Qudrat Ullah

Organocatalytic stereoselective C–H diazenylation of active methylenes with arenediazonium salts

Herein, we report the unveiling of the first organocatalytic sp3 C–H diazenylation of active methylenes with arenediazonium salts under ambient conditions, affording diverse hydrazones. The reaction features mild and additive-free conditions, excellent regio- and chemoselectivity, the use of readily available substrate...

Harnessing biochar innovations to combat heavy metal contamination and sustain crop resilience amid climate challenges.

Asian and European regions are characterized by huge inequalities, with the levels of cadmium, lead, and zinc tending to rise above safe concentrations by 1.26-6.01 times, disrupting nutrient cycling and microbial communities due to more than 37% of arable land at risk of high levels of metal mobilization. This literat...

Environmental contamination and human health risk assessment of trace element exposure through diverse water sources

Human activities such as industrial effluents, agricultural run-off, and other land-based sources of pollution contaminate water with trace elements, posing threats to both the environment and human health. This study investigates concentrations of three trace elements, namely nickel (Ni), lead (Pb), and copper (Cu), i...

Wastewater Irrigation Drives Depth‐dependent Microbial Functions and Soil Organic Carbon Dynamics in Peri‐urban Agricultural Soils

Integrated Biomarker Assessment of Bifenthrin, Chlorpyrifos and Endosulfan Toxicity in Indigenous Carps (Catla catla and Labeo rohita): Oxidative Stress, Genotoxicity and Nuclear Alterations

Combined exposure to bifenthrin–chlorpyrifos and bifenthrin–endosulfan mixtures induces pronounced oxidative stress and genotoxic damage in C. catla and L. rohita, highlighting the usefulness of antioxidant and DNA damage biomarkers for monitoring pesticide contamination in aquatic environments.

Toxicological risks of industrial waste in agricultural soils for food safety and environmental sustainability

Industrialization has significantly increased the productivity of agriculture but industrial wastes have also increased the contamination of agricultural soils. This is an increasing threat to the food safety, the stability of ecosystems and human health. Certain industrial by-products can provide short-term benefits t...

Mechanistic role of biochar as a geobiochemical amendment: Mitigating abiotic stress and enhancing soil–plant interactions

Abiotic stressors, including drought, salinity, and heavy metal contamination, pose escalating threats to global food security, challenges further exacerbated by climate change and progressive soil degradation. As a strategic geochemical amendment, biochar is increasingly proposed to enhance soil resilience and agr...