Gaz kromatografi-kütle spektrometresi ile gazdan arındırma ve tutma yöntemiyle Kocaeli bölgesi içme sularında trihalometan analizi

Amaç: Bu çalışmada Kocaeli bölgesinde içme suyu arıtım proseslerinde kullanılan klor ve bileşiklerinin dezenfeksiyon işlemi sonrasında içme sularında oluşan trihalomethan (kloroform, tribromometan bromodikloromethan, dibromokloromethan) gibi uçucu organik bileşiklerin insan sağlığını ve içme suyu kalitesinin yapısını bozabilecek yan ürünlerin tespit edilmesi amaçlanmıştır.Yöntem: Kocaeli bölgesinde yapılan çalışmalarda iki farklı noktadan (A-B) olmak üzere farklı günlerde alınan toplam 10 adet numune üzerinde analizler yapıldı. Analitiksel değerlendirmeler kantitatif olarak gaz kromatografi-kütle spektrometresi ile gazdan arındırma ve tutma cihazı ile gerçekleştirildi. Yapılan verifikasyon çalışmalarında on tekrarlı çalışmalar neticesinde ölçülebilir en düşük dedeksiyon limiti 0,010 µg/l ve ölçülebilir en düşük miktar limiti 0,051 µg/l olarak hesaplandı.Bulgular: Her iki noktadan yapılan çalışmalarda A noktasından alınan 5 adet içme suyu numunelerinin toplam trihalometan miktarının; 32,81 µg/l (ppb), B noktasından alınan 5 adet içme suyu numunelerinin toplam trihalometan miktarının; 32,93 µg/l (ppb) olduğu gözlemlenmiştir. Yapılan çalışmalarda her iki noktadan alınan numunelerde coğrafi konumları farklı olmasına rağmen miktarsal olarak büyük farklılıklar olmadığı tespit edilmiştir.Sonuç: Bu çalışma, ile yapılan analizler sonucunda uluslararası standartlarda yer alan Çevre Koruma Ajansı tarafından içme sularında klorlama sonucu oluşan toplam trihalometan miktarının yönetmeliklerde belirtilmiş olan 100 µg/l (ppb) limit değerinin altında kaldığı gözlemlendi. Dünya’da birçok ülkede kullanılan klorlama prosesinin oluşturduğu zararlı yan ürün miktarını en aza indirgemek ve içme suyu kalitesini arttırmak için, ileri oksidasyon proses türlerinden olan Ultrases, Hidrojen Peroksit (H2O2), Fenton vb. proseslerden faydalanılabilinir.

Anahtar Kelimeler:

GC-MS P&T, THM

Analysis of trihalomethanes in potable waters of Kocaeli region by gas chromatography-mass spectrometry purge and trap

Aim: In this study, it was aimed to determine the by-products of volatile organic compounds such as trihalomethan (chloroform, tribromomethane bromodichloromethan, dibromochloromethan), which are formed in drinking water after disinfection of chlorine and its compounds used in drinking water treatment processes.Method: In the studies carried out in the Kocaeli region, analyzes were performed on a total of 10 samples from two different points (A-B) on different days. Analytical evaluations were performed quantitatively with the gas chromatography-mass spectrometry purge and trap device. In the verification studies, the lowest measurable detection limit was calculated as 0.010 µg/l and the lowest measurable limit was 0.051 µg/l as a result of ten repetitive studies.Results: In the studies conducted from both points, the total trihalomethane amount of 5 drinking water samples taken from Point A; 32.81 µg/l (ppb), total trihalomethane amount of 5 drinking water samples taken from point B; it has been observed to be 32.93 µg/l (ppb). In the studies conducted, it was determined that there is no large amount of differences in the samples taken from both points, although their geographical locations were different.Conclusion: As a result of this analysis, it was observed that the total amount of trihalomethane formed as a result of chlorination in drinking water by the Environmental Protection Agency, which is included in international standards, remaining below the limit value of 100 µg/l (ppb) specified in the regulations. Advance oxidation processes can be used to improve drinking water quality.

Keywords:

GC-MS P&T, THM,

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