Heavy metal accumulation of Danube river aquatic plants — indication of chemical contamination

2008 ◽  
Vol 3 (3) ◽  
pp. 285-294 ◽  
Author(s):  
Slobodanka Pajević ◽  
Milan Borišev ◽  
Srđan Rončević ◽  
Dragana Vukov ◽  
Ružica Igić

AbstractIn this paper, the ecological status of a section of the Danube River flowing through Serbia from Bezdan to Djerdap was evalutated. Using the chemical composition of water, sediment samples from the littoral zone and dominant aquatic macrophytes, the level of chemical pollution was ascertained. Chemical analyses of the water and sediment indicated that the tributaries flowing into the Danube significantly influenced the chemical load of the water and as a direct consequence, the sediment. The concentration of heavy metals including Cu, Mn and Cd found in plants of the Potamogeton genus, further indicated significant chemical pollution, establishing a clear link between the chemical composition of plant tissues and the chemical composition of water and sediment. This paper therefore describes how the chemical composition of aquatic plants can be used as a reliable indicator for heavy metal pollution of aquatic ecosystems.

Author(s):  
Noureddine Guezgouz ◽  
Costantino Parisi ◽  
Soumaya Boubsil ◽  
Gaetano Grieco ◽  
Soualah Alila Hana ◽  
...  

Abstract Our study attempted to monitor the quality of water in Medjarda basin (Northeastern Algeria) and to provide baseline information of heavy metals in the water as well as in a potential amphibian biosentinel, the spiny toad, Bufo spinosus. We measured pH, temperature, dissolved oxygen and biological oxygen demand of water and levels of heavy metals in toad skin using an atomic absorption flame spectrophotometer. Lead (Pb) concentration in water and in toad skin at all sites exceeded respectively 60 and 96 times the standard reference values. The heavy metal concentrations, in descending order, in water and in male toad skin were as follows: Pb > Fe > Cu > Zn and Fe > Pb > Zn > Cu respectively. This study highlights the ecological status of the surrounding areas upstream of the Medjarda basin as being a point source of heavy metal pollution. It is further stated that a non-invasive skin removal is an ethically sound technique to evaluate heavy metal accumulation in aquatic animals like toad, without euthanizing the specimens and making any loss to biodiversity of the species.


Toxics ◽  
2021 ◽  
Vol 9 (12) ◽  
pp. 360
Author(s):  
Mohammad Main Uddin ◽  
Mohamed Cassim Mohamed Zakeel ◽  
Junaida Shezmin Zavahir ◽  
Faiz M. M. T. Marikar ◽  
Israt Jahan

Aquatic ecosystems are contaminated with heavy metals by natural and anthropogenic sources. Whilst some heavy metals are necessary for plants as micronutrients, others can be toxic to plants and humans even in trace concentrations. Among heavy metals, cadmium (Cd), arsenic (As), chromium (Cr), lead (Pb), and mercury (Hg) cause significant damage to aquatic ecosystems and can invariably affect human health. Rice, a staple diet of many nations, and other aquatic plants used as vegetables in many countries, can bioaccumulate heavy metals when they grow in contaminated aquatic environments. These metals can enter the human body through food chains, and the presence of heavy metals in food can lead to numerous human health consequences. Heavy metals in aquatic plants can affect plant physicochemical functions, growth, and crop yield. Various mitigation strategies are being continuously explored to avoid heavy metals entering aquatic ecosystems. Understanding the levels of heavy metals in rice and aquatic plants grown for food in contaminated aquatic environments is important. Further, it is imperative to adopt sustainable management approaches and mitigation mechanisms. Although narrowly focused reviews exist, this article provides novel information for improving our understanding about heavy metal accumulation in rice and aquatic plants, addressing the gaps in literature.


2020 ◽  
Vol 22 (1) ◽  
Author(s):  
Dunya A. Al-Abbawy ◽  
BASIM M. HUBAIN AL-THAHAIBAWI ◽  
ITHAR K.A. AL-MAYALY ◽  
KADHIM H. YOUNIS

Abstract. Al-Abbawy DAH, Al-Thahaibawi BMH, Al-Mayaly IKA, Younis KH. 2021. Assessment of some heavy metals in various aquatic plants of Al-Hawizeh Marsh, southern of Iraq. Biodiversitas 22: 338-345. In order to describe the degree of contamination of aquatic environments in Iraq, heavy metals analysis (Fe, Ni, Cr, Cd, Pb, and Zn) was conducted for six aquatic macrophytes from different locations of Al-Hawizeh Marsh in southern Iraq. The six species were Azolla filiculoides (floating plant), Ceratophyllum demersum, Potamogeton pectinatus, Najas marina (submerged plants), Phragmites australis, and Typha domingensis (emergent plants). The results indicate that cadmium, chromium, and iron concentrations in aquatic plants were above the World Health Organization (WHO). In contrast, zinc, copper, and lead were within the allowable limits. C. demersum and N. marina showed higher concentrations of heavy metal accumulation than the other aquatic plants. The concentration of heavy metals in plant tissues during the summer months was higher than in the different seasons. C. demersum and N. marina showed higher concentrations of heavy metal accumulation than the other aquatic plants. Heavy metal bioconcentration (BCF) was calculated to assess heavy metals bioaccumulation in the aquatic plants.


Author(s):  
Li Bai ◽  
Xiao-Long Liu ◽  
Jian Hu ◽  
Jun Li ◽  
Zhong-Liang Wang ◽  
...  

We investigated the concentrations of 10 heavy metals in Potamogeton malaianus, Nymphoides peltata, Eichhornia crassipes, and Hydrilla verticillata to evaluate their potential to bioaccumulate heavy metals and related influencing factors in Taihu Lake. Enrichment factor (EF) values of Cu, Cr, Mn, Ni, Zn, Co, Pb, and V were above 2.0, indicating moderate to significant contamination in sediment. Most of Ti, V, Cr, Mn, and Ni in P. malaianus, E. crassipes, and H. verticillata and V in N. peltata were within excess/toxic level in plants, but higher than normal level. Even though no aquatic plants in this study were identified as a hyperaccumulator, relatively higher concentrations in aquatic plants were found in Taihu Lake than have been found in other previous studies. Heavy metal in submerged plants, especially in their stems, seemed to be more closely related to metals in water and sediment than those in floating-leaf plants. Ratios of metals in stem versus leaves in all plants ranged from 0.2 to 25.8, indicating various accumulation capabilities of plant organs. These findings contribute to the application of submerged aquatic plants to heavy metal removal from moderately contaminated lakes.


2014 ◽  
Vol 25 (1) ◽  
pp. 53-58
Author(s):  
Katya Peycheva ◽  
Lubomir Makedonski ◽  
Albena Merdzhanova ◽  
Mona Stancheva

Abstract River ecosystems are vulnerable to heavy metal pollution. Fish samples are considered as one of the most indicative factors, in fresh water systems, for the estimation of trace metals pollution potential since they are the final chain of aquatic web. The objective of the present study is to evaluate the concentration of some toxic elements (As, Hg, Pb, Cd and Ni) in edible part of three wild fresh water fish species (zander (Sander lucioperca), wels catfish (Silurus glanis) and European carp (Cyprinus Carpio)) caught from Bulgarian part of Danube river collected during 2010. The Danube River is the European Union's longest and the continent's second longest river that passes through or touches the borders of ten countries. It has a great importance in regard to biodiversity, economics and transportation. The elements (As, Pb, Cd and Ni) were assayed using Perkin Elmer Zeeman 3030 electrothermal atomic absorption spectrometer with an HGA-600 atomizer. Determination of Hg was performed using Milestone Direct Mercury Analyzer DMA-80. The results were expressed as μg/g dry weight. The order of heavy metal accumulation in the edible part of zander is As>Hg>Pb> Ni> Cd while the other two fish species show a different metal accumulation Hg > As >Pb> Ni > Cd. In all heavy metals, the accumulation of mercuric and arsenic proportion was significantly high in all three fish types.


2015 ◽  
Vol 4 (2) ◽  
pp. 103-106
Author(s):  
Cristina Andreevna Kosacheva ◽  
Marina Yuryevna Garitskaya ◽  
Alina Ivanovna Baitelova ◽  
Lyudmila Andreevna Pikus

Environmental pollution by industrial enterprises, leading to its degradation and impairing the health of the population remains an urgent concern of environmental social and economic importance. At present, more and more land is subject to man-made factors that alter the chemical composition of the soil. All this is the result of agricultural use of various pesticides, fertilizers, plant growth stimulants. But beyond that, many an important role in soil pollution are industrial emissions. This article examines the impact of the enterprise for the production of mineral fertilizers - JSC Meleuz Minetal Fertilizers - the quality of soil and environmental situation developing at a location nearby. On a functional purpose, this area is an area of growing crops. Not very safe is that this site is located within the boundaries of the sanitary protection zone. Monitoring of soil at an early stage allows you to track incipient changes in the environment. To assess the ecological status of the study area were determined indicator of chemical pollution of soils sampled at different distances from the plant, and the ranking according to the degree of ecological trouble. The results of the analysis showed that the highest concentrations of pollutants found in soil samples taken at the minimum distance from the plant. This confirms the impact on the territory of priority chemical plant emissions. Ranking in terms of chemical contamination of soils indicates that the territory adjacent to the JSC Meleuz Mineral Fertilizers, at all distances studied, should be referred to an area with critical ecological situation.


Sign in / Sign up

Export Citation Format

Share Document