Abstract
The contamination of coastal sediments with toxic heavy metals caused to a serious concern due to their environmental consequences. The aim of this study was to determine the concentration of heavy metals such as lead (Pb), copper (Cu), nickel(Ni) and manganese (Mn) in the sediments of the Persian Gulf coast in Kangan and Siraf ports in Bushehr province. In this regard, the sampling was performed in 10 stations with different uses in two depths of 0-5 and 5-20 cm along the coast of the Persian Gulf. The concentration of heavy metals was measured after drying, acid digestion and microwave by using flame atomic absorption spectrometry (F-AAS). The results showed that the average concentrations of Mn(II), Ni(II), Cu(II) and Pb(II) was measured 121.47, 11.51, 11.59 and 5.30 in surface sediments, and 131.59, 10.81, 12.56 and 4.88 µg g-1 in deep sediments. All analysis validated by electrothermal atomic absorption spectrometry (ET-AAS).
Highlights
Heavy metals as the inorganic pollutants are considered as one of the serious threats in natural ecosystems due to their non-degradability, theHeavy metal determination in sediments of the Persian Gulf aquatic ecosystem, a number of metals such as Zn, Fe, Mn and Ni are required for the activity of biological systems
Due to the lack of data on the abundance and distribution of heavy metals in sediments of the coastal areas of the world, especially the Persian Gulf coast, and the possible consequences of these pollutions, especially their negative impact on marine ecosystem and the life of living things, further studies on the extent of heavy metal pollution are necessary. The different techniques such as; flame atomic absorption spectrometry (F-atomic absorption spectrometer (AAS)), inductively coupled plasma-atomic emission spectrometry (ICP-AES), inductively coupled plasma spectrometry (ICP), inductively coupled plasma mass spectrometry (ICP-MS), electrothermal atomic absorption spectrometry (ETAAS) and others were used for determination heavy metals in water, industrial wastewater and sediment samples
The discharge of municipal and industrial wastewater has caused the presence of various pollutants, including heavy metals in the sediments of this area the objective of this study is to measure the concentration of heavy metals in the coasts of the Persian Gulf i.e Kangan and Siraf ports to estimate the extent of heavy metal pollution and evaluation of their potential environmental risk in the region
Summary
Heavy metals as the inorganic pollutants are considered as one of the serious threats in natural ecosystems due to their non-degradability, theHeavy metal determination in sediments of the Persian Gulf aquatic ecosystem, a number of metals such as Zn, Fe, Mn and Ni are required for the activity of biological systems. Due to the lack of data on the abundance and distribution of heavy metals in sediments of the coastal areas of the world, especially the Persian Gulf coast, and the possible consequences of these pollutions, especially their negative impact on marine ecosystem and the life of living things, further studies on the extent of heavy metal pollution are necessary The different techniques such as; flame atomic absorption spectrometry (F-AAS), inductively coupled plasma-atomic emission spectrometry (ICP-AES), inductively coupled plasma spectrometry (ICP), inductively coupled plasma mass spectrometry (ICP-MS), electrothermal atomic absorption spectrometry (ETAAS) and others were used for determination heavy metals in water, industrial wastewater and sediment samples. All heavy metals were determined by microwave digestion/acid digestion coupled to F-AAS
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