Research Fellow
Email: muzammel3@gmail.com
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Selected Publication
Source: https://doi.org/10.1002/tox.23959 Abstract
The
consumption of contaminated finfish from the polluted river channel of
Turag-Tongi-Balu, Kamarpara site, Dhaka poses significant health hazards to
humans. We used mass spectrometry on chemically digested liquid samples from
five fish species from Turag-Tongi-Balu to estimate the concentrations of 10
elements (Cr, Mn, Ni, Cu, Zn, As, Se, Cd, Fe, and Pb). Except M.
vittatus, the mean concentrations of Cd, Mn, Pb, and Se exceeded the Food
Safety Guideline (FSG) value in all fish species. Among the species
studied, L. rohita, C. punctata, C. batrachus, H.
fossilis, and M. vittatus exhibited higher Mn
concentrations surpassing the FSG threshold, thus elevating the
non-carcinogenic risk across all species. There were statistically significant
differences (p < .05) in the mean concentrations of heavy metals
among fish species. The Target Hazard Quotient (THQ) value of Mn poses a
significant non-carcinogenic risk to human health, while the hazard of other
metals is negligible. Except for M. vittus, the Hazard Index value
(HI ≥ 1) revealed the risk that all metals exceed the limit and pose a threat
to human health. Cd, As, and Ni metals pose a significant carcinogenic risk to
human health from the consumption of fish samples, which is a particularly
alarming target cancer risk (TCR). In conclusion, regular dietary consumption
of fish from this polluted ecosystem of the Turag-Tongi-Balu River channel's
Kamarpara site poses a significant health risk and is indicated as cancer. This
study emphasizes the significance of monitoring heavy metal contamination in
finfish and minimizing the risk to human health with effective measures.
Citation: Hossain, M.M., Jahan, I., Nahian, A. A., Zhu, D* (2024) Immediate health risk: concentration of heavy metals in contaminated freshwater fishes from the river channel of Turag-Tongi-Balu. Environmental Toxicology. 2023;39(1):120‐134. https://doi.org/10.1002/tox.23959
Abstract
The content of heavy metals in the food chain
has grown due to human activities and rapid industrial growth. The accumulation
of heavy metals in P. betel leaves and the
related threat to human health were analyzed by using the AAS that was
collected from eleven locations inside the city of Dhaka. High MDA contents
indicated contamination in P. betel samples and can
regulate biochemical activity by different potential toxic elements (PTEs). The P.
betel samples revealed the highest mean concentrations of As
(2.09 mg/kg), Pb (0.06 mg/kg), Mn (218 mg/kg), Ni (1.55 mg/kg), Cu (10 mg/kg), Zn (2.6 mg/kg), Cr (5.1 mg/kg), and Cd (0.003 mg/kg) and certain metal
exceed the guideline value. Mn, Cr, and As mean values at the research sites
are higher than the permitted concentration range. Among all metals, Mn was the
most accumulated metal in leaves and enhanced hazard index (HI) and
non-carcinogenic risk for children. Individual metal THQ values were all less
than 1 (except Mn), indicating that consuming only one metal from betel samples
would not pose a serious risk to one's health. However, HI value (> 1)
indicates a possible non-carcinogenic health risk to urban city people,
especially in children. The assessment revealed that the allowable range of Cr
and As content in betel leaves may enhance the carcinogenic risk (CR). Among
heavy metals, the CR value of Cr indicated an enhanced cancer risk in children
at L3, L5, L6, L7, L8, L9, L10, and L11 sites. This study shows from a health
perspective that people who eat contaminated betel leaves are continuously
exposed to metal pollution, which can have both carcinogenic and
noncarcinogenic effects.
Citation : Hossain M.M., Tripty, J., Shishir, M.Z.A., Han, S., Zhu, D*. (2024). Malondialdehyde and heavy metal contents in Piper betel: Possible Risks of Heavy Metals in Human Health. Journal of Food Composition and Analysis. https://doi.org/10.1016/j.jfca.2024.106540.
Abstract
The concern of potential toxic elements (PTEs) contamination in the river ecosystem is growing due to
anthropological activity. The contents of seven PTEs in sediments from the Balu River channel were analyzed
using atomic absorption spectroscopy (AAS) and an environmental risk model. Several PTEs were found in the
sediment at high levels, including zinc (Zn), copper (Cu), arsenic (As), lead (Pb), cadmium (Cd), nickel (Ni), and
mercury (Hg), that might pose a risk to human and ecological health. The highest mean concentration of PTEs in
sediment followed in decreasing order Zn (1365.21 mg/kg) > Cu (149.34 mg/kg) > Pb (46.34 mg/kg) > Ni
(34.78 mg/kg) > As (6.31 mg/kg) > Cd (2.34 mg/kg) > Hg (1.03 mg/kg). In addition, most of these PTEs were
significantly correlated (p < 0.05) among the sites and exceeded the safety guideline value. The geoaccumulation index (Igeo), contamination factor (CF), and pollution load index (PLI) showed high levels of
PTEs contamination and moderately polluted to highly polluted levels of these elements. At the BL3, BL4, and
BL6 sites within the study site, the ecological risk (PERI) score was extremely high, and the PERI values range
found was from 75.39 to 355.72. Every PTE had a slightly greater concentration during the dry season than the
wet season. Interestingly, PTE accumulation from sediment indicated non-carcinogenic risk (HQdermal) in human
health, whereas most of the sites showed carcinogenic risk (CRdermal) to human health (adult and child) due to Cd
and Ni accumulation. Multivariate statistical analysis (MVSA) indicated the most likely anthropological sources
were the untreated wastes discharged in the river sampling area. People who come into contact with polluted
sediments are constantly exposed to Ni and Cd pollution, which increases the risk of cancer and non-cancerous
diseases. So, continuous PTE monitoring is advised by this study to assess ecological and human health risks.
Citation: Hossain M.M., Jahan, I., Nahian AA., Johannesson, K.J., Maxwell, S.J., Zhu, D. (2025). Distribution of potentially toxic elements in sediments of the municipal river channel (Balu), Dhaka, Bangladesh: Ecological and health risks assessment. Journal of Contaminant Hydrology, 269, 104492. https://doi.org/10.1016/j.jconhyd.2024.104492.
Abstract
There is concern over potential toxic elements (PTEs) impacting river ecosystems due to human and industrial activities. The river’s water, sediment, and aquatic life are all severely affected by the release of chemical and urban waste. PTE concentrations in sediment, water, and aquatic species from river ecosystems are reported in this review. Among the PTEs, chromium (Cr), cadmium (Cd), lead (Pb), and nickel (Ni) revealed high pollution levels in water and aquatic species (fish and shellfish) at many rivers. The Karnaphuli, Ganga, and Lee rivers have high levels of Pb and Cd contamination, while the Buriganga and Korotoa rivers’ water had notable Ni contamination. A number of rivers with PTEs showed ecological risk as a consequence of the sediment’s potential ecological risk (PER), the pollutant load index (PLI), and the geoaccumulation index (Igeo). A comprehensive study suggests elevated PLI values in river sediments, indicating significant pollution levels, particularly in the Buriganga River sediment, marked by high Igeo values. The PER of the Shitalakshya and Buriganga rivers was marked as very high risk, with an Eir > 320, while the Dhaleshwari and Khiru rivers showed ‘high risk’, with 160 = Eir < 320. It was found that fish and shellfish from the Buriganga, Turag, and Swat rivers have a high concentration of Cr. PTE pollution across several river sites could pose health toxicity risks to humans through the consumption of aquatic species. The CR value shows the carcinogenic risk to human health from eating fish and shellfish, whereas an HI value > 1 suggests no carcinogenic risk. The occurrence of other PTEs, including manganese (Mn), arsenic (As), and nickel (Ni), significantly increases the ecological risk and concerns to aquatic life and human health. This study emphasises the importance of PTE toxicity risk and continuous monitoring for the sustainability of river ecosystems.
Citation: Hossain, M.M.; Jahan, I.; Dar, M.A.; Dhanavade, M.J.; Mamtaz, A.F.B.; Maxwell, S.J.; Han, S.; Zhu, D. A Review of Potentially Toxic Elements in Sediment, Water, and Aquatic Species from the River Ecosystems. Toxics 2025, 13, 26. https://doi.org/ 10.3390/toxics13010026.
AbstractMicroplastics (MPs) are prevalent in coastal habitats, but their occurrence in highly vulnerable coastal zones and human exposure risk are poorly understood, especially in developing nations like Bangladesh. This inquiry focused on the prevalence and potential hazards of MPs in surface sediment and shallow groundwater samples collected from 12 sites in Cox’s Bazar, Bangladesh, from August to October 2023. Using stereomicroscopy and FTIR, MPs were quantified, with concentrations ranging from 60 to 813.33 MPs/kg in surficial sediment and 3.34 to 36.66 MPs/L in shallow groundwater, with mean values of 294.38 ± 26.61 MPs/kg and 18.91 ± 4.75 MPs/L. The dominant MPs were composed of transparent and white fibers, ranging in size from 0 to 0.5 mm, with HDPE (High-Density Polyethylene) and PP (Polypropylene) identified as the most commonly found polymers. To assess MP exposure in humans and the environment, this investigation used three indices: the polymer hazard index (PHI), the pollutant load index (PLI), and the estimated daily intake (EDI). The findings indicate that children exhibit greater exposure than adults, with observed low contamination levels, alongside a spectrum of toxicity from moderate to extreme. This study enhances understanding of MP contamination in the surficial sediments and shallow groundwater of Bangladesh, highlighting the need for further investigation into ecotoxicology, human health risks, legislation, and related issues.
Citation: Ahmed, M., Seddique, A.A., Manik, M., Jahid, SK.A., Hossain, M.M., Pastorino, P. (2026) Occurrence, Characteristics, and Risk Implications of Microplastics in Coastal Sediments and Shallow Groundwater: Evidence from Cox’s Bazar, Bangladesh. Microplastics 5(2),64. https://doi.org/10.3390/microplastics5020064. (IF 5.1).
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