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Articles by Sema Agaoglu
Total Records ( 2 ) for Sema Agaoglu
  Suleyman Alemda , Tahir Kahraman , Sema Agaoglu and Mustafa Alisarli
  In this study, nitrate and nitrite levels of drinking water in city of Bitlis were investigated. A total of 164 water samples, collected from the tank and tap water in Spring and Autumn were used as material. Analysis performed through spectrometric techniques showed that all samples contained some levels of nitrate and nitrite. The average nitrate and nitrite levels were 5.68±0.31 and 1.32±0.09 mg L-1, respectively. The effects of residential areas and season on the nitrate and nitrite levels were found to be statistically significant (p<0.05). Nitrate levels of tank and tap water were in accordance with recommended standards. However, 12 and 100% of tank water samples and 7.02 and 100% of tap water samples collected respectively in Spring and Autumn did not meet the national standards for nitrite levels. In addition, 3.58% of tap water collected in Autumn did not meet the international standards.
  Nurhayat Atasoy , Suleyman Alemdar , Ufuk Mercan and Sema Agaoglu
  This study was performed to determine nitrate and nitrite levels of packaged natural spring and mineral water consumed in Van city of Turkey. A total of 200 water samples, belonging to 10 different companies, each of 100 pet spring water and 100 bottled mineral water samples were used as material. Nitrate and nitrite levels were measured by the spectrophotometric method. According to the results both nitrate and nitrite were found to be present in all water samples. Mean nitrate and nitrite concentrations were 3.66±0.028 and 0.045±0.003 mg L-1 in the spring water and 3.52±0.011 and 0.025±0.001 mg L-1 in the mineral water, respectively. Finally; nitrate and nitrite levels in water samples were in accordance with the related national and international regulations and considered safe for consuming.
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