Research Article
Irrigation and Its Impacts on the Water Resource of Lake Kankossa in Mauritania
Brahim Ahmed Dick*
,
Mohamed lemine Mohamed Hmeid,
Mohamed Salem Mohamed Salem,
Mewgef el Ezza Dite Hanan Djieh,
Yahya Maham Ould Sidi,
Meiloud Ghlana,
Hassan Chaair
Issue:
Volume 14, Issue 2, June 2025
Pages:
17-22
Received:
5 April 2025
Accepted:
28 April 2025
Published:
26 May 2025
Abstract: The aim of this study is to assess the physico-chemical quality of water from Lake Kankossa in Mauritania, used for irrigation and agricultural re. Sampling campaigns were carried out during February and 2024. The sampling sites are: E1:Kankoussa, E2: Elhachai, E3:Elmaghtaa 1, E3:Elmaghtaa2. In this work, we studied the hydrochemistry of the waters of Lake Kankossa, in Mauritania. The aim of the study was to assess the physico-chemical quality of the lake's water for human consumption and irrigation. To this end, we carried out physico-chemical analyses to assess the risks of contamination on the lake's water quality. Samples were taken during the 2024 summer season at four stations located on the shores of Lake Kankossa. Physico-chemical parameters measured included: temperature, pH, turbidity, electrical conductivity, total dissolved solids, total hardness, calcium, magnesium, sodium, potassium, chlorides, nitrates, nitrites, ammonium, sulfates, total copper, iron, oxidizability, alkalinity and total alkalinity. These analyses were carried out using techniques such as volumetric analysis, spectroscopy and flame atomic absorption spectrometry. Statistical analysis of the results, compared with WHO standards for drinking water, revealed a significant deterioration in water quality in Lake Kankossa. The results showed that the concentration of most physico-chemical parameters complied with WHO standards. However, all parameters studied comply with WHO criteria for drinking water, with the exception of certain parameters, such as turbidity (486.25 NTU), potassium (24.5 mg/L) and nitrite (0.4 mg/L), which do not meet WHO standards. Appropriate treatment is recommended to render these waters potable. The graphical representation of the results of the Kankossa lake water analyses on the Riverside and Wilcox diagram shows that Kankossa lake water is of good quality for irrigation.
Abstract: The aim of this study is to assess the physico-chemical quality of water from Lake Kankossa in Mauritania, used for irrigation and agricultural re. Sampling campaigns were carried out during February and 2024. The sampling sites are: E1:Kankoussa, E2: Elhachai, E3:Elmaghtaa 1, E3:Elmaghtaa2. In this work, we studied the hydrochemistry of the waters...
Show More
Research Article
Synthesis and Characterisation of Sudan Red-G/Cyclodextrin Doped ZnO Nanocrystals
Issue:
Volume 14, Issue 2, June 2025
Pages:
23-32
Received:
17 April 2025
Accepted:
27 April 2025
Published:
20 June 2025
DOI:
10.11648/j.ajpc.20251402.12
Downloads:
Views:
Abstract: Sudan Red-G/cyclodextrin-doped zinc oxide nanocrystals are synthesized and characterized by UV-visible, fluorescence, FTIR, DTA, XRD, SEM, and TEM methods. Solvent and cyclodextrin studies confirm the existence of the azo-hydrazo tautomer in the SRG molecule. The ground and excited state absorption wavelengths of SRG are similar to Red G, Sudan I, and Sudan II. The dipole moment, internal energy, free energy, enthalpy, entropy, and the HOMO-LUMO energy levels of SRG, α-CD, β-CD, SRG/α-CD, and SRG/β-CD are determined using the PM3 method. SRG's horizontal bond length is higher than the α-CD and β-CD cavity size, only a partial inclusion of the SRG molecule occurs in the CD. Absorption and emission spectral shifts are largely varied when SRG/CD doped on ZnO. Compared to SRG and ZnO/β-CD, the ZnO/SRG/β-CD nanocrystals showed significant differences in the FTIR, DTA and XRD peaks, indicating that SRG and β-CD were successfully doped onto the ZnO nanoparticles. TEM morphology supports the formation of nanocrystals in the SRG/CD doped ZnO. The nanocrystal sizes are analyzed using TEM-EDS and XRD techniques.
Abstract: Sudan Red-G/cyclodextrin-doped zinc oxide nanocrystals are synthesized and characterized by UV-visible, fluorescence, FTIR, DTA, XRD, SEM, and TEM methods. Solvent and cyclodextrin studies confirm the existence of the azo-hydrazo tautomer in the SRG molecule. The ground and excited state absorption wavelengths of SRG are similar to Red G, Sudan I, ...
Show More
