ESTIMATION OF BIOACCUMULATION, TRANSLOCATION AND DISTRIBUTION PATTERNS OF CADMIUM AND LEAD IN COMMONLY CONSUMED GREEN LEAFY VEGETABLES IN COLOMBO DISTRICT, SRI LANKA

MATTER: International Journal of Science and Technology

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Title ESTIMATION OF BIOACCUMULATION, TRANSLOCATION AND DISTRIBUTION PATTERNS OF CADMIUM AND LEAD IN COMMONLY CONSUMED GREEN LEAFY VEGETABLES IN COLOMBO DISTRICT, SRI LANKA
 
Creator Kananke, Thilini C.
Wansapala, Jagath
Gunaratne, Anil
 
Subject Green Leafy Vegetables
Distribution
Bioaccumulation
Heavy Metals
Cadmium
Lead
 
Description Green Leafy Vegetables (GLV) are a key component of the Sri Lankan diet. However, GLV are identified as good heavy metal accumulators, which in turns causes potential health risks for consumers through food chain contaminations.  The present study aimed to investigate the bioaccumulation, translocation and distribution patterns of cadmium (Cd) and lead (Pb) in five key Sri Lankan GLV ["Kankun" (Ipomoea aquatica), “Mukunuwenna (Alternanthera sessilis), “Thampala” (Amaranthus viridis), “Nivithi” (Basella alba) and “Kohila” (Lasia spinosa)] grown in Colombo District, Sri Lanka. The levels of Cd and Pb in different plant parts (roots, stems and leaves) and the soil underneath were determined using the inductively coupled plasma optical emission spectroscopy (ICP-OES) and the bioaccumulation and translocation factors of heavy metals from soil to different plants parts (roots, stems, leaves), were calculated to identify the hyper accumulative species. Irrespective of the species and the location, GLV showed the distribution pattern for Cd and Pb as: roots>stems>leaves. In all the analyzed GLV, roots have accumulated significantly higher concentrations (at P<0.05) of Cd and Pb compared with stems and leaves. Among the two heavy metals, Cd bioavailability was higher compared with Pb. Amaranthus viridis had the lowest capacity for metal enrichment. In contrast, Lasia spinosa showed the highest bioaccumulation factors for both elements and the accumulation factor obtained for Cd (1.04) was >1. Thus, Lasia spinosa has the potential to use in phytoextraction purposes in future, though it is not safe to consume as a day to day food item.  Article DOI: https://dx.doi.org/10.20319/mijst.2018.42.93112 This work is licensed under the Creative Commons Attribution-Non-commercial 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc/4.0/ or send a letter to Creative Commons, PO Box 1866, Mountain View, CA 94042, USA.
 
Publisher Global Research & Development Services Publishing
 
Date 2018-08-23
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
 
Format application/pdf
 
Identifier https://grdspublishing.org/index.php/matter/article/view/1487
10.20319/mijst.2018.42.93112
 
Source MATTER: International Journal of Science and Technology; Vol 4 No 2 (2018): Regular Issue; 93-112
2454-5880
 
Language eng
 
Relation https://grdspublishing.org/index.php/matter/article/view/1487/1263
 
Rights Copyright (c) 2018 Author(s)
 

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