Distribution of trace elements in the marine sediments along the South China Sea, Malaysia

Abstract

In order to complete having data base of elemental assessment of the east coast of Peninsular Malaysia marine sediments along the South China Sea coasts, trace elements are analyzed and their distribution in marine sediments is undertaken. The present study is done parallel with pervious study on elemental assessment of heavy metals, rare earth elements and actinides in the marine sediments of the east coast of Peninsular Malaysia. Thirty surface sediment samples were collected in this area, including regions of Kelantan, Terengganu, Pahang, Rompin and Johor Baharu. Multielemental analysis was carried out by instrumental neutron activation analysis and inductively coupled plasma atomic emission spectroscopy. In both cases methodology validation was performed by certified reference material analyses. For the surface elemental distributions the enrichment factor values, average I geo and mC d values indicate that the trace elements of the surface sediments are uncontaminated in all sampling stations that are consistent with previous studies results of heavy metals, rare earth elements and actinides.

Beryllium Levels in the Mangrove Snail Nerita lineata and Surface Sediments from Peninsular Malaysia Mangrove Area

“…Sultancity and is located 4 km downstream of a Be smelting industry which stopped its operation in 1975. However, the present Be ranges are higher than Tokyo Bay and Sagami Bay sediments, Japan (Asami & Fukazawa 1985), South China Sea offshore (Rezaee et al 2011) and surface soils of Indonesia, New Zealand, Brazil and former USSR (Asami & Kubota 1995), but within the average natural soils concentrations (2000-6000 μg/kg dw; Kabata-Pendias & Mukherjee 2007) and far below the Pyroclastic Rocks (8100-79000 μg/kg dw; Armiento et al 2013) which is related to Pleistocene activity of the Vico volcano and Be levels in four Piedmont soil profiles in the USA (6300-30500 μg/kg dw; Anderson et al 1990). The bioconcentration factor (BCF), a value that represents the concentration ratio of Be (concentration in the soft tissues/total concentration in sediment) in naturally habitats of the snails were determined and are also presented in Table 1.…”

Heavy Metal Distribution in Opportunistic Beach Nourishment: A Case Study in Greece

“…Heavy metals enter the marine environment through natural processes such as erosion of ore-bearing rocks, wind-blown dust, volcanic activity, and wildfires and through atmospheric and riverine deposition and direct discharges or dumping. Sewage and industrial waste from coastal cities and direct agricultural runoff to the sea add to problem [ 6 ]. The high toxicity, nonbiodegradability, and bioaccumulation [ 7 ] of such discharges can substantially degrade the host coastlines.…”

Disponibilidade dos metais Cd e Pb e do metalóide As na bacia hidrográfica do Rio Ribeira do Iguape e afluentes: uma avaliação da contaminação ambiental

“…O índice de geoacumulação tem sido usado desde a década de 60 e tem sido largamente empregado em estudos de metais traço na Europa (YAQIN et al, 2008). Foi utilizado pela primeira vez para sedimentos de fundo (MÜLLER, 1969) e desde então tem sido aplicado, com sucesso, para medidas de contaminação de solo (LOSKA et al, 2003;YAQIN et al, 2008) e sedimentos (GOMES et al, 2009;REZAEE et al, 2011). Os valores de Igeo são classificados segundo a Tabela 3.9 quanto ao nível de poluição.…”