Evaluation of heavy metals pollution status in sediments of Calabar River, South-South Nigeria Turning Point from Vision to Action

2019 ◽  
Vol 8 (3) ◽  
Keyword(s):  
Heavy Metals ◽  
Turning Point ◽  
Pollution Status ◽  
Metals Pollution ◽  
Heavy Metals Pollution

scholarly journals Heavy Metals Contamination of Agricultural Land and Their Impact on Food Safety

2021 ◽  
pp. 104-111
Author(s):  
Murtala Muhammad ◽  
I. Y. Habib ◽  
Ismail Hamza ◽  
Tasiu A. Mikail ◽  
Abdulmumin Yunusa ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Food Safety ◽  
Health Risk ◽  
Soil Water ◽  
Health Risks ◽  
Agricultural Land ◽  
Risk Index ◽  
Pollution Status ◽  
Metals Pollution ◽  
Heavy Metals Pollution

Aims: The aim of this study is to investigate the heavy metals pollution status and health risks assessment of the vegetables grown at Danbatta irrigation lands. Study Design: The research involved the collection of soil, water and cultivated vegetable from irrigation lands as well as analyzing their heavy metals pollution status. Place and Duration of Study: Samples were collected from Danbatta irrigation lands of Kano state, Nigeria. The research study covered a period of one year. Methodology: This study investigates the prevalence of heavy metals pollution and related health risks associated with the vegetables grown at Danbatta local government of Kano state. This was achieved by collecting irrigation soil, water and vegetables (onion, spinach and lettuce) from the irrigation sites, which were subsequently assayed for several heavy metals such as; Pb, Mn, Cu, Fe, Zn and Co using atomic absorption spectrophotometry (AAS). Results: The results obtained show that the concentrations of Pb, Cu and Zn in water samples to be 0.033, 0.8, and 0.89 mg/ml, respectively, while Mn and Co were not detected. Even though concentrations of these metals in water are within FAO/WHO limits, the soil was found to be contaminated with Cu (12.17 mg/kg), Fe (152.29 mg/kg) and Zn (55.75 mg/kg). Furthermore, both spinach, lettuce and onion were contaminated with Pb, and Mn. However, only lettuce and spinach were contaminated with Cu, Fe and Zn. Health risk assessment of both adults and children show that Pb, Mn, Co and Cu, posed a significant health risk to the population as their health risk index (HRI) is greater than one. The result shows that poor agricultural practices could be responsible for contaminating the soil with heavy metals, which eventually gets accumulated in the edible parts of the plants and posed a great risk to its consumers. Impacts of heavy metals pollution is on the rise across the globe. As such, it becomes necessary to monitor our environment to checkmate the threat of these contaminants and implement a reliable strategy and stable treatment of the pollution to ensure food safety.

scholarly journals Research on heavy metals pollution status of Le'an River, Lake Poyang Basin

2007 ◽  
Vol 19 (4) ◽  
pp. 421-427 ◽  
Author(s):  
WAN Jinbao ◽  
◽  
YAN Weiwei ◽  
XIE Ting
Keyword(s):  
Heavy Metals ◽  
Pollution Status ◽  
Metals Pollution ◽  
Lake Poyang ◽  
Heavy Metals Pollution

scholarly journals Evaluation of Heavy Metals Pollution Status of the Groundwater around Riruwai Mining Area, Kano State, Nigeria

2021 ◽  
Vol 2 (3) ◽  
pp. 23-28
Author(s):  
H. Badamasi ◽  
U. F. Hassan ◽  
H. M. Adamu ◽  
N. M. Baba
Keyword(s):  
Heavy Metals ◽  
Water Samples ◽  
Mining Area ◽  
Physical Parameters ◽  
Well Water ◽  
Pollution Status ◽  
Metals Pollution ◽  
Sampling Locations ◽  
Heavy Metals Pollution ◽  
Dry And Rainy Seasons

The aim of this study was to investigate the heavy metals pollution status of the groundwater of Riruwai mining area, Kano State, Nigeria. A total of 31 groundwater samples were collected from five sampling locations which include: underground mining site (RGWI), tap water, (RGW2), surface mining ponds (RGW3), borehole (RGW4) and the well water samples (RGW5) during the dry and rainy seasons. The concentrations of seven heavy metals (As, Cd, Cr, Hg, Mn, Pb and Zn) and some physical parameters (pH, EC, and TDS) were determined using Atomic Absorption Spectrometer and Deluxe Water and Soil Analysis Kit respectively. The results of the analysis revealed that pH, EC and TDS were within the desirable limits recommended by WHO and NSDWQ in all sampling locations except in RGW1 and RGW3 for both seasons. The concentrations of heavy metals ranged as follow: As (ND to 0.15), Cd (ND to 0.1), Cr (ND to 0.25), Hg (ND to 0.09), Mn (0.12 to 0.66), Pb (0.003 to 0.06) and Zn (2.29 to 11.75), and As (0.005 to 020), Cd (0.001 to 0.15), Cr (0.001 to 0.17), Hg (ND to 0.14), Mn (0.16 to 0.92), Pb (0.007 to 0.09) and Zn (2.85 to 14.05) during the dry and rainy seasons respectively. The heavy metals concentrations changed along with the sampling sites in decreasing order of RGW1 > RGW2 > RGW3 > RGW4 > RGW5 in both seasons. The concentrations of all heavy metals were above the desirable limits recommended by WHO and NSDWQ during both seasons except well water samples (RGW5) and some few locations where the heavy metals were not detected. Therefore, it is recommended that water resources of the Riruwai mining area should be monitored closely, and more efforts should be made to reduce heavy metals concentrations level, particularly As, Cd, Cr and Zn.

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