English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The concentration of heavy metals (Cu, Zn, Fe, Mn and Pb) in soil and tobacco wastes from Mwele and Kichangani in Morogoro Municipality were analyzed using X-Ray Fluorescent (XRF) technique. The mean levels in the soil in mg/kg dry mass at ‘Mwele garden were Cu(54.62), Zn(119.37), Fe(49211.93), Mn(989.89) and Pb(14.41), that of Kichangani were Cu(13.39), Zn(15.12), Fe(7657.11), Mn(154.65) and Pb(6.20), that of tobacco wastes piles were Cu(11.30), Zn(27.33), Fe(2272.10), Mn(280.02) and Pb(0.69). The concentrations at the three sites displayed a similar trend; Fe >Mn > Zn >Cu >Pb while among the sites levels were in the trend Mwele > Kichangani >tobacco waste piles. The higher levels of residues at Mwele compared to Kichangani suggested significant contribution from the wastes piles. The higher residue levels at Mwele garden than at the piles suggested the high accumulation over years at Mwele gardens. The levels were within the permissible levels (TBS) but suggesting a long term environmental pollution risk due to continuing piling up of the residues. The study suggested thorough study of the routes of metal cycling on the area and hence carry out environmental impact and risk assessment.

Heavy Metal Loading in Agricultural Soils; Contribution of Tobacco Wastes. A Case Study of Morogoro Municipality, Tanzania