Hazards due to Polycyclic Aromatic Hydrocarbons (PAHs) and heavy metals at the closed Kubang Badak landfill, Selangor
Demand on redevelopment of a closed landfill is increasing due to limited land resources. However, the hazards of a closed landfill remain unknown. Thus, there is a need to assess the health hazard for a closed landfill to ensure its suitability for future development. The aim of this study is to ev...
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| Main Authors: | , |
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| Format: | Conference or Workshop Item |
| Published: |
2010
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/1628/ http://eprints.uthm.edu.my/1628/1/Amani_Filzah_(FKAAS)_CSSR2010.pdf |
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| Summary: | Demand on redevelopment of a closed landfill is
increasing due to limited land resources. However, the
hazards of a closed landfill remain unknown. Thus,
there is a need to assess the health hazard for a closed
landfill to ensure its suitability for future
development. The aim of this study is to evaluate the
distributions and hazards based on soil samples taken
from a closed landfill located at Kubang Badak,
Selangor, with specific focus on Polycyclic Aromatic
Hydrocarbons (PAHs) and heavy metals. A total of
ten soil samples were collected using hand auger.
PAHs were extracted using Microwave Assisted
Extraction (MAE) and analysed using Gas
Chromatography-Mass Spectrometer, while heavy
metals were digested with MAE and analysed using
Inductively Coupled Plasma. Concentrations of PAHs
were compared to guidelines from Canada,
Netherlands and Denmark. Concentrations of heavy
metals were compared to guidelines from United
Kindom.. Results showed that 12 PAHs compounds
were distributed consistently except for phenanthrene
and anthracene. Most abundant was phenanthrene
with an average value of 62.02 μg/kg. For heavy
metals, Zn was found the most abundant ranging
from 256.9-666.05 mg/kg. This is followed by Mn
(29.05-262.5 mg/kg), V (3.85-174.65 mg/kg), Ga (34.4-
182 mg/kg), Rb (63.7-135.8 mg/kg), Cr (37.8-136.85
mg/kg), Sr (0-158.2 mg/kg), Mg (16.1-173.6 mg/kg),
Cu (0-201.6 mg/kg) and Pb (0.7—89.25 mg/kg). Two
heavy metals, i.e. Cr and As were found to have
concentrations above concentration limits permissible
for residential activities. Whilst PAHs compounds
were distributed uniformly, heavy metals were not.
Based on the findings, landfill area is not suitable for
residential area development as concentrations of Cr
and As are above permissible limits. |
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