Jajati Mandal

Thinking science at the pub with @jajatisoil.bsky.social... Sometimes this is the best way to develop great research ideas!

10.10.2025 18:53 — 👍 6    🔁 1    💬 0    📌 0

Predicting the Permissible Limit of Arsenic in Irrigation Water for Rice Cultivation This study establishes, for the first time, a permissible arsenic limit for irrigation water to ensure the safe cultivation of rice, a dietary staple in South Asia. Arsenic contamination of irrigation water is a major health risk for approximately 110 million people in this region. An incubation study was conducted using 420 monolithic soil columns from 10 arsenic-contaminated sites under two irrigation regimes (rainfed and irrigated). Using a logistic regression model, a threshold concentration for arsenic in irrigation water was identified as 190 μg L–1. A nonparametric bootstrap simulation (n = 100,000) was performed, yielding a 95% confidence interval of 163.78–190.20 μg L–1, which confirmed the model’s stability. The threshold was validated with field samples and effectively classified rice grain arsenic concentrations. These findings provide a reference for managing irrigation practices to safeguard food safety in arsenic-endemic rice-growing regions of South Asia.

🌾 Excited to share our new paper in ACS ES&T Water!
We identified the permissible limit of arsenic in irrigation water for rice cultivation (190 μg/L) using 420 soil columns and machine learning.

📄 Research paper link: doi.org/10.1021/acse...

#Arsenic #RiceCultivation #FoodSecurity #WHO

26.09.2025 07:20 — 👍 3    🔁 0    💬 0    📌 0

PFAS contamination: regulatory landscape and future perspectives for India - Proceedings of the Indian National Science Academy This article highlights the escalating concern of PFAS (Per- and Polyfluorinated Alkyl Substances) contamination, which poses significant global concern and potentially serve implications for India. I...

Excited to share our latest #perspective article on the growing concern of #PFAS #contamination! As a global issue with significant implications for India, it's crucial to understand the complexities of PFAS and its #regulatory #challenges
link.springer.com/article/10.1...

09.08.2025 15:51 — 👍 1    🔁 0    💬 0    📌 0

AdsorpR: Adsorption Isotherm Models Model adsorption behavior using classical isotherms, including Langmuir, Freundlich, Brunauer–Emmett–Teller (BET), and Temkin models. The package supports parameter estimation through both linearized ...

Our #R package AdsorpR is now live on CRAN!
It helps fit and visualise adsorption isotherms—Langmuir, Freundlich, BET, Temkin—for anyone working on contaminant sorption in soil or water.
Explore it here: cran.r-project.org/package=Adso...
#RStats #SoilChemistry #PFAS #HeavyMetals #Research

09.04.2025 18:35 — 👍 1    🔁 0    💬 0    📌 0

Contamination of per- and poly-fluoroalkyl substances in agricultural soils: A review Numerous reviews have focused on the chemistry, fate and transport, and remediation of per- and poly-fluoroalkyl substances (PFAS) across various envi…

Our review article in Journal of Environmental Management explores #PFAS contamination in #agricultural #soils—sources, #crop uptake, and remediation. From #biowastes to #pesticides, we trace these chemicals’ pathways. Full paper:
www.sciencedirect.com/science/arti...

21.03.2025 09:20 — 👍 1    🔁 0    💬 0    📌 0

Soil stressors on ecophysiology of bauxite mine impacted soil: Heavy metal–acidity–organic matter nexus Bauxite mining practices addressed a high heavy metal load in surrounding soils. Labile fractions of the metals are the most important factor governing soil microbial quality. Synergistic stress cau...

Pleased to share our latest #research publication exploring the intricate relationship between #soil microbial health and #environmental stressors (soil acidity and #contamination) in regions adjacent to active bauxite mining operations.
📖 Full study : acsess.onlinelibrary.wiley.com/doi/full/10....

11.01.2025 19:06 — 👍 3    🔁 1    💬 0    📌 0

The 15 funniest winners from the 2024 Nikon Comedy Wildlife Awards Which one do you think is the funniest?

The 15 funniest winners from the 2024 Nikon Comedy Wildlife Awards

flip.it/Z4W3C6

15.12.2024 06:23 — 👍 2    🔁 1    💬 0    📌 0

Environmental Geochemistry and Health Environmental Geochemistry and Health is a cross-disciplinary journal that publishes innovative research linking health and the environment. Publishes ...

🌍 Excited to join the board of Associate Editors for Environmental Geochemistry and Health (EGAH), a journal dedicated to advancing research in #environmental health and #geochemistry.
#contaminants #impacts on #ecosystems and #human #health
link.springer.com/journal/10653

08.12.2024 20:14 — 👍 2    🔁 0    💬 0    📌 0

#0S.1d BlueSky thread 0S
0=overpopulation 8.2bn humans
1=climate 3W/m² +C-pollution 422ppm +CH4
2=biosphere +extinction
3=land use -1%soil lost/a
4= N P
5= plastic, nuclear waste, Pestizid 350_000 chemicals
6=green+blue+water
7=ocean: look for new variables
8=aerosols PFAS
9=ozone hole is back

29.10.2024 08:13 — 👍 155    🔁 55    💬 24    📌 7

Please do add me

27.11.2024 21:49 — 👍 0    🔁 0    💬 0    📌 0

#e-mails between 4-5 pm on #Fridays 😂

23.11.2024 18:03 — 👍 2    🔁 0    💬 0    📌 0

Arsenic in the Soil-Plant-Human Continuum in Regions of Asia: Exposure and Risk Assessment - Current Pollution Reports In this review article, a comprehensive meta-analysis based on available literature information has been undertaken to make a relative comparison of total arsenic in rice grain. This involves analyzin...

📊 Our meta-analysis reveal that rice consumption in South Asia, South East Asia, and East Asia poses an alarming cancer risk, exceeding safe limits by a staggering factor.

#conamination #rice #soil #arsenic #Asia

link.springer.com/article/10.1...

20.11.2024 22:13 — 👍 3    🔁 1    💬 0    📌 0

First snow (little) of winter, University of Salford. @cbenvenuto.bsky.social @laurabrettell.bsky.social
#Salford #Manchester #UK

20.11.2024 05:50 — 👍 4    🔁 1    💬 0    📌 0

Varietal differences influence arsenic and lead contamination of rice grown in mining impacted agricultural fields of Zamfara State, Nigeria In Zamfara state, Nigeria, rice is cultivated in fields contaminated with Pb (lead) from artisanal and illicit mining activities. Rice grown in such c…

Rice in Zamfara, Nigeria, faces lead (Pb) & arsenic (As) contamination from mining. Our study found Pb in grains 4x above Codex limits, while As was lower. Choosing the right variety is key for safer cultivation and consumption.
www.sciencedirect.com/science/arti...
#Contamination #Lead #rice #soil

18.11.2024 20:54 — 👍 1    🔁 0    💬 0    📌 0

Determination of bioavailable arsenic threshold and validation of modeled permissible total arsenic in paddy soil using machine learning Decision tree (DT) and logistic regression (LR) models are tested with field data. For rice cultivation, the better performing DT model predicts 14 mg kg−1 total As as the soil limit. Both LR and ra...

Did you know?
Arsenic contamination in rice is a major issue in South and Southeast Asia. Flooded fields make arsenic from soil and irrigation water more available to rice plants. Our attempt to derive guideline values for soil arsenic. doi.org/10.1002/jeq2...
#Contamination #Arsenic #rice

17.11.2024 21:26 — 👍 3    🔁 2    💬 0    📌 0