Assessment of Some Toxic Metal Concentrations in Selected Ready-to-use Medicinal Plant Roots and Stem Barks in Ibadan, Nigeria
F. Offor Ifeanyi, C. Ehiri Richard, U. Etim Effiong
Journal of Scientific Research and Reports · pp. 427–436 · Published 5 Dec 2013
10.9734/JSRR/2014/5929Abstract
The aim of this study is to assess the concentrations of selected toxic metals (Cr, Ni, Cu, Zn and Cd) in some herbal plants sold in 3 markets within Ibadan, Nigeria. Sampling was done on a daily basis for 7 days in 2012. Blended plant samples were heated at 550ºC for 4 hours and digested using 2M HNO3. The extracts were subjected to Flame Atomic Absorption Spectrometry (FAAS) to determine their toxic metal concentrations. Metal recovery study was used to validate the analytical method. The concentration of Cu ranged from 0.04mg/kg in Olax subscorpioidea to 9.44mg/kg in Adansonia digitalia. For Zn, the concentration was lowest (0.94mg/kg) and highest (35.40mg/kg) in Senna podocarpa and Kigelia Africana respectively. Pb concentration ranged from 1.6mg/kg in Adansonia digitalia to 6.15mg/kg in Sphenocentrum jollyanum. Cr, Cd and Ni levels were below the detection limits [Cr (0.04mg/L), Cd (0.01mg/L) and Ni (0.10mg/L] of the spectrophotometer used. The mean Zn (8.04mg/kg) and Cu (1.80mg/kg) concentrations in the plants were above the World Health Organization (WHO) limits for Cu (0.3-1.0mg/kg) and Zn (0.05-0.5mg/kg) respectively in the plant roots and stem barks. Spearman partial correlation showed variation in selected trace metal (Cu and Zn) concentrations in the plant samples. Recovery study for Zn in Bridelia ferruginea and Adansonia digitalia were (94.85%) and (101.40%) respectively. On the average, the concentrations of toxic metals in the herbal plants studied were within WHO acceptable limits.
References (9)
- 1 Rhizofiltration: The Use of Plants to Remove Heavy Metals from Aqueous Streams [DOI]
- 2 Quantity estimation of some contaminants in commonly used medicinal plants in the Egyptian market [DOI]
- 3 The useful plants of West Tropical Africa. Vol. 2: Families E-I.
- 4 Profile of heavy metals in selected medicinal plants.
- 5 Essential and trace element contents of some Nigerian medicinal plants [DOI]
- 6 Dietary intake of lead and cadmium from foods in Tarragons Province, Spain [DOI]
- 7 Heavy Metal Contamination of Ready-to-use Herbal Remedies in South Eastern Nigeria [DOI]
- 8 Toxicological Problems Resulting from Exposure to Traditional Remedies and Food Supplements [DOI]
- 9 STUDY OF ANTI FUNGAL ACTIVITY AND SOME BASIC ELEMENTS OF MEDICINAL PLANT CRESSA CRETICA LINN AGAINST FUNGI CAUSING SKIN DISEASES
Cited by 1
G.U. Adie, Chidiebere C. Ogbonna
Related research
- Effects of Formaldehyde Exposure on Human Body-A Review Article — shares topic coverage
- Non-medical Application of Bacteria in Dyeing Textile — shares topic coverage
- Young People's Knowledge of the Consequences of Using Toxic Cosmetics — shares topic coverage
- Effect of 2,4-Dichlorophenoxyacetic Acid (2,4-D) and Dichlorvos (2,2-Dichlorovinyl Dimethyl Phosphate DDVP) on Soil Microorganisms — shares topic coverage
- Evaluation of Ameliorative Effects of Phyllantus amarus and Senna alata in Acetaminophen-induced Hepato-nephro Toxicity in Rats — shares topic coverage
Article metrics
Real usage data collected on this platform.
76
Page views
0
PDF downloads
36
Outbound clicks
1
Citations
Views over time
Views by country
Approximate, from request IP at view time — not citizenship or institution. Countries with fewer than 5 views are grouped as "Other".
Traffic sources
Referring site, by host.
Views and downloads exclude known bots/crawlers. Citations combines this platform's own DOI-resolved index with each external source's own reported total — see Cited by above for individually listed citing works. Last refreshed 0 seconds ago.