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Bourgeoning impact of the technology critical elements in the marine environment
1Department of Chemistry, Kuwait University, Khaldiya Campus, Safat, 13060, Kuwait.
Abstract:
Contamination of the Technology Critical Elements (TCE) through e-wastes and beach plastic wastes are some of the attributes to the recent rise in marine pollution. A generalized study of pollutants in the marine waters showed no evidence of the effect of TCE. However, an in-depth study revealed the mean TCE concentrations in the sequence of gallium (Ga) > thallium (Tl) > niobium (Nb) > tellurium (Te) > tantalum (Ta) > germanium (Ge) > indium (In) in wastewater (0.38 ng.L-1) >sediment (0.3 ng g-1) e-wastes (0.29 ng g-1) > coastal water (0.26 ng.L-1) > plastic wastes (0.133 ng g-1) >fish (0.13 ng g-1). The mean site-wise analysis of all the samples showed high TCE during winter than in the summer seasons as well, in the sequence of Site-II>Site-I>Site-V>Site-IV>Site-III. The mean distribution coefficient (Kd) of TCE was high in the summer (1.95) than during the winter (1.60) seasons but, the reverse seasonal effects were observed with the bioavailability (%BA) and geo-accumulation index (Igeo). This index quantified TCE in e-wastes and plastic materials. Furthermore, these indicators labeled TCE as one among the sources for 'Fish Kill,' a futuristic threat to seafood consumers and a biomonitoring tool to marine pollution.
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