Sediment Heavy Metal Contents, Ostracod Toxicity and Risk Assessment in Tropical Freshwater Lakes, Tamil Nadu, India

2020 ◽  
Vol 30 (2) ◽  
pp. 231-252
Author(s):  
Periyasamy Sivalingam ◽  
Dhafer Mohammed M. Al Salah ◽  
John Poté
Keyword(s):  
Risk Assessment ◽  
Heavy Metal ◽  
Tamil Nadu ◽  
Freshwater Lakes ◽  
Metal Contents ◽  
Tropical Freshwater

scholarly journals Health Risk Assessment of Heavy Metals in Traditional Cosmetics Sold in Tunisian Local Markets

2016 ◽  
Vol 2016 ◽  
pp. 1-12 ◽  
Author(s):  
Mohamed Anouar Nouioui ◽  
Salah Mahjoubi ◽  
Asma Ghorbel ◽  
Marouen Ben Haj Yahia ◽  
Dorra Amira ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Risk Assessment ◽  
Heavy Metal ◽  
Health Risk ◽  
Atomic Absorption ◽  
Good Manufacturing Practice ◽  
Potential Threat ◽  
Analytical Test ◽  
Metal Contents ◽  
Cu And Zn

This study was undertaken in order to determine heavy metal contents in twelve (n=12) henna brands and eleven (n=11) kohl products. An analytical test was performed for Pb, Cd, Cu, and Zn in henna and kohl products using atomic absorption spectrophotometery. The overall mean concentrations of heavy metals in henna varied between 1.2 and 8.9 μg g−1 for Pb; 0.8 and 18.6 μg g−1 for Cd; 0.5 μg g−1 and 3.3 μg g−1 for Cu; and 3.7 μg g−1 and 90.0 μg g−1 for Zn. As for kohl products, Pb concentrations ranged between 51.1 μg g−1 and 4839.5 μg g−1, Cd concentrations ranged between 1.0 μg g−1 and 158.6 μg g−1, Cu concentrations ranged between 2.5 μg g−1 and 162.5 μg g−1, and Zn concentrations ranged between 0.7 μg g−1 and 185.0 μg g−1. The results of our study revealed that Pb, Cd, Cu, and Zn contents in investigated samples were high, making from the prolonged use of such products a potential threat to human health. Therefore, major quality controls are recommended in order to enforce acceptable limits of potential contaminants in cosmetics and good manufacturing practice.

Risk assessment of heavy metal contamination in Danube sediments from Hungary

1998 ◽  
Vol 37 (6-7) ◽  
pp. 273-281 ◽  
Author(s):  
K. Gruiz ◽  
A. Murányi ◽  
M. Molnár ◽  
B. Horváth
Keyword(s):  
Risk Assessment ◽  
Heavy Metal ◽  
Metal Contamination ◽  
Heavy Metal Contamination ◽  
Biological Effects ◽  
Contaminated Sediments ◽  
Photobacterium Phosphoreum ◽  
Strong Basis ◽  
Ecotoxicological Effects ◽  
Metal Contents

The aim of the current research is to establish a suitable Environmental Risk Assessment (ERA) scheme for Danube sediments in Hungary by determining contaminants' concentrations by chemical analysis and by assessing their ecotoxicological effects. Seventeen sedimentation sites were identified, mainly upstream of Budapest, between river kilometres 1811 and 1586. The heavy metal contents and basic properties of sediments were determined. Excess heavy metal content was used to characterize the extent of heavy metal contamination. Direct contact biotests were developed for testing the toxic effect of contaminated sediments. Ecotoxicological effects were measured by three bacterial tests and one plant bioassay. Effect Concentrations were determined by the inhibition of the bioluminescence of Photobacterium phosphoreum. The resultant inhibition of different partial toxic effects was characterized by Cu equivalent. Chemical and ecotoxicological results were studied together, making it possible to characterize the extent of the pollution and its biological effects at the same time. It was concluded that combined chemical and ecotoxicological characterization of contaminated sediments may serve as a strong basis for assessing the site-specific risk of heavy metal pollution.

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