Article

Environmental Monitoring of Heavy Metals in Bulgarian Black Sea Green Algae

Bulgarian Academy of Sciences, Ulpia Serdica, Sofia-Capital, Bulgaria
Environmental Monitoring and Assessment (Impact Factor: 1.68). 07/2005; 105(1-3):99-110. DOI: 10.1007/s10661-005-3158-3
Source: PubMed

ABSTRACT Fe, Mn, Cu, Pb and Cd concentration distribution in six green macroalgae species from the Bulgarian Black Sea coast were determined. The measurement of these metals was carried out during six seasons from 1996 to 2002 using atomic absorption spectrometry (AAS). Samples were collected from eight different sites-Shabla, Kaliakra, Tuzlata, Ravda, Ahtopol and Sinemoretz. The obtained heavy metal (HM) data (mean values microg/g) for all algae are: 650 +/- 100 for Fe, 184 +/- 15 for Mn, 5.6 +/- 0.5 for Cu, 3.3 +/- 0.3 for Pb and 1.1 +/- 0.2 for Cd. The obtained HM contents indicate that different species demonstrate various degree of metal accumulation and the obtained higher values in the northern sector of the studied zone can be attributed to the discharge influence of the big rivers, entering the Black Sea-Danube, Dnyepr, Dnester and local pollutant emissions. All data show that there is no serious contamination in green macroalgae with heavy and toxic metals along the whole Bulgarian Black Sea coast.

3 Followers
 · 
315 Views
  • Source
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: In recent years, considerable interest has arisen with regard to the fate and transport of radionuclides such as iodine-131 (131I), cesium-134 (134Cs) and cesium-137 (137Cs) in aquatic environments. 137Cs is an important indicator of radioactive pollution in aquatic environments. The transport and fate of anthropogenic 137Cs is related to the chemical properties of ionic Cs (Cs+), which generally dictates a high degree of mobility and bioavailability of this radionuclide. The transport of 137Cs and its partitioning between abiotic and biotic components of aquatic ecosystems are complex processes that are considerably affected by a number of factors such as mineralogical composition of suspended and bottom sediments and the characteristic geochemistry of water. These factors influence sorption and desorption kinetics of 137Cs and the transport of particulate 137Cs. Nevertheless, substantial evidence suggests that direct biological 137Cs accumulation from the aquatic environment occurs readily in micro-organisms and aquatic plants. The evidence discussed in this work indicates that 137Cs is continuously re-circulated in biological systems for many years following a pulse of contamination. Possible remediation methods for the contaminated aquatic systems are also discussed. This review provides guidelines for future work plans for the study of the fate and transport of 137Cs in the aquatic environment in the wake of Fukushima Nuclear Power Plant disaster in 2011 and to provide answers to the urgent questions with respect to strategies for mitigating contamination and reducing radiation exposure for people living in the most affected regions of the world.
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: For the first time the concentration of 26 macro- and microelements (Na, Mg, Al, Cl, K, Ca, Sc, V, Mn, Fe, Co, Ni, Zn, As, Br, Rb, Sr, Sb, I, Cs, Ba, Sm, Nd, Ag, Au, and U) in the thalli of brown algae Cystoseira barbata C. Ag. and Cystoseira crinita (Desf.) Bory was determined by instrumental neutron activation analysis (INAA), Sevastopol region, south-western Crimea, the Black Sea. The observed peculiarities of the elemental accumulation showed that Cystoseira spp. can be used as a biomonitor of coastal waters pollution in the study area. Keywords: biomonitoring, trace elements, Cystoseira barbata, Cystoseira crinita, neutron activation analysis, Black Sea
    Ecological Chemistry and Engineering. S = Chemia i Inżynieria Ekologiczna. S 01/2014; 21(1):9-23. DOI:10.2478/eces-2014-0001 · 0.56 Impact Factor

Full-text

Download
234 Downloads
Available from
Jun 3, 2014