Study the accumulation of minerals and heavy metals in Ulva algae, Cladophora, Polysiphonia and Laurencia algae samples at eastern north region of Libya coast

Different minerals including ( Na⁺, K⁺ and Ca⁺⁺) in addition to ( iron and copper) were determined in different algae samples collected from some region at Al –Gabal Al –Khder coast region (Libya). The algae samples including (Ulva algae, Cladophora algae, Polysiphonia algae and Laurencia algae).The mineral contents were measured by Flamephotometer, while the (iron and copper) levels were estimated by spectrophotometeric method. The results showed variations between the contents of the studied algae samples. Where the results showed that the contents of sodium, calcium and potassium were fluctuated in the ranges of: (24 – 91 µg/ g) (4 – 13 µg/ g) and (3 – 16 µg/ g), respectively. While the contents of iron and copper were ranged between: (0.14 - 1.64 µg/ g) and (0.21 - 2.27 µg/ g), respectively.