wang, Min Zhong, Cong Liu, Ying Li, Mingyuan Zhu, Hongming Jin, Yemin Hu

“…Results demonstrated that Zn ions in the ZnO crystal lattice were partially displaced by Chromium (III) ions. …”
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Removal of iron and manganese from acidic aqueous solution by pyrite and pyrite-calcium sulfite by Xu Zhang, Yajing Wang, Gesang Nima, Ziqian Wang, Caifeng Huang

“…After the process of iron removal, calcium sulfite and air were used to remove manganese ions from the solution, and the efficiency of manganese ion removal was larger than 75% in 240 min (with less than 0.05 g/L Fe and 0.5 g/L Mn in the solution). …”
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Optical Properties of Er3+-Doped CdIn2O4 and CdIn2O4 Crystals by Tae Hwan Bang, Jong Wuk Kang, Jin Jeong

“…The photoluminescence (PL) spectra of CdIn2O4:Er3+ acquired in the wavelength range of 630–700 nm at 294 K showed peaks in the region of 651–686 nm and eight sharp emission peaks due to the Er3+ ions. These PL peaks were attributed to radiative transitions between the split electron energy levels of the Er3+ ions occupying the In3+ sites of the CdIn2O4 host lattice.…”
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TRIPHENYLTIN (IV) GLUTARATES: SYNTHESIS, FT-IR AND MÖSSBAUER STUDIES by MOUHAMADOU SEMBENE BOYE, MOUHAMADOU BIRAME DIOP, MODOU SARR, AMINATA DIASSE-SARR, LIBASSE DIOP, ALAIN WATTIAUX

“…Overall, the spectra studies sheew existence of several caracteristic bands such as υ (C=O), υ (CO2–), υ (Sn–O), υ (Sn–Cl), vibrations of glutarate ions, and the intense doublet showing the presence of phenyl groups. …”
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Structure and quantification of Ce3+/Ce4+ and stability analysis of basaltic glasses for the immobilization of simulated tetravalent amines by Qin Tong, Song Liu, Jun Liang, Qi Zhang, Meiying Liao

“…XPS analysis revealed that approximately half of the Ce4+ ions in the basaltic glass doped with CeO2 were reduced to Ce3+ ions. …”
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Integrated Approach to Investigate the Effect of Leachate on Groundwater around the Ikot Ekpene Dumpsite in Akwa Ibom State, Southeastern Nigeria by N. J. George, A. I. Ubom, J. I. Ibanga

“…The correlation indices of the ion pairs show no significant effect on the paired ions, indicating that the significant value of some of the individual ions is not geologic but due to precipitation from the leachate residue. …”
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Viscosity model for aluminosilicate melt by Zhang G.H., Chou K.C.

“…A simple method is proposed to calculate the numbers of different types of oxygen ions classified by the different cations they bonded with, which is used to characterize the influence of composition on viscosity. …”
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A New Spectrophotometric Reagent for Fe(III): 2-(2,3-Dihydroxy-4-oxocyclobut-2-enylidene) Hydrozinecarbothiamide and Its Application in Real Samples by Mahboubeh Saeidi, Reihaneh Aboutalebi, Ali Darehkordi

“…The effects of foreign ions on the determination of Fe(III) were investigated in order to assess the selectivity of the method. …”
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Spectroscopic Study on the Species and Color Differences of Gem-Quality Red Garnets from Malawi by Ming Li

“…They both contained the transition metal ions Fe2+, Mn2+, Fe3+, and Cr3+, with Fe2+ and Mn2+ occupying crystal site A and Fe3+ and Cr3+ occupying crystal site B. …”
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Biosorption of Cu2+ onto Biyological Waste Nitrification Organisms by Şükrü Aslan, Uğur Savaş Topçu

“…The biosorption of Cu2+ ions from aqueous solutions onto the dry waste nitrification organisms (DWNO) which were enriched in the laboratory was investigated in batch experimental system with respect to the temperature, initial Cu2+ concentrations, pH, and biosorbent doses. …”
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Personal portable self‐powered drinking water treatment device by Saeid Maghami, Moslem Tavakol

“…Abstract The presence of pathogenic microorganisms and excessive amounts of magnesium, nitrate and nitrite ions and also heavy metals in surface and underground water sources such as rivers and wells affect human health when used as drinking water. …”
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Characterization of kaolin dispersion using acoustic and electroacoustic spectroscopy by Dohnalová Ž., Svoboda L., Šulcová P.

“…Such behavior is explained by the exchange of K+ ions with H+ ions in the system. When the electrolyte is formed by divalent cations such as Mg2+ or Ca2+, the values of zeta potential become less negative than zeta potential of kaolin in water. …”
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Characterization of polyethylene and polyurethane microplastics and their adsorption behavior on Cu2+ and Fe3+ in environmental matrices by Ilaria Zanoni, Lucia Briccolani, Lara Faccani, Magda Blosi, Simona Ortelli, Matteo Crosera, Giovanna Marussi, Stefania Albonetti, Anna Luisa Costa

“…We observed selective adsorption for Cu2⁺ ions, which was both medium-dependent (more ions adsorbed in Elendt M7) and plastic-dependent, with PU showing a stronger affinity for Cu2⁺ in MilliQ and Egg water. …”
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Development of High-performance Proton Transfer Reaction Time-of-Flight Mass Spectrometer by Chun-guang XIE, Ji-yang ZHANG, Tong YANG, Yu-liang HUANG, Shu-guang XIE, Hui ZHU, Jing-xuan SUN, Ping CHENG

“…Proton transfer reaction ionization is one of the typical methods of “soft” ionization techniques, which generally takes water and hydronium ions as parent ions, and the objects which have higher proton affinity than water can be ionized. …”
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Chemical Composition Characteristics and Source Apportionment of PM2.5 in Ceramic Industrial Base during Winter by Xiang Tu, Xiaozhen Fang, Hansun Fang, Changlin Ye, Zugen Liu, Xuehui Jia, Dan He, Jinliang Wang, Hong Huang, Changwei Zou, Chenglong Yu

“…Water-soluble ions and total carbon contributed about 48.7% and 13.9% of the PM2.5 mass, respectively. …”
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Determination of Iodate in Food, Environmental, and Biological Samples after Solid-Phase Extraction with Ni-Al-Zr Ternary Layered Double Hydroxide as a Nanosorbent by Hossein Abdolmohammad-Zadeh, Keyvan Tavarid, Zeynab Talleb

“…An indirect method was used for monitoring of the extracted iodate ions. The method is based on the reaction of the iodate with iodide in acidic solution to produce iodine, which can be spectrophotometrically monitored at 352 nm. …”
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Changes of pH in β-Lactoglobulin and β-Casein Solutions during High Pressure Treatment by Karsten Olsen, Bo B. Jespersen, Vibeke Orlien

“…The initial decrease is suggested to be caused by the deprotonation of histidine, while the increase is suggested to result from an increase of hydroxide ions due to the loss of tertiary structure. The change in pH of the β-casein solution displayed an almost linear increasing pressure dependency up to a pH of 7.7 at 500 MPa. …”
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Synthesis and Characterization of Iron Oxide Nanoparticles and Applications in the Removal of Heavy Metals from Industrial Wastewater by Zuolian Cheng, Annie Lai Kuan Tan, Yong Tao, Dan Shan, Kok Eng Ting, Xi Jiang Yin

“…Batch experiments were carried out for the removal of Pb2+ ions from aqueous solutions by maghemite nanoparticles. …”
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