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. Arsenic exists in various forms in nature and living organisms.Toxic elements, including arsenic, which are present in some plants,can severely damage haemopoietic, immune, nervous and reproductivesystems. For this reason, a content of heavy metals is one of the criteria forthe assessment of the safe use of plant material in the production of traditionalmedicines and herbal infusions. This instigates the need for constantand organized safety control of plants that are used as raw materialsin pharmaceutical industry.The aim of this study is to determine the arsenic content in selected teaswhich are available on the market of the Republic of Srpska.Methods. The 10 g samples of 13 herbal and 3 fruit teas were mineralizedby dry ashing and arsenic contents were determined by the atomicabsorption spectrophotometer Agilent Technologies Series 200 with anair-acetylene burner and D2 background correction.Results. Mean arsenic concentrations in the herbal tea samples rangedfrom 0.009 to 0.145 mg/kg. The lowest arsenic concentration in a singlesample of 0.007 mg/kg was found in Chamomile tea and Uva ursi collectedas a wild plant at elevation above 1200 m. The highest arsenic concentrationwas found in the sample of Sambucus nigra tea (0.145 mg/kg). Infruit teas, the arsenic concentration ranged from 0.014 mg/kg (Cranberry)to 0.027 mg/kg (Fruit mix).Conclusion. Arsenic content in all analyzed tea samples is below the valuestipulated by the national legislation.

Determination of arsenic content in tea samples available on Republic of Srpska market by atomic absorption spectrophotometry