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If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, withing 24 hours on weekdays.
Customer service
All questions about your order, return and delivery must be sent to our customer service team by e-mail at yourstore@yourdomain.com
Sale & Press
If you are interested in selling our products, need more information about our brand or wish to make a collaboration, please contact us at press@yourdomain.com
Ten different species of trees from 3 sampling zones were taken in Yobe State, north east, Nigeria. The bark and the soil around these trees were analysed for heavy metals: Zinc, Lead, Iron, Manganese, Chromium, Cobalt and Nickel, employing atomic absorption spectrophotometry. The results of the analysis indicate various concentration levels and different sources of the heavy metals of interest. All the values obtained correlate well with the anthropogenic sources and are within the acceptable limits. The statistical comparison of the values between the bark and soil shows correlation at P
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