Latest Issue
Study on Mechanical Structure Design for Plug-and-play Wheel Mobile Robot
Published: December 31,2023PI Controller for Velocity Controller Design based on Lumped Parameter Estimation: Simulation and Experiment
Published: December 31,2023Attitude Estimation by using Unscented Kalman Filter with Constraint State
Published: December 31,2023Characterization Study of Cambodian Natural Rubber and Clay Composites for Shock Absorption Floor Mat
Published: December 31,2023Selection of Observed Gridded Rainfall Data for different Analysis Purposes in Cambodia
Published: December 31,2023An Empirical Investigation of Gold Price Forecasting Using ARIMA Compare with LSTM Model
Published: December 31,2023Prediction of California Bearing Ratio with Soil Properties of Road Subgrade Materials in Cambodia
Published: December 31,2023Non-intrusive Load Monitoring Classification Based on Multi-Scale Electrical Appliance Load Signature
Published: December 31,2023The Study of Cereals Price Prediction in Terms of Trade Flows for Anticipate Price Fluctuations in Cambodia by Using ARIMA Model
Published: December 31,2023Development of Control Framework Based on ROS Platform for a 3-Axis Gimbal
Published: December 31,2023Study on Nutrients and Heavy Metals in Bottom Sediment of Tonle Sap Lake
-
1. Faculty of Chemical and Food Engineering, Institute of Technology of Cambodia, Russian Ferderation Blvd., P.O. Box 86, Phnom Penh, Cambodia
Received: April 11,2021 / Revised: Accepted: May 15,2021 / Published: June 29,2021
Tonle Sap Biosphere Reserve (TSBR) is a seasonally inundated freshwater lake in South-East Asia. Nowadays, TSBR is very concerned with many influence factors especially the contaminants (nutrients and heavy metals) in sediment that can cause water damage and water degradation in the lake. In this study, the concentrations of heavy metals and nutrients in fourteen bottom sediment samples in dry season from the lake were investigated to evaluate the level of the contaminant prior to the calculation of the Geo-accumulation Index Value by using the standard of World Surface Rock Average. The concentrations of heavy metals were analyzed by Atomic Absorption Spectrometry (AA-7000F) while the nutrient concentrations were analyzed by Ion Chromatography (LC-20ADsp). The result showed that the increasing concentrations (average) of trace metal elements were observed as followed Fe>Mn>Cu>Cr>Pb >Cd. The concentrations of cadmium in samples were under detection limit whereas the medians of other trace elements were 0.0269 mg/kg, 0.0272 mg/kg, 157.3523 mg/kg, 6.7070 mg/kg, and 0.0385 mg/kg for Cr, Cu, Fe, Mn, and Pb, respectively. The levels of trace metals in sediment samples were under the standard value of World Surface Rock Average, Mean Shale Concentration, and United State Enviromental Protection Agency except for the ion concentration of JS11 that exceed the standard of USEPA. For nutrients, the concentrations of nitrate and ammonia were detected through the IC within the median of 0.38 mg/L and 27.43 mg/L, respectively. The concentrations of ammonia and nitrate in sediment samples were acceptable except for the ammonia concentrations in sample JS2 and JS17 that were over the standard range. However, sediment pollution assessment was undertaken using the Geo-accumulation Index Value. The Geo-accumulation Index Values of heavy metal were negative and they are categorized to be the zero classification of Igeo. Therefore the sediment samples in Tonle Sap Lake are practically unpolluted and the sediment that located in this sampling zone are not strongly affect to the water quality of this study area.