HEAVY METALS ACCUMULATION IN PADDY CULTIVATION AREA OF KOMPIPINAN, PAPAR DISTRICT, SABAH

Abstract

Heavy metals contamination in paddy feld was conducted using Oryza sativa. Paddy plants and their soil were sampled along seven transverse lines of the paddy feld before the harvesting time. The paddy plants were separated into roots, stems, leaves and grains. Metal concentrations of the samples were carried out using ICP-OES Spectrometer machine OPTIMA 5300 DV. Metals enrichment factor and translocation were also measured in this study. The results showed that the plant roots of Oryza sativa accumulated relatively large amount of lead, cadmium, chromium and copper, while the stem accumulated large amount of zinc. The correlation test showed that there was a strong correlation of zinc and cadmium concentrations in Oryza sativa with the paddy soil. Enrichment factor (EF) showed that lead, cadmium and copper were concentrated in the root of Oryza sativa, while chromium and zinc metals were more concentrated in the shoot part. In addition, the translocation factor (TF) showed that Oryza sativa was able to transfer zinc and chromium from root to the shoot part of Oryza sativa.