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.

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    • "It is known that some metal compounds (e.g., iron and manganese), which are considered to be indispensable microelements in the growth of algae, are generally detected in source water, especially in eutrophic lakes and reservoirs [41] [42] [43]. For example, total iron and manganese concentrations were reported to range from 0.28 to 0.89 mg L -1 and from 0.20 to 0.56 mg L -1 , respectively in Taihu Lake of China [20]. "

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