Preliminary Study of Heavy Metals in Water Lily Plants around Kota Samarahan Area
Water lily plants have many uses such as fragrance essence, cuisines, and also act as phytoremediation agent for heavy metals in aquatic ecosystems. The objectives of this study were to determine the concentrations of selected heavy metals; Lead (Pb), Mercury (Hg), Nickel (Ni), Arsenic (As), Zinc...
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| Format: | E-LPTA |
| Language: | English English |
| Published: |
Universiti Malaysia Sarawak, (UNIMAS)
2014
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| Subjects: | |
| Online Access: | http://ir.unimas.my/id/eprint/8275/1/Preliminary%20Study%20of%20Heavy%20Metals%20in%20Water%20Lily%20Plants%20Around%20Kota%20Samarahan%20Area%2824pgs%29.pdf http://ir.unimas.my/id/eprint/8275/2/Preliminary%20Study%20of%20Heavy%20Metals%20in%20Water%20Lily%20Plants%20Around%20Kota%20Samarahan%20Area.pdf http://ir.unimas.my/id/eprint/8275/ |
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| Summary: | Water lily plants have many uses such as fragrance essence, cuisines, and also act as phytoremediation agent for heavy
metals in aquatic ecosystems. The objectives of this study were to determine the concentrations of selected heavy metals;
Lead (Pb), Mercury (Hg), Nickel (Ni), Arsenic (As), Zinc (Zn) and Copper (Cu), and to find out the differences of these
metal Bioaccumulation Factor (BAF) in water lily plants. Three species of water lily were found in this study and were
identified as Nymphaea lotus, Nymphaea pubescens and Nymphaea capensis. Three study locations were chosen in Kota
Samarahan area. Three samples were taken which were water lily plant, sediment and water. Plant samples were
separated according to their parts prior to analyse (e.g. flower, stem, root and leaves). Heavy metals content were
analysed using Atomic Absorption Spectroscopy (AAS) and Hg was analysed using Flow Injection Mercury Systems
(FIMS 400) analyser. All types of heavy metals were detected in plant samples except Pb that only detected in sediment
samples. In general, highest concentration of heavy metals detected in root (Zn; 113.33 mg/kg; N. capensis samples; Lake
B), stem (Zn; 86.11 mg/kg; N. pubescens samples; Ditch C) and leaves (Cu; 0.23 mg/kg; N. lotus samples; Lake B).
Comparison of level of pollution between three study locations was done by comparing the heavy metals that content in
the sediment and water samples. Metal concentrations between study locations followed the order of Ditch C > Lake B >
Lake A. The concentration of heavy metals content in sediment and water samples of all study locations were below
toxicity level. BAF value were different between the water lily plant part and species. BAF values were only obtained for
Ni and Zn because the concentration for Pb, Hg, As and Cu were Below Detection Limit (BDL). The highest percentage
of BAFs for Ni was 187.86% in root part of N. capensis while for BAFs of Zn, the highest percentage was 369.18% in
leaves of N. capensis. |
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