Trace Elements in Mediterranean Mussels Mytilus galloprovincialis from the South African West Coast

Abstract

TRACE ELEMENTS IN MEDITERRANEAN MUSSELS Mytilus galloprovincialis FROM THE SOUTH AFRICAN WEST COASTPIERWIASTKI ŚLADOWE W ŚRÓDZIEMNOMORSKICH MAŁŻACH Mytilus galloprovincialis Z POŁUDNIOWEGO WYBRZEŻA AFRYKI ZACHODNIEJ Abstract: Invasive bivalve molluscs, Mediterranean mussels (Mytilus galloprovincialis) were used as sentinel biomonitors of pollution by inorganic contaminants in Saldanha Bay and the Langebaan Lagoon area of South Africa. Two complementary analytical techniques, ICP-MS and NAA, allowed for determination of concentrations of 31 major and trace elements including heavy metals and arsenic in the soft tissues of the mussels. Distinct seasonal patterns were found in the dynamics of these concentrations, with the mussels accumulating much more trace elements in winter than in the summer. In general, the mussels that grew naturally also demonstrated higher concentrations of As, Cd, Fe, Hg and Zn than those that were farmed. Fe showed the highest levels with a maximum concentration of 444 mg/kg followed by Zn with a maximum of 228 mg/kg. The concentrations of Mn and Pb were significantly higher in the Port of Saldanha close to the jetty where ores containing these metals are loaded in comparison with the other sampling sites. It was concluded that bivalve molluscs present themselves as effective biomonitors when assessing marine aquatic pollution by inorganic contaminants in the Saldanha Bay region.

Herbicides in Camps Bay (Cape Town, South Africa), supplemented

“…The authors of the rebuttal demanded that our study should extend to a much wider geographical area. Such studies are available for metal contaminants in mussels in Saldanha Bay versus Danger Bay, which was chosen as a remote control site (Bezuidenhout et al, 2015). Yet their studies showed that metal concentrations were higher at the control site than at the sampling sites Hence control sites in remote locations can also bring surprises.…”

Determination of heavy metals in mussels Mytilus galloprovincialis Lamarc using the IСP-AES method

“…Выбор определяемых элементов был сделан с учетом анализа литературных данных и проведенных нами экспериментальных исследований [4,35]. В иссле-дуемых пробах моллюсков определяли 14 элемен-тов (As, Ba, Cd, Co, Cr, Cu, Fe, Hg, Ni, Pb, V, Sr, Zn, Mn) методом атомно-эмиссионной спектрометрии с индуктивно-связанной плазмой с использованием спектрометра iCAP-6500 (Thermo Scientific, США).…”

“…Располагая данными о накопле-нии тяжелых металлов в теле моллюсков, особенно в створках, можно судить о качестве среды в водо-еме [2][3][4][5][6][7] не только в период съемки, но и за период жизни моллюска. Моллюски рода Mytilus -мидии -широко распространены в Мировом океане [7][8][9][10]; в Черноморско-Азовском бассейне обитает черномор-ская мидия Mytilus galloprovincialis Lamarck, они явля-ются признанными индикаторами антропогенного за-грязнения прибрежных вод Мирового океана, а также применяются в системе биологического контроля ка-чества среды [11].…”

“…в мидии тяжелые металлы накапливаются не селективно, а комплексно. Лишь авторы [4] при проведении ис-следований привлекали сочетание методов ПААС, ЭТААС и масс-спектрометрии с индуктивно-связан-ной плазмой (ИСП-МС) при определении больше-го перечня элементов. В настоящей работе нами проведена оптимизация условий определения тя-желых металлов в мидии Mytilus galloprovincialis Lamarck методом ИСП-АЭС на примере акватории Азово-Черноморского бассейна.…”

Accumulation Features of Micro and Macroelements in Indigenous and Alien Molluscs in Saldanha Bay, South Africa

“…Our previous studies determined the ranges of elemental concentrations in Mediterranean mussels at different sites in and around Saldanha Bay [13,14]. In the current work, samples of indigenous mussels (CM), alien mussels (MG) and alien oysters (CG) at three key sites in the Saldanha Bay were chosen to be sampled in order to demonstrate the interspecies differences between them and their ability to be used as biomonitors of macro and microelements in the coastal zones.…”