Mercury distribution in an invasive species (Asystasia gangetica) from Peninsular Malaysia

Chew, W and Yap, C.K and Ismail, A and Zakaria, M.P and Tan, S.G (2012) Mercury distribution in an invasive species (Asystasia gangetica) from Peninsular Malaysia. Sains Malaysiana, 41 (4). pp. 395-401. ISSN 0126-6039


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In this study, the Hg levels in eight parts of Asystasia gangetica (L.) T. Anderson collected from 14 sites were determined using a Mercury Atomizer MA-1S and a Mercury Detector MD-1. It was found that the ranges for all the parts were 3.21-18.2 μg/kg dry weight for flowers, 1.29-11.2 μg/kg dry weight forstalks, 0.32- 29.4 μg/kg dry weight for seeds, 0.87-10.2 μg/kg dry weight for pericarps, 1.45-18.1 μg/kg dry weight for remainders, 11.8-68.2 μg/kg dry weight for leaves, 0.73-20.9 μg/kg dry weight for stems, and 3.40-33.1 μg/kg dry weight for roots. The overall Hg accumulation pattern in decreasing concentrations was leaf > root > flower > flower remains > stalk > stem > pericarp > seed. This study provided the background levels of Hg in this non-native invasive weed species in Malaysia. However, further studies are needed to confirm it as a biomonitors of Hg in this region

Item Type:Article
Keywords:A. gangetica; biomonitor, Hg; Peninsular Malaysia
Journal:Sains Malaysiana
ID Code:3927
Deposited By: Mr Azam
Deposited On:26 Mar 2012 08:26
Last Modified:14 Dec 2016 06:35

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