Heavy metal levels in selected leafy vegetables obtained from Local market of Dharmjaigarh, Chhattisgarh, India

2017 ◽  
Vol 10 (3) ◽  
pp. 354
Author(s):  
Milan Hait ◽  
Ashutosh Patel ◽  
Champa Singh Rajput
2012 ◽  
Vol 36 (4) ◽  
pp. 563-574 ◽  
Author(s):  
Habib Mohammad Naser ◽  
Sarmin Sultana ◽  
Nashir Uddin Mahmud ◽  
Rebeca Gomes ◽  
Shamsun Noor

Field experiment was conducted to compare and investigate the concentration  levels of heavy metals in leafy vegetables with growth stage and plant species  variations on an experimental field near the net house of Soil Science Division,  Bangladesh Agricultural Research Institute, Joydebpur, Gazipur, Bangladesh  during November 2008 to January 2009. Seeds of spinach (Spinacia oleracea), red amaranth (Amaranthus tricolor) and amaranth (Amaranthus oleraseus) were  sown on 14 November 2008. Plant and soil samples were collected at different  growth stages, such as at 20, 30, 40, and 50 days after sowing (DAS). The  concentrations of lead (Pb), cadmium (Cd), nickel (Ni), cobalt (Co), and  chromium (Cr) in plant increased with the age of the plant, but the increase was  not linear. The rate of increase of concentration of these metals at 20 to 30 DAS  was found lower than that at 30 to 40 DAS, except Cr. Heavy metal content  gradually increased at the early growing stage and fall during later stages of  growth. The significant differences (P < 0.01) were observed between the mean  metal concentrations in the three vegetables species. The Pb and Co  concentrations in amaranth were found higher compared to those found in  spinach and red amaranth. Spinach exhibited higher levels of Cd and Cr than  those of other vegetables. However, the three vegetables did not differ  significantly in its Ni concentration. The order of heavy metal level in different  vegetables was Cd<Co<Pb<Ni<Cr. In vegetable species in respect of heavy  metal concentration Cd, Ni, and Cr was highest in spinach and amaranth showed  highest concentration in Pb and Co. The highest correlation between soil-plant  was found for Cd, while the lowest for Ni. Metal concentrations in the  vegetables studied were found lower than the maximum allowable level in India  but the concentrations of Cd and Cr were higher than the allowable levels set by  the World Health Organization (WHO).   DOI: http://dx.doi.org/10.3329/bjar.v36i4.11743   Bangladesh J. Agril. Res. 36(4): 563-574, December 2011    


2010 ◽  
Vol 5 (3-4) ◽  
pp. 421-428 ◽  
Author(s):  
Neriman Bagdatlioglu ◽  
Cevdet Nergiz ◽  
Pelin Gunc Ergonul

1977 ◽  
Vol 12 (1) ◽  
pp. 213-232 ◽  
Author(s):  
N.D. Yan ◽  
W.A. Scheider ◽  
P.J. Dillon

Abstract Intensive studies of Nelson Lake, a Sudbury area lake of intermediate pH ~5.7), were begun in 1975. The chemistry of the lake was typical of that of most PreCambrian Shield lakes except that low alkalinities and high sulphate concentrations were observed along with elevated heavy metal levels. After raising the pH of Nelson Lake to 6.4 by addition of Ca(OH)2 and CaCO3, the metals were reduced to background concentrations. Phytoplankton and Zooplankton communities, which at pH of 5.7 were typical of PreCambrian lakes, were not affected by the experimental elevation of lake pH.


2018 ◽  
Vol 12 (2) ◽  
pp. 169-172 ◽  
Author(s):  
Mustafa Sevindik ◽  
Hasan Akgul ◽  
Celal Bal ◽  
Deniz Altuntas ◽  
Ali Imran Korkmaz ◽  
...  

2021 ◽  
Vol 45 (1) ◽  
Author(s):  
Elijah Abakpa Adegbe ◽  
Oluwaseyi Oluwabukola Babajide ◽  
Lois Riyo Maina ◽  
Shola Elijah Adeniji

Abstract Background Heavy metal accumulation in the ecosystem constitutes a potential toxic effect which is hazardous to human health. Increasing environmental pollution has necessitated the use of cattle egrets to evaluate the levels of heavy metal contamination, to establish their use in biomonitoring of heavy metals and to provide data for monitoring pollution in the environment. Results The present study assessed the utilization of Bubulcus ibis in monitoring pollution in five abattoirs, namely Agege, Bariga, Kara, Itire and Idi-Araba, all situated in Lagos State. The concentration of five (5) heavy metals, cadmium (Cd), copper (Cu), nickel (Ni), lead (Pb) and zinc (Zn) was determined in the liver, muscle and feather of Bubulcus ibis using the atomic absorption spectrophotometer. The trend of metal accumulation was in the order: Zn > Cu > Pb > Cd > Ni for all the sampled tissues. The mean tissue concentrations of the metals were significantly different (p < 0.05) among the sites. The highest levels of metal concentration were reported in the liver in all the locations. Mean concentration of Cd in Kara (0.003 ± 0.00058) was significantly (p < 0.05) higher than those found at Agege (0.0013 ± 0.00058) and Idi-Araba (0.001 ± 0.001). A significant difference (p < 0.05) was also observed between the mean concentrations of Cu in Bariga (0.01 ± 0.001) and Idi-Araba (0.003 ± 0.001). Conclusion All the studied heavy metals were present in the liver, muscle and feathers of the cattle egrets. The contamination levels were ascertained from the study which indicated that cattle egrets are useful in biomonitoring studies and the generated data will serve as baseline data which could be compared with data from other locations for monitoring heavy metal pollution.


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