Recep Tayyip Erdoğan Üniversitesi Fen ve Mühendislik Bilimleri Dergisi

Yazarlar: Serdar KUŞTUL, Ali BİLGİN, Şule GÜZEL

Konular:Temel Bilimler

Anahtar Kelimeler:Drinking water,Chemical fertilizers,Nitrite,Nitrate,Water quality,Rize

Özet: In this study, water samples were taken from the drinking water of 12 villages, selected as samples from the villages in Rize province, before (April 2017), and after (August and November 2017) the fertilization period of tea farming in the area. Analysis of the nitrite and nitrate was performed on all samples, and it was seen that the nitrite and nitrate (ppm) values of the drinking waters were statistically significant (P<0.01) in relation to the pre and post-fertilization periods. The highest nitrate and nitrite values occurred in August and April, and the lowest nitrate and nitrite values were in April and August, respectively. Furthermore, there were statistically significant differences in the nitrate (P<0.01) and nitrite values (P<0.05) between all of the different villages. According to the mean results obtained, it was observed that the nitrate levels of water taken from the villages of the Çamlıhemşin (Dikkaya with 49.67 mg/L) and Kalkandere (Geçitli with 41.21 mg/L) districts are very close to the nitrate limits (50 mg/L) set by the World Health Organization, the European Community and the Environmental Protection Agency. When the nitrate values were evaluated separately in terms of periods, it was determined that the nitrate values of water taken from villages belonging to the Çamlıhemşin (59.1 mg/L) and Kalkandere (60.4 mg/L) districts in August were actually above the nitrate limits mentioned above (50 mg/L). According to the Water Pollution Control Regulation, it was determined that water samples in the villages had 3rd, and 2nd, 3rd and 4th classes of water quality in terms of nitrite and nitrate, respectively. When all of the above data is considered, the need to take measures to reduce nitrate levels in drinking water is apparent.

---