Metals and their ecological impact on beach sediments near the marine protected sites of Sodwana Bay and St. Lucia, South Africa

Vetrimurugan, E.; Shruti, V.C.; Jonathan, M.P.; Roy, Priyadarsi D.; Rawlins, B.K.; Rivera-Rivera, D.M.

doi:10.1016/j.marpolbul.2017.12.044

Cited by 30 publications

(7 citation statements)

References 62 publications

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“…Previous studies conducted in this area revealed that groundwater is highly contaminated with iron, rendering it unfit for various uses (Demlie et al 2014). The ecological impact of metals in beach sediments in marine protected areas shows enrichment of metals which are due to the heavy mineral rich coastal dunes and past mining activities (Vetrimurugan et al 2018). The concentrations of cadmium, zinc, lead, manganese, aluminium and iron exceeded the limits of World Health Organization (WHO) standards for drinking water quality of the Maputaland coastal aquifer (Mthembu et al 2020).…”

Section: Introductionmentioning

confidence: 95%

“…However, the accumulation of heavy metals in ecosystem is exacerbated by anthropogenic activities (Ukah et al 2019) which are classified as essential (copper, chromium, cobalt, iron, manganese and zinc) and non-essential (arsenic, cadmium and lead) (Çiner et al 2020;Brindha et al 2020). Some heavy metals are required in small amounts for human body building, however, excess consumption of such heavy metals can be detrimental to health and environment (Haloi and Sarma 2012;Chanpiwat et al 2014;Li et al 2014;Boateng et al 2015;Vetrimurugan et al 2018;Xiao et al 2019).…”

Section: Introductionmentioning

confidence: 99%

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Integration of Heavy Metal Pollution Indices and Health Risk Assessment of Groundwater in Semi-arid Coastal Aquifers, South Africa

Mthembu

Elumalai

et al. 2021

Preprint

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The metal contaminated groundwater results in serious health issues and hence this study attempts to address metal contamination and its sources by using integrated techniques including indexed and statistical methods and its related health hazards. Groundwater pH varied from 5.3 to 8.3 indicating acidic to alkaline in nature. Heavy metal evaluation index and degree of contamination reveal that all the groundwater samples fall under low pollution and are appropriate for human consumption. According to the pollution index majority of the samples fall in the insignificant pollution zone. Water quality index reveal that 19% and 2% of the groundwater samples belong to the poor and very poor water quality category and are spatially situated on the central, northern and southern parts of the study region. Correlation matrix and principal component analysis reveal that weathering of aquifer matrix and anthropogenic activities are accountable for the release of heavy metals into groundwater. Furthermore, R-mode and Q-mode cluster analysis revealed two clusters which are linked to mixed sources including weathering and anthropogenic activities. Based on the hazard quotient the order of heavy metal impact is: Co>Pb>Cd>Zn>As>Mn>Cu>Cr>Fe>Ni for both children and adult. The hazard index values varied from 0.06 to 8.16 for children and from 0.02 to 2.14 for adult. In this study, it is discovered that 43% and 26% of groundwater samples pose non-carcinogenic health risk in children and adult, respectively. This study highly recommends treatment of contaminated groundwater before consumption in order to protect and maintain the public health.

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Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Integration of Heavy Metal Pollution Indices and Health Risk Assessment of Groundwater in Semi-arid Coastal Aquifers, South Africa

Mthembu

Elumalai

et al. 2021

Preprint

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“…Global studies related to trace elements analysis on beaches focus on assessing the changes in trace element concentrations in the context of the influence of local pollution sources such as mining sites, urban areas, and industrial complexes [28,29,[36][37][38] or tourism [39][40][41]. Several studies analysing the migration and distribution of trace elements in coastal environments have been conducted; e.g., the distribution of trace elements concentrations across (from the beach to dunes) [42] and along the coast [38,[43][44][45][46][47][48] and vertical migration [49]. All overviewed studies intended to identify the source or how the particular pollution source affects beach sediments, but the coastal processes were not deeply analysed.…”

Section: Introductionmentioning

confidence: 99%

The Impact of Coastal Geodynamic Processes on the Distribution of Trace Metal Content in Sandy Beach Sediments, South-Eastern Baltic Sea Coast (Lithuania)

Karlonienė¹,

Pupienis

Jarmalavičius

et al. 2021

Applied Sciences

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Sandy coasts are one of the most dynamic spheres; continuously changing due to natural processes (severe weather and rising water levels) and human activities (coastal protection or port construction). Coastal geodynamic processes lead to beach sediment erosion or accumulation. The coast’s dynamic tendencies determine the changes in the volume of beach sediments; grain size; mineralogical; and geochemical composition of sediments. In addition to lithological and mineralogical analysis of sediments, geochemical analysis can provide valuable information about the local and regional patterns of sediment transport, distribution, provenance, and coasts’ conditions. The study aims to assess trace metals’ temporal and spatial distribution determined in the sandy beach sediments along the south-eastern Baltic Sea coast (Lithuania) during 2011–2018. The Lithuanian seacoast is divided into two parts: mainland and spit coast. Our results revealed that the dominant group of elements on the mainland includes Ca–Mg–Mn–Ti and on the Curonian Spit Fe–Pb–As–Co–Cr–Ni–Al, which remain unchanged during the years. The analysis included additional parameters such as beach volume, grain size and sorting, and heavy mineral concentration on the beach. The spatial analysis of trace elements indicated that the trace metal content depends on the coastal processes, but it differs in the mainland and spit sea coast. We identified a higher concentration of trace metals in the erosion-dominated areas in all analysed years on the mainland coast. On the spit coast, the trace metal concentration increased in areas associated with relict coarse sand and where the loading of sediments was active on the beach due to the northward along-shore transport.

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“…Metal contaminants in coastal sediments are precipitated by adsorption, hydrolysis, and co-sedimentation, while a small fraction of free metal ions remain in the water column. However, when environmental conditions such as pH change, the metals in the sediment enter the water, as a result, the sediments can also act as a secondary source of metals [8]. Since more than 90% of heavy metal pollution entering the marine ecosystem originates from terrestrial sources [9], the coastal sediments are often referred to as heavy metal reservoirs or inlets [9].…”

Section: Introductionmentioning

confidence: 99%

Determination and investigation of heavy metal concentrations in sediments of the Persian Gulf coasts and evaluation of their potential environmental risk

Allami

Afzali

Mirzaei

2020

Anal. Method Environ. Chem. J.

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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).

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Metals and their ecological impact on beach sediments near the marine protected sites of Sodwana Bay and St. Lucia, South Africa

Cited by 30 publications

References 62 publications

Integration of Heavy Metal Pollution Indices and Health Risk Assessment of Groundwater in Semi-arid Coastal Aquifers, South Africa

Integration of Heavy Metal Pollution Indices and Health Risk Assessment of Groundwater in Semi-arid Coastal Aquifers, South Africa

The Impact of Coastal Geodynamic Processes on the Distribution of Trace Metal Content in Sandy Beach Sediments, South-Eastern Baltic Sea Coast (Lithuania)

Determination and investigation of heavy metal concentrations in sediments of the Persian Gulf coasts and evaluation of their potential environmental risk

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