A5012467290- Arsenic contamination and mitigation
- Groundwater and Isotope Geochemistry
- Heavy metals in environment
- Heavy Metal Exposure and Toxicity
- Water Quality and Pollution Assessment
- Groundwater and Watershed Analysis
- Supply Chain and Inventory Management
- Groundwater flow and contamination studies
- Tropical and Extratropical Cyclones Research
- Electromagnetic Compatibility and Measurements
- Antenna Design and Analysis
- Sustainable Supply Chain Management
- Flood Risk Assessment and Management
- Coastal wetland ecosystem dynamics
- Antenna Design and Optimization
- Scheduling and Optimization Algorithms
- Mine drainage and remediation techniques
- Atmospheric and Environmental Gas Dynamics
- Geotechnical and construction materials studies
- Fluoride Effects and Removal
- Geochemistry and Geologic Mapping
- Advances in Cucurbitaceae Research
- Recycling and utilization of industrial and municipal waste in materials production
- Agricultural Science and Fertilization
- Crop Yield and Soil Fertility
Bangladesh Agricultural Research Institute
2024
University of Portsmouth
2017-2024
Imperial College London
2014-2024
Sylhet Agricultural University
2020
University of Rajshahi
2020
North South University
2017-2019
Universiti Brunei Darussalam
2008-2018
University College London
1984-2017
Shahjalal University of Science and Technology
2007-2015
University of Dhaka
2003-2009
Across West Bengal and Bangladesh, concentrations of Cl in much groundwater exceed the natural, upper limit 10 mg/L. The Cl/Br mass ratios groundwaters range up to 2500 scatter along mixing lines between waste-water dilute groundwater, with many falling near mean end-member value for 1561 at 126 mg/L Cl. Values seawater ratio 288 uncommon NO(3)-bearing groundwaters, those containing measurable amounts salt-corrected SO(4) (SO(4) corrected marine salt). data show that shallow tapped by...
The elevated arsenic (As) content of groundwater from wells across Bangladesh and several other South Asian countries is estimated to slowly poison at least 100 million people. heterogeneous distribution dissolved in the subsurface complicates understanding its release sediment matrix into groundwater, as well design mitigation strategies. Using tritium‐helium ( 3 H/ He) dating technique, we show that there a linear correlation between age depths <20 m As concentration, with an average...
Whereas serious health consequences of widespread consumption groundwater elevated in As have been documented several South Asian countries, the mechanisms responsible for mobilization reducing aquifers remain poorly understood. We document here a previously unrecognized and consistent relationship between dissolved concentrations phosphate-mobilizable content aquifer sediment set precisely depth-matched samples from across Bangladesh. The holds nearly 3 orders magnitude suggests that...
Drinking water in much of Asia, particularly coastal and rural settings, is provided by a variety sources, which are widely distributed frequently managed at an individual or local community level. Coastal near-inland drinking sources South East (SSE) Asia vulnerable to contamination seawater, most dramatically from tropical cyclone induced storm surges. This paper assesses spatial vulnerabilities salinisation due meteorological variability climate change along the (ca. 6000 km) coastline...
A comparison of field and laboratory measurements arsenic in groundwater Araihazar, Bangladesh, indicates that the most widely used kit correctly determined status 88% 799 wells relative to local standard 50 microg/L As. Additional tests showthatthe inconsistencies, mainly underestimates 50-100 As range, can be avoided by increasing reaction time from 20 40 min. Despite this limitation, data already compiled for millions Bangladesh Arsenic Mitigation Water Supply Project, combination with...
Groundwater arsenic (As) is elevated in the shallow Holocene aquifers of Bangladesh. In dry season, groundwater discharges to major rivers. This process may influence chemistry river and hyporheic zone sediment. To assess fate As during discharge, surface (0–5 cm) subsurface (1–3 m) sediment samples were collected at 9 sites from bank Meghna River along a transect its northern source (25° N) Bay Bengal (22.5° N). Bulk concentrations averaged 16 ± 7 mg/kg ( n = 9). Subsurface contained higher...
Background: Millions of coastal inhabitants in Southeast Asia have been experiencing increasing sodium concentrations their drinking-water sources, likely partially due to climate change. High (dietary) intake has convincingly proven increase risk hypertension; it remains unknown, however, whether consumption drinking water could similar effects on health. Objectives: We present the results a cohort study which we assessed (DWS) blood pressure (BP) populations Bangladesh. Methods: DWS, BP,...
The high‐degree of spatial variability dissolved As levels in shallow aquifers the Bengal Basin has been well documented but underlying mechanisms remain poorly understood. We compare here concentrations measured groundwater pumped from 4700 wells <22 m (75 ft) deep across a 25 km 2 area Bangladesh with variations nature surface soils inferred 18,500 measurements frequency domain electromagnetic induction. A set 14 hand auger cores recovered same indicate that combination grain size and...
An investigation was carried out to measure the prevalence of ecto- and endopatasites in semi-scavenging black bengal goat (Capra hircus) at Pahartali Thana under Chittagong district, Bangladesh during period February May/2006. The overall gastrointestinal helminths were 63.41% (N=317). In these positive samples, Strongyloides spp. (51.74%) more prevalent and Moniezia sp. and Capillaria sp. least (n=201). parasitic load goats varied from egg per gram (epg) 0 1600. Faecal sample evaluation...
Groundwater arsenic (As) presents a public health risk of great magnitude in densely populated Asian delta regions, most acutely the Bengal Basin (West Bengal, India and Bangladesh). Research has focused on sources, mobilisation, heterogeneity groundwater As, but consistent explanation As distribution from local to basin scale remains elusive. We show for Aquifer System that numerous, discontinuous silt-clay layers together with surface topography impose hierarchical pattern flow, which...
Abstract The use of groundwater, a major source potable water, in developing countries has proven to be an invaluable resource for local populations. ability safely this water drinking, however, depends on its chemical quality, factor primarily controlled by various aquifer attributes such as geology and geochemistry. On global scale, groundwater is sourced from either sedimentary or basement aquifers. In study, we compared the constituents trace elements found these two types system context...
Abstract Salinity is a widespread problem along the Asian coast, mainly in reclaimed lands where most people live. These low-lying areas are vulnerable to impacts from tropical cyclone induced storm surges. The role of such surges on long-term salinity water resources, particularly salinisation drinking ponds, key resource, requires further investigation. Here we show, using high-resolution measurements pond hydrology and numerical modelling, that episodic inundation events cause surface...
The most readily available sources of protein for humans are fish and products. affordable species mackerel, which found in markets across the globe used a variety regional cuisines. present study was carried out to analyze biochemical composition (wet weight basis) such as moisture, protein, fat ash, carbohydrate three mackerel fishes (Rastrelliger kanagurta, Scomberomorus guttatus, kuhlii) Bay Bengal, Bangladesh. highest moisture (73.25%–73.76%) S. kuhlii, whereas content (18.19%–18.35%)...
Salinity, both in soil and water, is a ubiquitous problem coastal Bangladesh, particularly the southwest. Salinity varies at local scale (5–10 m), but relative roles of land use surface geology on salinity variation near-surface (< 5 m) groundwater are not fully understood. Surface geology, (ca. 3 two small sites (each 0.05 km2) were explored southwest region Bangladesh. The sediments fine hydrometer analyses cored samples indicate dominance silty clay (70%) along with very sand (5%), sandy...