Geochemical speciation and risk assessment of heavy metals in the surface sediments of Jemberau Lake, Tasik Chini, Malaysia

Nimisha Krishnankutty, Mushrifah Idris, Firdaus Mohamad Hamzah, Neethu Vijayan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The mine tailings from the iron ore mining in Jemberau catchment, Tasik Chini is directly seeping into Laut Jemberau. The caustic red sludge which consists of trace amounts of heavy metals from the mining site is also being washed and ultimately gets accumulated in the lake sediment. Under favorable conditions, the heavy metals are remobilized to the aquatic system, causing danger to the benthic organisms. Hence, a risk assessment study of surface sediment was conducted at Laut Jemberau, Tasik Chini. The results suggested that Mn, Co, and Cd are the most easily exchangeable metals in the sediment. Among these metals, the concentration of Mn (mean value = 12.04 ppm ± 13.25) is higher and it has adverse effect on aquatic biota. The risk assessment code (RAC) results also identified that the risk associated with Co, Cd, Mn are highly dangerous due to its high bioavailability and labiality in Jemberau aquatic system. The closer vicinity of mining site poses higher risk in comparative to other sampling stations. The geoaccumulation index (Igeo) shows that level of contamination in surface sediment due to anthropogenic activities is extremely higher especially in S2- near to mining site.

Original languageEnglish
Title of host publication2016 UKM FST Postgraduate Colloquium: Proceedings of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology 2016 Postgraduate Colloquium
PublisherAmerican Institute of Physics Inc.
Volume1784
ISBN (Electronic)9780735414464
DOIs
Publication statusPublished - 17 Nov 2016
Event2016 Postgraduate Colloquium of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology, UKM FST 2016 - Selangor, Malaysia
Duration: 13 Apr 201614 Apr 2016

Other

Other2016 Postgraduate Colloquium of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology, UKM FST 2016
CountryMalaysia
CitySelangor
Period13/4/1614/4/16

Fingerprint

Malaysia
risk assessment
heavy metals
lakes
sediments
bioavailability
iron ores
sludge
organisms
metals
hazards
alkalies
contamination
stations
sampling

Keywords

  • heavy metal
  • risk assessment
  • sediment
  • speciation
  • Tasik Chini

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Krishnankutty, N., Idris, M., Mohamad Hamzah, F., & Vijayan, N. (2016). Geochemical speciation and risk assessment of heavy metals in the surface sediments of Jemberau Lake, Tasik Chini, Malaysia. In 2016 UKM FST Postgraduate Colloquium: Proceedings of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology 2016 Postgraduate Colloquium (Vol. 1784). [060023] American Institute of Physics Inc.. https://doi.org/10.1063/1.4966861

Geochemical speciation and risk assessment of heavy metals in the surface sediments of Jemberau Lake, Tasik Chini, Malaysia. / Krishnankutty, Nimisha; Idris, Mushrifah; Mohamad Hamzah, Firdaus; Vijayan, Neethu.

2016 UKM FST Postgraduate Colloquium: Proceedings of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology 2016 Postgraduate Colloquium. Vol. 1784 American Institute of Physics Inc., 2016. 060023.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Krishnankutty, N, Idris, M, Mohamad Hamzah, F & Vijayan, N 2016, Geochemical speciation and risk assessment of heavy metals in the surface sediments of Jemberau Lake, Tasik Chini, Malaysia. in 2016 UKM FST Postgraduate Colloquium: Proceedings of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology 2016 Postgraduate Colloquium. vol. 1784, 060023, American Institute of Physics Inc., 2016 Postgraduate Colloquium of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology, UKM FST 2016, Selangor, Malaysia, 13/4/16. https://doi.org/10.1063/1.4966861
Krishnankutty N, Idris M, Mohamad Hamzah F, Vijayan N. Geochemical speciation and risk assessment of heavy metals in the surface sediments of Jemberau Lake, Tasik Chini, Malaysia. In 2016 UKM FST Postgraduate Colloquium: Proceedings of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology 2016 Postgraduate Colloquium. Vol. 1784. American Institute of Physics Inc. 2016. 060023 https://doi.org/10.1063/1.4966861
Krishnankutty, Nimisha ; Idris, Mushrifah ; Mohamad Hamzah, Firdaus ; Vijayan, Neethu. / Geochemical speciation and risk assessment of heavy metals in the surface sediments of Jemberau Lake, Tasik Chini, Malaysia. 2016 UKM FST Postgraduate Colloquium: Proceedings of the Universiti Kebangsaan Malaysia, Faculty of Science and Technology 2016 Postgraduate Colloquium. Vol. 1784 American Institute of Physics Inc., 2016.
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