A5019246834- Heavy metals in environment
- Radioactivity and Radon Measurements
- Heavy Metal Exposure and Toxicity
- Geochemistry and Geologic Mapping
- Atmospheric chemistry and aerosols
- Heavy Metals in Plants
- Immunotherapy and Immune Responses
- Mercury impact and mitigation studies
- Mining and Resource Management
- RNA Interference and Gene Delivery
- Animal Virus Infections Studies
- Erythrocyte Function and Pathophysiology
- Blood groups and transfusion
- Recycling and Waste Management Techniques
- Immune Response and Inflammation
- Water Quality and Pollution Assessment
- Air Quality and Health Impacts
- Vehicle emissions and performance
- Coal and Its By-products
- Polyomavirus and related diseases
- Toxic Organic Pollutants Impact
- Environmental Justice and Health Disparities
- Advanced Combustion Engine Technologies
- Cardiac pacing and defibrillation studies
- Groundwater and Isotope Geochemistry
Royal Roads University
2015-2025
King's College London
2024
University of Glasgow
2024
Swansea Bay University Health Board
2022
The Ohio State University
1956-1979
University of Leeds
1966
Oklahoma State Department of Health
1959
Procter & Gamble (United States)
1955
Norwich University
1946-1948
Eaton (United States)
1946
A survey of the in vitro bacteriostatic action forty-two furan compounds, including derivatives furan, 2-furaldehyde, 2-furfuryl alcohol and 2-furoic acid has been presented. It disclosed that with a few exceptions, presence nitro group 5-position ring conferred considerable on such derivatives. Twenty-five compounds this type were tested twenty-four showed activity varying degrees. The single ineffective compound was as saturated solution broth which contained less than 1.5 mgm. %....
Anterior cruciate ligament (ACL) rupture is a common debilitating injury that can cause instability of the knee. We aimed to investigate best management strategy between reconstructive surgery and non-surgical treatment for patients with non-acute ACL persistent symptoms instability.We did pragmatic, multicentre, superiority, randomised controlled trial in 29 secondary care National Health Service orthopaedic units UK. Patients symptomatic knee problems (instability) consistent an were...
This study investigated the heavy metal content and extent of pollution in soils from abandoned dump sites Kumasi, Ghana. Concentrations metals 70 soil samples were determined using a Niton XL3t GOLD field portable X-ray fluorescence spectrometer confirmed on an Agilent 7800 inductively coupled plasma-mass spectrometer. Mercury was with Lumex mercury analyzer. Mean concentrations order: Zn (166 mg/kg). Cr (67 mg/kg) > Cu (32 mg/kg), Ni (22 Pb (11 Cd (8.9 As (4.2 Hg (0.04 for Kronum; (558...
Abstract Bioaccessibility is a measurement of substance's solubility in the human gastro-intestinal system, and often used risk assessment soils. The present study was designed to determine variability among laboratories using different methods measure bioaccessibility 24 inorganic contaminants one standardized soil sample, standard reference material NIST 2710. Fourteen total 17 extraction methods. between assessed by calculating reproducibility relative deviations (RSDs), where sum...
Agbogbloshie in Accra, Ghana, was a center for informal e-waste recycling until it closed recently. This study investigated the potential health risks of toxic metals (including As, Cd, Cu, Ni, Pb, Sb, and Zn) found surface soils based on their concentrations vitro bioaccessibility. Mean at burning sites were As: 218; Cd: 65; Cr: 182; Cu: 15,841; Ni: 145; Pb: 6,106; Sb: 552; Zn: 16,065 mg/kg while dismantling had mean 23; 38; 342; 3239; 96; 681; 104; 1658 mg/kg. The findings confirmed...
Geophagia is the craving for non-food substances and commonly practiced among pregnant women children. Consumption of geophagic clay samples can have serious implications on health consumers as a result presence toxic metals such Pb, As, Hg Cd. This study sought to determine levels heavy in studied potential risks cumulative carcinogenic non-carcinogenic via oral (ingestion) dermal exposure routes. A total thirty (30) white were analysed using Niton Thermo scientific XRF Analyser (Mobile...
1. 5-nitro-2-furaldehyde semicarbazone was shown to exert antibacterial action in vitro on a variety of Gram positive and negative species bacteria, also upon M. tuberculosis . 2. The LD50 the compound following oral administration mice determined seven samples. It found that chief symptom toxicity from either or parenteral use rats hyperirritability. 3. Lethal doses produced no definite histopathology when fed rats, but subcutaneous injections large marked changes structure liver...
Rapid urbanization and uncontrolled industrial activities in developing countries have raised concerns about potentially toxic metal contamination of the environment. This study assessed levels elements soil airborne particulate matter Suame Asafo areas Kumasi metropolis, characterized by a high concentration auto mechanic workshops residential settlements. X-ray fluorescence analysis inductively coupled plasma-mass spectrometry were used to determine concentrations samples. The results...
In this study, we assessed the suitability of using a standard reference material (SRM) other than National Institute Standards and Technology (NIST) 2710a or NIST 2711a in USEPA Method 1340 to determine arsenic (As) lead (Pb) vitro bioaccessibility (IVBA) capabilities Canadian-based laboratories perform method. Five participated an initial round robin study analyzed 2710a, 2711a, BGS119, Enviromat SS-2. Intra- inter-laboratory variability were generally acceptable with percentage relative...
The aim of this study was to evaluate the levels selected heavy metals/metalloids in filling station dust from Kumasi Metropolis, Ghana. A total forty (40) samples were analysed for Fe, Ti, Zn, Zr, Mn, Sr, Ba, Cr, Pd, Ni, Cu, As and Mo using X-ray Fluorescence technique. Mean concentrations As, Mo, Pb, Zn Zr 92.26, 6.20, 70.41, 50.18, 466.22, 163.68, 4.63, 44.05, 46.93, 106.69, 327.51, 280.32 182.05 mg/kg, respectively. pollution index (PI) geo-accumulation (Igeo) values order Ba < Mn Sr Cu...
Anthropogenic activities such as artisanal mining pose a major environmental health concern due to the potential for discharge of toxic metals into environment.To determine distribution and pollution patterns arsenic (As), iron (Fe), nickel (Ni), cobalt (Co), chromium (Cr), manganese (Mn), copper (Cu) zinc (Zn) in topsoil community Ghana, along with human risks vitro bioaccessibility.Concentrations were determined using X-ray fluorescence techniques validated inductively coupled plasma-mass...
ABSTRACT Human health risk estimates for sites with contaminated soils are often based on the assumption that bulk concentration of substances in outdoor soil samples is a reasonable predictor exposures via incidental ingestion, particle inhalation, and dermal absorption. Most underlying conceptual models grossly simplistic, however, when considered light (i) biases distribution contaminants across sizes, (ii) size range particles dusts environmentally available, (iii) factors influence...
The distribution, and ecological risks due to toxic metals in topsoils of an urban commercial centre Kumasi metropolis were determined. Concentrations heavy the samples initially screened using field portable X-ray fluorescence spectrometer prior confirmation on inductively coupled plasma-mass spectrometer. results from two instruments correlated well with high linearity (R2 > 0.70). order: Fe (45246.15 mg/kg) Mn (347.86 Zn (176.40 V (173.10 Cr (125.12 Pb (53.47 Ni (43.16 Cu (39.85 As (4.59...
Abstract Despite the growing concern for food safety and environmental conservation, empirical studies on public awareness perception concerning heavy metal poisoning are limited. This study examines awareness, perceptions, factors influencing of contamination in rice ( Oryza sativa L.) among farmers consumers Ghana. Using data collected by multistage sampling from 275 185 three municipalities Ashanti Region Ghana, employed indices ordered logit regression models analyses. Results indicate...
Biochar is a stabilised, carbon-rich material created when biomass heated to temperatures usually between 450 and 550 °C, under low-oxygen concentrations. This study evaluated the effectiveness of sawdust, cocoa pod ash rice husk biochars in remediating metal-contaminated paddy soil Nobewam, Ghana. was applied 21 days before cultivating for 120 days, followed by sampling harvesting metals physicochemical analyses. Compared untreated soils, biochar treatments exhibited an enhancement quality,...
ABSTRACT Human health risk estimates for sites with contaminated soils are often based on the assumption that outdoor soil sieved to < 250 μm is a reasonable surrogate predicting exposures via incidental ingestion. In vitro bioaccessibility tests also increasingly used "improve" ingestion exposure predictions of contaminants at different sites. However, when considered in terms factors influence desorption from particles and uptake into humans, available studies indicate current "standards...
Abstract The presence of metals in milled shrimps sold on some major markets Kumasi were investigated to ascertain their levels and the potential health risk they may pose humans when ingested, due level pollution marine environment where these are obtained from. samples, which comprised 30 composites, analysed using x-ray florescence spectrometry found contain Co, Cr, Cu, Fe, K, Mo, Ca, Zn, As, Sr, Zr with average concentrations 4.09 mg kg − 1 , 5.17 25.14 351.47 9050.74 4.08 21984.48...
Abstract Globally, elevated environmental mercury levels have been linked to artisanal and small-scale gold mining; however, investigations into mining communities often overlook other potential sources their contributions soil accumulation. This study explored the positive matrix factorization receptor model identify possible of contamination in two major (Kenyasi Obuasi) a commercial city (Sunyani) Ghana. The concentrations across three areas showed no significant differences (p = 0.257 at...