Biomonitoring agent for heavy metals run off from acid sulfate soil of aquaculture industries in Selangor, Malaysia
The disturbance of acid sulfate soils due to poor wastewater management of aquaculture activities caused a major environmental issue such as metal pollution in coastal regions of many countries over the world. Peninsular Malaysia also challenged the same problem where it lost 18700 ha of coastal...
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| Main Authors: | , , |
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| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
2014
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/37959/1/37959.pdf http://irep.iium.edu.my/37959/ http://www.globalilluminators.org/wp-content/uploads/2013/10/proceeding1.pdf |
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| Summary: | The disturbance of acid sulfate soils due to poor wastewater management of aquaculture
activities caused a major environmental issue such as metal pollution in coastal regions of many
countries over the world. Peninsular Malaysia also challenged the same problem where it lost
18700 ha of coastal lowlands from 1980 to1990.This activity caused the oxidation of pyrite
which produces high concentrations of ferrous ions, and sulfuric acid, in turn attacks clay
minerals and produces high concentrations of monomeric aluminum (Al) and other acidsoluble
metals. Subsequent leaching of these toxic products into adjacent water bodies is
rapidly increasing the stress on ecosystems. Therefore, the research was aimed to monitor
heavy metal runoff from acid sulfate soil at shrimp aquaculture areas through phytotechnology
approach. The study was conducted at fourteen different sites in Selangor which contains large
amount of acid sulfate soil. The result showed that Pistiastratiotes was substantially the best
phytoindicator for Al, iron (Fe) and manganese (Mn) toxicity followed by Lemna.minor,
Nymphaeastellata, and Urticulataaurea. On the other hand,N.stellatawas observed to be best
phytoindicatorfor nickel (Ni), whereas for arsenic (As) was Ludwigiapalustris. Among these
six species, the most potential biomonitoring agent to indicate acid-soluble metals are
P.stratiotesand N.stellataas they are presence in low D.O level, high pH, high concentration of
ammonium and tolerance to Al, Fe, Mn, and Ni. |
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