The heavy metal contents (Cr, Cu, Zn, Cd, Pb, Hg, and As) of 88 surface sediment samples from the western Sunda Shelf were analyzed to determine their spatial distribution patterns and contamination status. The results demonstrated that high enrichment regions of heavy metals were focused in the Kelantan, Pahang, and Ambat river estuaries, and deep water regions of the study area. These high enrichment regions were mainly controlled by riverine inputs and their hydrodynamic conditions. The enrichment factor (EF), geoaccumulation index (I_geo), and potential ecological risk index (PERI) were used to assess heavy metal accumulation. The results indicated that the study area was not significantly contaminated overall at the time of the study; however, Cd, As, and Hg were at levels corresponding to moderate contamination at many stations located in the Pahang River estuary, Kelantan River estuary, and north-eastern region of the study area, primarily because of anthropogenic activities.

分析了Sun他架西部的88个表面沉积物样品中的重金属含量（Cr，Cu，Zn，Cd，Pb，Hg和As），以确定它们的空间分布模式和污染状况。结果表明，重金属的高富集区域集中在吉兰丹，彭亨和安巴特河河口以及研究区域的深水区域。这些高富集区主要受河流输入及其水动力条件控制。富集因子（EF），_地质积累指数（I _geo）和潜在生态风险指数（PERI））被用来评估重金属的积累。结果表明，在研究时，研究区域总体上没有受到严重污染。然而，由于人为活动，在彭亨河河口，吉兰丹河河口和研究区东北地区的许多站点中，镉，砷和汞的含量与中等污染水平相对应。