Interfacial tension reduction using nitrogen graphene quantum dots with various precursors, molar ratios, and synthesis durations for enhanced oil recovery by Younes Gholamzadeh, Abdolhossein Hemmati-Sarapardeh, Mohammad Sharifi

“…It has been identified that the presence of more polar atomic bonds on the surfaces of GQDs decreases the ability of GQDs to reduce IFT. …”
Get full text

Ecological and human health implications of mercury contamination in the coastal water by A. Mallongi, A.U. Rauf, R.D.P. Astuti, S. Palutturi, H. Ishak

“…Therefore, this study aims to 1) assess the ecological and human health risk of mercury contamination in coastal water; 2) analyze the effectiveness of polymer sulfur as an absorbent for mercury.METHODS: A total of fifteen water samples were obtained from the coastal areas of Makassar and were analyzed using cold vapor atomic absorption spectrophotometry. Ecological and human health risks were assessed using established assessment methods by the United States Environmental Protection Agency. …”
Get full text

Crotalaria madurensis flavonol glycosides’ antibacterial activity against Staphylococcus aureus by Hala Sh. Mohammed, Salwa A. Abu El Wafa, Mona H. Ibrahim, Rasha Mohammad Fathy, Noha A. Seif-Eldein

Get full text

Sensitivity of global solar irradiance to transposition models: Assessing risks associated with model discrepancies by Yasser F. Nassar, Hala J. El-Khozondar, Mohamed M. Khaleel, Abdussalam A. Ahmed, Abdulgader H. Alsharif, Monaem Elmnifi, Mark Amoah Nyasapoh

Get full text

Impact of chlorine dioxide and chlorhexidine mouthwashes on friction and surface roughness of orthodontic stainless steel wires: an in-vitro comparative study [version 2; peer revi... by Arun S Urala, Shivani Apte, Divya S

“…The remaining 4 specimens from each group were sent for surface morphology evaluation using an atomic force microscope. Results Friction resistance evaluation for the archwires revealed a mean friction of 0.011 ± 0.0056 in Group A, 0.015 ± 0.0052 in Group B, and 0.010 ± 0.0067 in Group C. …”
Get full text

Characterization and quantification of iron species in the banded iron formations (BIFs) in China Craton to explore the potential for H2 production using XRD and Mössbauer spectros... by Hyo-Im Kim, Inkyeong Moon, Minkyeong Kim, Hyuk Jun Lee, Hyunkyung Choi, Young Rang Uhm, Lei Liu, Jonguk Kim, Wonnyon Kim

“…We estimated H₂ production potential by calculating the relative fraction of Fe2+ in magnetite relative to total number of iron atoms in the bulk samples from the Mössbauer results. …”
Get full text

Potentially Toxic Elements’ Accumulation and Health Risk of Consuming Vegetables Cultivated along the Accra-Tema Motorway by Ebenezer Boahen, Benedicta Yayra Fosu-Mensah, Samuel S. Koranteng, Daniel A. Darko, Gerald Obuobi, Michael Mensah

“…Vegetable samples were digested using an automated digester, Behrotest model K8, and levels of potentially toxic elements were analyzed using an atomic absorption spectrophotometer (AAS) PinAAcle 900T. …”
Get full text

Chemometric Methods—A Valuable Tool for Investigating the Interactions Between Antifungal Drugs (Including Antifungal Antibiotics) and Food by Agnieszka Wiesner-Kiełczewska, Paweł Zagrodzki, Alicja Gawalska, Paweł Paśko

“…We obtained six significant positive and negative correlations between the descriptors related to atoms and the postprandial ∆T_max. Conclusions: The PLS method is valuable for investigating interactions between antifungal drugs (including antifungal antibiotics) and food. …”
Get full text

Determination of the Selected Heavy Metal Content and Its Associated Health Risks in Selected Vegetables Marketed in Bahir Dar Town, Northwest Ethiopia by Biset Asrade, Gebremariam Ketema

“…The concentrations of copper (Cu), chromium (Cr), cadmium (Cd), and lead (Pb) were determined, and their health risks were estimated using estimated daily intake (EDI), target hazard quotient (THQ), hazard index (HI), and target cancer risk (TCR) for selected heavy metals by using flame atomic absorption spectrometry. A total of 5 kg composite samples for each type of vegetable were collected by simple random sampling from an open market in Bahir Dar town, Northwest Ethiopia, and subsamples (1.25 kg) were digested via the wet digestion method. …”
Get full text

Radioisotope and Metal Concentrations in Borehole Water Samples of Umuahia and Umudike, Nigeria by J.C. Nnaji, O.U. Igwe, K.M. Onyedim, P. Okafor

“…Metal concentrations were analyzed with Graphite furnace Atomic Absorption Spectrophotometer (AAS) while radioisotopes were determined with gamma ray spectrometry. …”
Get full text

Assessment of Health Risks in Wheat Crop Irrigated by Manka Canal, Dera Ghazi Khan, Pakistan by Muhammad Anwar ul Hassan, Sabiha Javied, Umair Riaz, Muneera A. Saleh, Khalid H. Alamer, Naila Siddique, Ambreen Aslam, Nabeela Noor, Qamar uz Zaman

“…The collected samples were analyzed for heavy metals (Cd, Cu, Fe, Mn, Ni, Pb, and Zn) using a flame atomic absorption spectrometer (FAAS). Results. The significant findings of the study revealed that the concentration of heavy metals in most of the collected samples of soil, water, and wheat was above the World Health Organization (WHO) permissible limits. …”
Get full text

Effect of Essential Microelements on Proteomic Profile of Lamb Muscle Tissue Protein by Tatiana M. Giro, Andrey V. Kulikovsky, Anna V. Giro

“…The microelement composition of lamb muscle tissue underwent atomic absorption spectrometry. The proteomic profile was identified using O'Farrell’s two-dimensional gel electrophoresis (2-DE) with isoelectrofocusing in ampholine (IEF-PAGE). …”
Get full text

Geospatial visualization and seasonal variation of heavy metals in river sediments by D. Justus Reymond, K. Sudalaimuthu

“…For heavy metal analysis, this study is unique in that it focuses on the far downstream, where the sediment deposition is higher.METHODS: Using an atomic absorption spectrophotometer, the abundance of iron, manganese, copper, and chromium was determined in this study. …”
Get full text

Comparison of the extraction efficiencies of four different solvents used in trace metal digestion of selected soils within Abakaliki, Nigeria by NO Omaka, IF Offor, ER Chukwu, U Ewuzie

“…Concentrations of 7 selected trace metals (Pb, Zn, Mn, Ni, Cd, Cu and Fe) were determined in the digested soil samples using atomic absorption  spectrophotometer. The concentrations (mg/kg) range, irrespective of sampling sites were: Pb (2.85-43.07; 1.42-11.49; 3.83-131.90; 1.98-184.12), Zn (0.02-3.98; 0.01-0.79; 2.25-13.22; 0.15-39.45), Mn (1.33-78.83; 0.38-14.85; 1.02-66.24; 0.84-104.39), Ni (1.15-14.10; 0.07-2.57; 2.09-49.70; 5.10-92.72), Cd (0.03-2.79; 0.01-0.61; 0.25-9.20; 0.15- 3.68), Cu (1.59-79.96; 0.65-14.33; 1.02-184.68; 1.60-134.10), Fe (6.62-149.44; 0.39-12.22; 44.95-375.27; 7.48-548.32) using EDTA, DTPA, HNO3/HClO4 and HCl/HNO3 respectively as extractanes. …”
Get full text

Impact of concentration of Bi2O3 on gamma ray shielding efficiency of BaTiO3 composite ceramics by Rama Kumar Nodagala, Tejeswara Rao Ponnada, Balaji Rao Ravuri

“…Other characteristics related to radiation shielding parameters such as mean free path (MFP), half-value layer (HVL), tenth-value layer (TVL), effective atomic number (Zeff), effective electron density (Neff), and effective conductivity (Ceff) were also assessed. …”
Get full text

Effects of specimen size and loading rate on the mechanical property of Bentonil-WRK bentonite for engineered barrier system by Ivan Jeff Navea, Jebie Balagosa, Se Hee Han, Seok Yoon, Yun Wook Choo

Get full text

Decomposition and Mineralization of Dimethyl Phthalate in an Aqueous Solution by Wet Oxidation by Dar-Ren Ji, Chia-Chi Chang, Shih-Yun Chen, Chun-Yu Chiu, Jyi-Yeong Tseng, Ching-Yuan Chang, Chiung-Fen Chang, Sheng-Wei Chiang, Zang-Sie Hung, Je-Lueng Shie, Yi-Hung Chen, Min-Hao Yuan

Get full text

Assessment of potentially toxic elements pollution in soils and plant leaves along the high-traffic highway zones in Tehran, Iran by Mahdieh Hosseinzadeh, Hamid Toranjzar, bbas Ahmadi, Nourollah Abdi, Javad Varvani

“…Samples were digested with aqua regia (soil) and nitric-hydrochloric acid (leaves) and analyzed using atomic absorption spectrophotometry. Pollution indices, including Pollution Load Index (PLI), Transfer Factor (TF), and Bioaccumulation Factor (BCF), were applied to assess contamination levels and metal mobility.The results showed moderate pollution levels across high-traffic zones (PLI = 3.94), with cadmium (Cd) contributing the most significant ecological risk (RI = 154.50). …”
Get full text

Analysis of the Concentration of Heavy Metals in Khat Grown in Meru County and the Assessment of Their Associated Health Risks by Albert M. Oyugi, Joshua K. Kibet, John O. Adongo

“…Therefore, the motivation behind this contribution is to determine the levels of six heavy metals, namely, cadmium (Cd), copper (Cu), chromium (Cr), lead (Pb), iron (Fe), and nickel (Ni) in consumable Meru khat samples, compare these levels with the permissible limits of World Health Organization (WHO) in order to predict associated health risks, and to estimate the noncarcinogenic risks of these metals by total health quotient (THQ) and health index (HI) on khat consumers. 1.0 g of dry ground khat samples was digested in 0.05 M HCl and allowed to stand for 5 hours before being analyzed for heavy metals using inductively coupled plasma atomic emission spectroscopy (ICP-AES). The mean heavy metal concentrations (mg/kg) in dry khat samples of six toxic heavy metals were Cd (7.81 ± 1.56), Cr (15.98 ± 2.22), Cu (15.81 ± 2.84), Fe (97.35 ± 32.67), Ni (0.37 ± 0.02), and Pb (32.36 ± 9.95). …”
Get full text

Comparison of the extraction efficiencies of four different solvents used in trace metal digestion of selected soils within Abakaliki, Nigeria by NO Omaka, IF Offor, ER Chukwu, U Ewuzie

“…Concentrations of 7 selected trace metals (Pb, Zn, Mn, Ni, Cd, Cu and Fe) were determined in the digested soil samples using atomic absorption  spectrophotometer. The concentrations (mg/kg) range, irrespective of sampling sites were: Pb (2.85-43.07; 1.42-11.49; 3.83-131.90; 1.98-184.12), Zn (0.02-3.98; 0.01-0.79; 2.25-13.22; 0.15-39.45), Mn (1.33-78.83; 0.38-14.85; 1.02-66.24; 0.84-104.39), Ni (1.15-14.10; 0.07-2.57; 2.09-49.70; 5.10-92.72), Cd (0.03-2.79; 0.01-0.61; 0.25-9.20; 0.15- 3.68), Cu (1.59-79.96; 0.65-14.33; 1.02-184.68; 1.60-134.10), Fe (6.62-149.44; 0.39-12.22; 44.95-375.27; 7.48-548.32) using EDTA, DTPA, HNO3/HClO4 and HCl/HNO3 respectively as extractanes. …”
Get full text