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Concentration of Heavy Metal in Natural Sediment from Setiu Wetland and
Its Toxicity on Chironomus Kiiensis
Kee Chia Soon
Supervisor: Dr. Nurulnadia binti Mohd Yusoff
Bachelor of Science (Marine Science)
School of Marine and Environmental Sciences
Universiti Malaysia Terengganu
This study was conducted to determine the toxicity of metals concentration in Setiu
Wetland sediment on Chironomus kiiensis. The toxicity test was conducted following
OECD no. 218 guideline with end point of the larvae emerged as midge or dead. Metals
concentration in sediment was determined using inductively coupled plasma mass
spectrometry. Based on this study, mortality of C. kiiensis larvae was strongly
correlated to Pb, Zn, Mn, Fe and Al (r=0.88 to 0.99) means they were potentially
affected by the concentration of metals. Total organic carbon and mean particle size
of sediment were also determined and showed strong positive correlation between
TOC (r=0.87) and mean particle size (r=0.93) with mortality of C. kiiensis. These
suggest that both TOC and mean particle size could affect the mortality of C. kiiensis
as well. This study justify that toxicity test using natural sediment from Setiu Wetland
showed toxicity effects towards C. kiiensis.
1869 | UMT UNDERGRADUATE RESEARCH DAY 2018