Environmental safety monitoring of heavy metals accumulation in some species of Sambucus L.

The aim in this work was to monitor heavy metals in plants of elderberry species. The objective of the research was to identify the actual concentrations of heavy metals in the fruits and leaves of the studied elderberry species. The need to determine deviations in the content of heavy metals in various parts of plants arose because the current ecological situation in Belgorod’s area requires special attention. The presence and concentration of heavy metals in different elderberry species and different parts of plants vary greatly and have the following features. Increased magnesium content was observed in almost all elderberry species, especially in red-fruited (Sambucus racemosa ‘Aurea’, S. sibirica Nakai, S. racemosa L., S. racemosa ‘Plumosa’, S. coreana Nakai), And its concentration much higher in fruits than in leaves. The highest deviation of the magnesium content from the norm was noted in the fruits and leaves of S. sibirica (2 and 1.5 times, respectively). Black elderberry species (S. nigra L., S. canadensis L., S. canadensis ‘Plumosa’) have a lower magnesium concentration in fruits and leaves. On the other hand, the concentration of copper in fruits and leaves in elderberry species is many times higher than the norm.

Accumulation and distribution of heavy metals in Gerres abbreviatus (Bleeker 1850) and Parastromateus niger (Bloch, 1795) in Kao Bay, North Maluku, Indonesia

Heavy metals have a relationship with fish organs. The aim of this study was to determine the distribution of heavy metals in various organs of Gerres abbreviatus and Parastromateus niger. The research was conducted in Kao Bay waters from April to September 2019. Samples obtained were prepared at the aquatic science laboratory of Khairun University and were analyzed at the Environmental Productivity Laboratory of IPB University Bogor using the AAS instrument to determine heavy metals concentrations. The result of the heavy metals accumulation in Gerres abbreviatus meat was Zn > Cu > Pb > Ni > Hg > Mn > Cd. Meanwhile, the heavy metals accumulation in Roi fish (Parastromateus niger) meat was Zn > Mn > Ni > Hg > Pb > Cd > Cu.