Publications by authors named "A A Dia"
Assessing the fate of contaminants in the environment requires a deep understanding of intrinsic adsorption mechanisms on natural minerals such as Fe-oxyhydroxides. In this study, we proposed an innovative approach to probe site heterogeneities on the goethite surface by comparing the adsorption behavior of rare earth elements (REEs, including Sc, Y, and all lanthanides; Ln) except Pm, as well as Th and U. A surface loading-dependent adsorption of Ln and Y was observed, with a shift from (i) preferential middle to heavy REE adsorption and (ii) limited to substantial fractionation between Y and Ho as the loading increased.
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- Chronic kidney disease (CKD) is linked to hypertension (HBP), with a significant number of people with HBP remaining undiagnosed, especially in developing countries like Senegal.
- A study in northern Senegal assessed CKD prevalence among three groups: normotensive, diagnosed hypertension, and undiagnosed hypertension, involving over 2,400 individuals aged 18-80.
- The findings revealed that 52% had HBP and 17.8% had CKD, with undiagnosed hypertensive patients having a notably high rate of CKD, particularly in older women.
Article Synopsis
- Research shows that the mobility of rare earth elements (REEs) in the environment is influenced by colloids, particularly iron-organic colloids (Fe-OM), which come in both large and small sizes.
- A study using advanced techniques found that Fe-OM nano-colloids, around 25 nm in diameter, can aggregate more at lower pH levels and significantly change size when interacting with REEs, especially heavy REEs that form strong complexes.
- The addition of calcium enhances the aggregation of these nano-colloids by neutralizing their charges, suggesting that REEs can influence their own movement and the transfer of colloids in the environment.
Metal contaminants were found in a soil amended with a compost produced from household waste that included plastic debris. A strong correlation between the microplastics (MPs) distribution and the metal concentrations in the soil profile. Metals in the highest concentrations corresponded to the most significant plastic additives.
View Article and Find Full Text PDFIntroduction: High salt intake is a major risk factor for hypertension and its complications such as chronic kidney disease (CKD) and cardiovascular diseases. The present study aimed to determine level of sodium consumption and its relation with kidney function in the rural populations of Ferlo (centre of Senegal).
Subjects And Methods: We performed a cross-sectional study including 400 volunteers aged > 18 years.