Document Detail

Copper and lead levels in two popular leafy vegetables grown around Morogoro Municipality, Tanzania.
MedLine Citation:
PMID:  17058799     Owner:  NLM     Status:  MEDLINE    
A study was carried out to determine the levels of two heavy metals, Lead (Pb) and Copper (Cu), in two popular leafy vegetables grown around Morogoro Municipality in Tanzania. Vegetable samples of Pumpkin leaves (Cucurbita moschata) and Chinese cabbage (Brassica chinensis) were collected from three sites and analysed for their concentrations of the two metals using an Atomic Absorption Spectrophotometer. The three sites, namely Mazimbu, Kihonda and Towelo are located within a 10 km perimeter. The site selection was based on the anticipated levels of contamination of the water used for irrigation. The results showed that the levels (mg/100g dry weight) ranged from 0.885 to 1.39 for Copper and 0.05 to 0.315 for Lead. The levels of Lead and Copper varied between the vegetable varieties and from site to site. Vegetables from Mazimbu showed higher concentration levels of the two metals compared to the other sites in both varieties. Towelo vegetables had relatively low concentrations. There was a significant difference (P < 0.05) in levels of the two metals across the sites but there was no significant difference (P > 0.05) in the levels of Copper between the two vegetable varieties from all the three sites. There was a significant difference (P < 0.05) in the levels of Lead between the vegetable varieties. The levels of both Lead and Copper in the two vegetables were found to be below the maximum permissible levels recommended by FAO/WHO for the two metals in vegetables.
B E Chove; W R Ballegu; L M Chove
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Tanzania health research bulletin     Volume:  8     ISSN:  0856-6496     ISO Abbreviation:  -     Publication Date:  2006 Jan 
Date Detail:
Created Date:  2006-10-23     Completed Date:  2006-11-02     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  101262014     Medline TA:  Tanzan Health Res Bull     Country:  Tanzania    
Other Details:
Languages:  eng     Pagination:  37-40     Citation Subset:  IM    
Department of Food Science and Technology, Sokoine University of Agriculture, P.O. Box 3006, Morogoro, Tanzania.
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MeSH Terms
Brassica / chemistry*
Copper / analysis*
Cucurbita / chemistry*
Food Analysis
Food Contamination / analysis*
Lead / analysis*
Plant Leaves / chemistry
Spectrophotometry, Atomic
Reg. No./Substance:
7439-92-1/Lead; 7440-50-8/Copper

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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