Article
Chemistry, Analytical
Nilvan A. A. Silva, Ivo M. M. Raimundo
Summary: A simple and efficient method using laser-induced breakdown spectroscopy (LIBS) was developed to determine scaling ions in oilfield produced water, which could help prevent deposition in the pipelines of oil platforms. The optimal conditions were determined by evaluating instrumental parameters and sample preparation parameters. The results showed that data normalization minimized the matrix effect of highly saline waters, and the concentrations of scaling ions determined by LIBS were comparable to those obtained by ICP OES at a confidence level of 95%.
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
(2023)
Article
Biochemical Research Methods
Sadin Ozdemir, Ersin Kilinc, Fatih Sen, Mustafa Soylak
Summary: This study introduces an environmentally friendly and easy method for simultaneous preconcentration and determination of Cr(III), Hg(II) and Zn(II) using solid-phase extraction before analysis by inductively coupled plasma optical emission spectrometry. The developed procedure improved the sensitivities of ICP-OES for 60 fold for Cr(III), Hg(II) and Zn(II).
ANALYTICAL BIOCHEMISTRY
(2021)
Article
Environmental Sciences
Sema Bagdat, Feyzullah Tokay, Sahin Demirci, Selehattin Yilmaz, Nurettin Sahiner
Summary: Super porous polyethyleneimine (PEI) cryogels were used as adsorbents to remove Cd(II), Co(II), Cr(III), Ni(II), Pb(II), and Zn(II) from contaminated waters. The optimum pH value and contact time for removing the analytes were determined as 4.0 and 90 min, respectively. The adsorption capacities of the sorbent ranged from 19.88 to 24.39 mg/g for target metal ion solutions with a concentration of 50 mg/L. The adsorption kinetics followed the pseudo-second-order model, and the adsorption isotherms followed the Langmuir isotherm model. The PEI cryogels showed selectivity and tolerance to high concentrations of different ions and successfully removed the target analytes from industrial wastewater samples with removal rates ranging from 80.35% to 99.89%.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Chemistry, Physical
Bibek Dash, Sandeep K. Jena, Swagat S. Rath
Summary: This article explores the possibility of adsorption of Cr (III) and Cr (VI) ions on muscovite mica for the first time. Experimental and molecular modeling studies were conducted to compare the adsorption behaviors of both ions on the mineral. The experiments investigated the effects of different operating parameters on the adsorption of the metal ions, while simulations based on Density Functional Theory (DFT) were carried out to understand the adsorption mechanisms of various Cr (III) and Cr (VI) species at different pH levels on the muscovite (001) surface.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Analytical
Cheng Liu, Lei Jin, Jia-Qiang Yang, Fang-Zu Yang, Zhong-Qun Tian
Summary: The study demonstrates that both complexing agents and Fe(II) ions can decrease the cathodic polarization in the electro-reduction of Cr(III) ions, with Fe(II) ions being able to co-deposit with Cr(III) ions to form ferrochrome alloy. The substitution of a water molecule in [Cr(III)(H2O)6]3+ ion by oxalic acid or glycine creates an electrochemically active penta-aqua-Cr(III) coordination ion, leading to the induced-deposition mechanism of ferrochrome alloy. This process involves the reduction of Fe(II) ions to Fe crystal nuclei, followed by the growth of Cr and Fe atoms on the Fe nuclei to form the alloy.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Xiao Dan Sun, Jingjing Song, Zhangxin Duan, Dawei Feng, Zhenhua Tian, Dangge Gao
Summary: Porous structure design and reversible regulation of pore size are crucial for the removal of pollutants in water. In this study, micropores and switchable mesopores were constructed on MCM-41 to improve the adsorption performance of Cr(VI). The results showed that the modified sample had excellent adsorption ability and could efficiently remove Cr(VI). Moreover, the change in pore size was favorable for the cycling performance.
Article
Chemistry, Analytical
Huachao Che, Nengneng Li, Yulun Nie, Xike Tian, Yong Li, Liqiang Lu, Yongqiang Wang
Summary: A convenient method for simultaneous detection of As(III/V), Cr(III/VI), and Fe(II/III) has been developed using a sensor array. The array showed low detection limit and could achieve simultaneous qualitative and quantitative results for composite samples of multiple metal ions.
Article
Chemistry, Physical
Samy M. El-Megharbel, Reham Z. Hamza
Summary: Gallic acid metal complexes were prepared and characterized. Gallic acid acted as a bidentate ligand with various metal ions and formed complexes with different geometries and surface morphologies. The complexes exhibited good thermal properties and antioxidant activities.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Analytical
Nilvan A. Silva, Ivo M. Raimundo
Summary: Laser-induced breakdown spectroscopy (LIBS) was used to determine scaling ions in oilfield-produced water. The stability of plasma was verified using different optical setups, and a specific configuration was necessary for stable plasma. Results showed that only Ca(ii) and Sr(ii) ions could be determined accurately, while Mg(ii) ion was absent and Ba(ii) showed low sensitivity. Optimized conditions and parameters were established for reliable measurements.
ANALYTICAL METHODS
(2023)
Article
Chemistry, Physical
Abhishikta Chatterjee, Priyanka Chakraborty, Bidyapati Kumar, Corrado Rizzoli, Pinaki Mandal, Subrata K. Dey
Summary: A simple spectrophotometric method for detecting both trivalent and hexavalent forms of chromium using 3-amino-2-pyrazine carboxylic acid (APC) is reported. A new mononuclear complex has been synthesized and characterized by elemental analysis and IR studies. The optical sensing properties of APC for metal ions, particularly Cr3+, have been investigated.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Electrochemistry
Xiang-Hong Lu, Xin-Xin Zhang, Kaifeng Zhao, Zuoming Chen, Jian Li, Chen Wang
Summary: The corrosion behavior of 5Cr, 9Cr and 13Cr steels in CO2 corrosion environment was studied through high temperature and high pressure weight loss test and electrochemical test, with J55 material as comparison. Scanning electron microscopy analyzed the morphology of corrosion products. The corrosion resistance mechanism of Cr-containing steel was analyzed from the perspective of structural stability. The results show that the Cr-containing alloy steel has lower uniform corrosion rate and higher CO2 corrosion resistance compared to J55 steel.
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2023)
Article
Biochemistry & Molecular Biology
Yanan Jia, Nannan Li, Qirou Wang, Jingna Zhou, Junyu Liu, Min Zhang, Chengwei He, Haixia Chen
Summary: Fe, Zn, and Cr complexes with corn silk polysaccharide (CSP) were successfully synthesized and characterized in this study. CSP-Zn showed higher antioxidant activities and inhibition effects on alpha-glucosidase compared to CSP, suggesting it as a potential candidate for developing functional foods for antidiabetics. The chelation of Fe (III), Zn (II), and Cr (III) could alter the properties and activities of CSP.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Biochemistry & Molecular Biology
Qi-Jin Jiang, Po-Min Chuang, Jing-Yun Wu
Summary: Two Cd(II) based coordination polymers with different structures and fluorescence properties were synthesized by hydro(solvo)thermal methods. Both compounds showed good water stability, high thermal stability, and exhibited fluorescence properties for metal ion sensing.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Engineering, Chemical
Ying Yang, Xiang Cao, Zhenping Ma, Guohao Wu, Liangliang Zheng, Yuanyuan Zhang
Summary: SBA-15 mesoporous silica-bearing branched amine was utilized as an adsorbent for the efficient removal of Cu(II) and Cr(III) ions from aqueous solutions. The experimental results showed that the nanoabsorbent exhibited high adsorption capacities, excellent stability, and easy regeneration, making it a promising candidate for the adsorption and recovery of heavy metal ions in aqueous environments.
DESALINATION AND WATER TREATMENT
(2021)
Article
Chemistry, Physical
Sung Soo Park, Sang-Wook Chu, Liyi Shi, Shuai Yuan, Chang-Sik Ha
Summary: Crystalline walled SBA-15 with large pore sizes were prepared using alkali and alkali earth metal ions (Na+, Li+, K+ and Ca2+). Different metal ions led to different crystalline SiO2 structures and pore size variations in the SBA-15. At 700 degrees C, SBA-15 with Si/Na+ ratios from 2.1 to 40 exhibited both cristobalite and quartz structures in the pore walls.
Article
Chemistry, Multidisciplinary
Wafa A. Bawazir, Maymoona A. Al-Mahmood, Rawan S. Almalki, Ghadi F. Alofi, Raghad S. Alharbi, Zoya Zaheer
Summary: This study investigates the interaction between sulfathiazole and three types of surfactants using UV-visible spectroscopy and conductivity measurements. The results show that the critical micelle concentration of cationic and anionic surfactants decreases with increasing sulfathiazole concentration, while the interaction with non-ionic surfactant is weak.
ARABIAN JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Musaad K. Aleid, Khalid N. Alharbi, Mona A. Aljufareen, Areej S. Aloliwi, Alhanouf K. Almutairi, Rahaf S. Alsaif, Nada K. Alshayeb, Mohammed S. Almoiqli
Summary: This study assessed the levels of trihalomethane compounds in the water network of Riyadh city and identified the factors influencing their formation. The concentrations of trihalomethane compounds were within the permissible limits, indicating the water's safety for human consumption. The presence of bromide ions, organic carbon, free chlorine, and pH values were found to affect trihalomethane formation.
ARABIAN JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Said Arhzaf, Jamal Houssaini, Mohammed Naciri Bennani, Marwa Alaqarbeh, Mohammed Bouachrine
Summary: The study shows that Mg-Al hydrotalcite catalysts intercalated with acetate and carbonate anions exhibit superior catalytic activity in the aldol condensation reaction between furfural and acetone. The optimal reaction conditions are at 90 degrees C for 2 hours, achieving conversion rates of over 98% with high selectivity towards F2A for the acetate catalyst.
ARABIAN JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Uyen-Chi Nguyen Le, Ngoc Xuan Dat Mai, Kieu-Minh Le, Hoang Anh Vu, Huynh-Nhu Thi Tran, Tan Le Hoang Doan
Summary: This study aimed to enhance the bioavailability of rosmarinic acid, a bioactive compound with high anticancer activity, by encapsulating it in tetrasulfide-based porous organosilica nanoparticles. The synthesized nanoparticles were small in size and had a high surface area and an average pore diameter. The nanoparticles showed effective accumulation in cancer cells without toxicity to normal cells. Treatment with rosmarinic acid-containing nanoparticles resulted in significant cell death in cancer cells. Overall, these findings suggest that the synthesized nanoparticles can enhance the pharmacological effects of rosmarinic acid.
ARABIAN JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Jiamin Qi, Hengxi Zhu, Tianyu Yang, Xingyuan Wang, Zixuan Wang, Xiaoli Lei, Bin Li, Wenmin Qian
Summary: This study synthesized a novel iron-biochar adsorbent using the iron content in red mud to remove heavy metals from wastewater. The adsorbent showed excellent removal efficiency and sustainability. This method addresses both industrial waste recovery and heavy metal adsorption issues.
ARABIAN JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Bo Yi, Li Zhang, Haiyang Zhou
Summary: Plasma protein binding plays a crucial role in the pharmacokinetics and pharmacodynamics of therapeutic bioactive materials. In this study, the interaction of nordentatin, a member of coumarins, with human alpha-1 acid glycoprotein (AGP) was investigated, and the anticancer potency of nordentatin against human colorectal cancer cells was evaluated. The results showed that nordentatin binds to AGP through a static quenching mechanism and exhibits inhibitory effects on the growth of HCT-116 cells by increasing intracellular ROS and [Ca2+] levels and triggering apoptosis-related gene overexpression. Therefore, nordentatin could be a promising plant-based therapy for colorectal cancer.
ARABIAN JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Qiming Pang, Cui Wang, Bangtao Li, Suli Zhang, Jiaoyang Li, Shuo Gu, Xueyu Shi
Summary: This study evaluated the effects of resveratrol loaded in copolymer nanoparticles on cerebral ischemia/reperfusion (I/R) injury in rats. The results showed that RES.CP.NPs could have neuroprotective effects through their antioxidant and anti-inflammatory activities, leading to improved neurological disability scores and decreased oxidative stress levels.
ARABIAN JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Maryam Rachmawati Sumitra, Lung-Ching Chen, Wei-Chen Tsai, Muhamad Ansar, Bashir Lawal, Ntlotlang Mokgautsi, Jih-Hwa Guh, Alexander T. H. Wu, Hsu-Shan Huang
Summary: Tetraheterocyclic compounds derived from natural sources and contemporary pharmaceuticals have shown promise as multitarget therapeutic agents. In this study, a series of synthesized compounds were evaluated for their potential in breast cancer treatment. Compounds 18 and 20 demonstrated significant antiproliferative activity against breast cancer cell lines and their mode of action was revealed through molecular docking simulations.
ARABIAN JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Mohammad Khosravani, Mohsen Dehghani Ghanatghestani, Farid Moeinpour, Hossein Parvaresh
Summary: The aim of removing Pb(II) from water is to minimize the potential harm posed by toxic metals to both human health and the environment. A covalent organic framework adsorbent called TFPOTDB-SO3H was developed with excellent properties such as high repeatability, selectivity, and easy solid-liquid separation. The adsorbent showed impressive capability of adsorbing Pb(II) and effective removal of it from a solution with various ions, suggesting its potential for effectively adsorbing and removing Pb(II) heavy metal ions from wastewater.
ARABIAN JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Ashraf H. Farha, Mohamed S. Shams, Hasna A. Alali, Zakia H. Alhashem, Shehab A. Mansour, Shrouq H. Aleithan, Ragab A. Elsad
Summary: The current study examines the dielectric and thermal properties of transformer oil incorporated with Mn0.5 Zn0.5 Fe2O4 nanoparticles. The results show that the addition of Mn-Zn ferrite NPs improves the dielectric constant, dissipation factor, AC breakdown voltage, and convective heat transfer of the nanofluid.
ARABIAN JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Limin Hou, Zongpei Jiang, Minqi Ye, Xueyan Sun, Kexin Liu, Yifan Zhu, Xiaoyu Wang, Liangzhu Chen, Ruiheng Gu, Binghu Fang
Summary: The excessive accumulation of antibiotic residue in animal-derived foods poses a threat to health. Therefore, it is necessary to establish a rapid, simple, effective, safe, and highly sensitive method for detecting lincomycin residues. By using a pre-column derivatization method on high-performance liquid chromatography equipped with ultraviolet, the UV absorption of lincomycin is improved, allowing for detection and quantification.
ARABIAN JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Kun Tang, Xin-Xin Wang, Jin-Jin Zhao, Ning Ren, Jian-Jun Zhang
Summary: This study reports the synthesis, crystal structures, and thermal degradation properties of three new rare earth coordination compounds. Compounds 1-3 exhibit binuclear structures which can form chain-like structures via hydrogen bonding. Compound 2 shows potential application value in the orange-red luminescence region.
ARABIAN JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Seoyoun Yang, Eunbi Yu, See-Hyoung Park, Sae Woong Oh, Kitae Kwon, Su Bin Han, Soo Hyun Kang, Jung Hyun Lee, Heejun Ha, Minkyung Song, Jae Youl Cho, Jongsung Lee
Summary: This study investigated the effects of blue light on the hypodermis and found that it has antiadipogenic properties by reducing lipid accumulation and downregulating the expression of adipogenic genes. Blue light also increased the phosphorylation of PPAR gamma and TRPV1, suggesting its anti-adipogenic effect through these signaling pathways.
ARABIAN JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Abdul Nasir, Abdul Waheed Khan, Hamid Rafiq Khattak, Abdus Samad, Sami Ullah, Haroon Khan, Muhammad Faheem, Qian Bai
Summary: This study evaluated the effects of isoxazolone derivatives on cisplatin-induced neuropathy in a rat model. The results showed that isoxazolone derivatives effectively reversed mechanical allodynia, similar to the known therapeutic agent pregabalin. Molecular docking analysis indicated that isoxazolone derivatives have strong binding affinity for relevant receptors and potential inhibitory activity against relevant signaling pathways. This study has innovative implications for the treatment of cisplatin-induced neuropathic pain.
ARABIAN JOURNAL OF CHEMISTRY
(2024)
Article
Chemistry, Multidisciplinary
Shahid Wahab, Haroon Muhammad Ali, Maham Khan, Tariq Khan, Chandran Krishnaraj, Soon-Il Yun
Summary: In this study, we synthesized chitosan nanoparticles, silver nanoparticles, and chitosan/silver nanocomposites using aqueous ginger extract as a green approach. These nanomaterials showed significant antibacterial properties and low toxicity. Furthermore, the nanomaterials conjugated with tobramycin demonstrated enhanced antibacterial efficacy and exhibited interactions with Pseudomonas aeruginosa.
ARABIAN JOURNAL OF CHEMISTRY
(2024)