Hossain LAB

 Welcome to Hossain LAB, a dynamic hub of scientific innovation and interdisciplinary research dedicated to understanding and solving critical environmental challenges.

We specialize in environmental toxicology, ecology, and sustainable science, working at the intersection of biology and environmental health to create meaningful, real-world impact.

 Our Mission

To advance scientific knowledge and develop innovative solutions for environmental protection, ecological sustainability, and human health through cutting-edge research and collaboration.

Advancing the Sustainable Development Goals (SDGs) at Hossain LAB.

 Our Focus Areas

• Environmental Toxicology & Risk Assessment
• Ecology & Biodiversity Conservation
• Pollution Monitoring & Control
• AI-driven Environmental Analysis
• Climate & Public Health Research

 What We Do

• Conduct high-impact research on pollutants and ecosystems
• Develop data-driven and AI-based environmental solutions
• Train future scientists and researchers
• Collaborate with national and international institutions

 Join Us in Making a Difference

At Hossain LAB, we believe science can shape a healthier planet. Whether you are a student, researcher, or collaborator, we welcome you to be part of our journey toward sustainable innovation.

Potentially toxic elements (PTEs) in wild aesthetic plants (Cosmos)

 
Abstract

Anthropogenic activities and fast industrial growth influence the level of PTEs in the soil and the food chain. The contents of PTEs were examined in two wild Cosmos species (C. bipinnatus and D. cosmos) from Jiangsu City, using chemical and AAS methods to determine the risk to human health. The highest mean concentrations of PTEs in plants showed statistically significant (p < 0.05) differences between diverse plant parts and followed the decreasing order Mn (85.0 mg kg-1 in flower) > Zn (62.0 mg kg-1 in flower) > Cu (12.0 mg kg-1 in flower) > Cr (4.3 mg kg-1 in root) > Ni (0.97 mg kg-1 in root) > Cd (0.38 mg kg-1 in root) > Pb (0.03 mg kg-1 in shoot) > As (0.025 mg kg-1 in root). The highest values of Cr, Mn, Zn, and Cd in plant samples exceeded the permitted limit. While the quantity of Cr in the soil sample was high, the transfer coefficients (K) were high for Zn and Mn. The high percentage of Mn in roots was 68% and 61%, respectively, for C. bipinnatus and D. cosmos. The THQ values for Mn and HI exceeded 1 in all plant parts, except for the D. cosmos shoot (S2) and flower (F2). The assessment revealed that they are indicating a potential non-carcinogenic risk in human health. The TCR values for Cd and Ni showed a potential carcinogenic risk in adult and child health. This study reveals, for the first time, that wild Cosmos plants in an urban environment accumulate PTEs at levels posing a potential human health risk. The key risk metrics (HI > 1, TCR for Cd/Ni > 10-4) are highlighting significant health concerns. It is recommended to limit the use of urban-grown wild Cosmos plants for food purposes until further safety assessments are conducted.

Keywords: Cosmos; Environment; Health risk; PTEs; Plant.

Citation: 

Hossain, M.M., Tu, S., Han, S. et al. Human health risk assessment from potentially toxic elements (PTEs) in wild aesthetic plants (Cosmos): PTE concentration and distribution. Environ Monit Assess 198, 694 (2026). https://doi.org/10.1007/s10661-026-15545-1.

© 2026. The Author(s), under exclusive licence to Springer Nature Switzerland AG.

World Fish Migration Day 2026 : Run For The River

CBEES and BCFRC celebrated World Fish Migration Day 2026 Bangladesh as "Run for the River" by the supporter of Dr. Md. Muzammel Hossain. Mentor Dr. Md. Muzammel Hossain visited at the Old Brahmaputra River area and perform the activities with child and adult tourist people. Rising awareness to conserve river ecosystem and migratory fish.

Once upon a time, in a small village nestled beside a river, the community faced a growing problem. The river that once flowed abundantly was slowly drying up. The villagers knew they had to act before it was too late.

One bright morning, a young girl named Mariam decided to organize a run—an event called "Run for the River." She believed that if everyone came together, they could raise awareness and inspire change. She spread the word, and soon, people of all ages signed up to participate.

On the day of the run, the village was alive with energy. Children, elders, farmers, and traders all took part, running along the riverbank. As they moved, they remembered the times when the river was full of life—children swimming, boats sailing, and fish darting beneath the surface.

After the run, the villagers gathered and pledged to take action. They planted trees along the banks, cleaned up trash, and used water more wisely. The community realized that their efforts, big or small, could make a difference.

The river gradually began to recover, flowing stronger and clearer than before. The "Run for the River" had not only raised awareness but also united the villagers in a shared purpose.

From that day on, every year, they ran again—celebrating their river and reminding everyone that caring for nature starts with a single step. And together, they ensured that the river would continue to flow for generations to come.

#weareriverpeople #wfmd2026 #WFMD #WorldFishMigrationDay

World Bee Day 2026

"Happy World Bee Day!

Bees are part of the biodiversity on which we all depend for our survival.

Agri queen species, bees are remarkable bio-indicators whose hive behaviors, foraging patterns, and reliance on flowers reveal crucial environmental data. By studying them, we can learn how tiny, decentralized actions maintain global ecosystems, providing valuable lessons in climate action, weather anticipation, and sustainable water management. By pollinating plants and trees, bees directly facilitate the growth of ecosystems that store carbon in the soil and mitigate extreme local heat. Bees can predict approaching storms. It is an act of gratitude for the interconnected web of life that sustains us all.

Let's celebrate these amazing pollinators who play a vital role in our ecosystems and food security. May we continue to protect and cherish bees for a healthier, sweeter planet.

Buzzing with gratitude and hope!"

Dr. Md. Muzammel Hossain
Director, CBEES

Soil, Water, and Environment

Soil: Soil is a vital natural resource that serves as the foundation for plant growth and supports a wide range of organisms. It is composed of minerals, organic matter, water, and air. Healthy soil is essential for agriculture, forestry, and maintaining biodiversity. However, soil can be degraded by erosion, pollution, deforestation, and improper farming practices, which can lead to reduced fertility and environmental imbalance.

Water: Water is crucial for all forms of life and covers about 71% of the Earth's surface. It exists in various forms—rivers, lakes, groundwater, glaciers, and oceans. Freshwater resources are vital for drinking, agriculture, industry, and sanitation. Pollution from industrial waste, sewage, and chemicals threatens water quality and availability, leading to health issues and ecosystem damage. Conservation of water resources is essential for sustainable development.

Environment:The environment encompasses all living and non-living elements that interact in the Earth’s biosphere. It includes air, water, soil, plants, animals, and the climate. Human activities such as industrialization, deforestation, and pollution have significantly impacted the environment, causing problems like climate change, loss of biodiversity, and pollution. Protecting and sustainably managing the environment is crucial for the well-being of all living organisms and future generations.

In summary, soil and water are fundamental components of the environment that support life on Earth. Ensuring their health and sustainability is key to maintaining ecological balance and addressing global environmental challenges.

Heavy metal pollution in freshwater fish and human health risk

The Turag-Tongi-Balu river channel is a vital water body providing water for domestic, agricultural, and industrial use. However, increasing pollution from industrial effluents, domestic waste, and agricultural runoff has led to contamination of the water and aquatic life, particularly fish. Dr. Hossain investigated the immediate health risks related to the concentration of heavy metals in contaminated freshwater fishes from the river channel of Turag-Tongi-Balu.

Journal : Environmental Toxicology

https://doi.org/10.1002/tox.23959

Supported By BCFRC

World Wildlife Day 2026