Research output: Contribution to journal › Article › peer-review
Monitoring and statistical analysis of formation of organochlorine and organobromine compounds in drinking water of different water intakes. / Vozhdaeva, Margarita Yu; Kholova, Alfiya R.; Melnitskiy, Igor A.; Beloliptsev, Ilya I.; Vozhdaeva, Yulia S.; Kantor, Evgeniy A.; Lebedev, Albert T.
In: Molecules, Vol. 26, No. 7, 1852, 04.2021.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Monitoring and statistical analysis of formation of organochlorine and organobromine compounds in drinking water of different water intakes
AU - Vozhdaeva, Margarita Yu
AU - Kholova, Alfiya R.
AU - Melnitskiy, Igor A.
AU - Beloliptsev, Ilya I.
AU - Vozhdaeva, Yulia S.
AU - Kantor, Evgeniy A.
AU - Lebedev, Albert T.
N1 - Publisher Copyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland.
PY - 2021/4
Y1 - 2021/4
N2 - The main drawback of drinking water chlorination involves the formation of quite hazardous disinfection by-products (DBPs), represented mainly by halogenated species. Based on the authors’ monitoring data since 2002, the prevalence of chlorine over bromine in the composition of volatile DBPs was shown for the drinking water in Ufa (Russia). However, the situation was completely reversed in the case of semi-volatile DBPs. The principal goal of the present study involved rationalization of the results of the long-term monitoring. Gas chromatography–mass spectrometry (GC-MS) was used for the qualitative and quantitative analysis of volatile DBPs. Identification of semi-volatile compounds was carried out with GC-MS, while gas chromatography with an atomic emission detector (GC-AED) was used for their quantification. A significant contribution of oxygen to the composition of semi-volatile compounds proves the decisive role of the dissolved organic matter oxidative destructive processes. Statistical analysis revealed notable linear correlations for trihalomethane and haloacetic acid formation vs. chlorine dose. On the contrary, halogenated semi-volatile products do not demonstrate any correlations with the water quality parameters or chlorine dose. Principal component analysis (PCA) placed them into separate groups. The results allow for proposing that formation of the organohalogenated species involved the fast penetration of bromine into the humic matter molecules and, further, their oxidative destruction by active chlorine.
AB - The main drawback of drinking water chlorination involves the formation of quite hazardous disinfection by-products (DBPs), represented mainly by halogenated species. Based on the authors’ monitoring data since 2002, the prevalence of chlorine over bromine in the composition of volatile DBPs was shown for the drinking water in Ufa (Russia). However, the situation was completely reversed in the case of semi-volatile DBPs. The principal goal of the present study involved rationalization of the results of the long-term monitoring. Gas chromatography–mass spectrometry (GC-MS) was used for the qualitative and quantitative analysis of volatile DBPs. Identification of semi-volatile compounds was carried out with GC-MS, while gas chromatography with an atomic emission detector (GC-AED) was used for their quantification. A significant contribution of oxygen to the composition of semi-volatile compounds proves the decisive role of the dissolved organic matter oxidative destructive processes. Statistical analysis revealed notable linear correlations for trihalomethane and haloacetic acid formation vs. chlorine dose. On the contrary, halogenated semi-volatile products do not demonstrate any correlations with the water quality parameters or chlorine dose. Principal component analysis (PCA) placed them into separate groups. The results allow for proposing that formation of the organohalogenated species involved the fast penetration of bromine into the humic matter molecules and, further, their oxidative destruction by active chlorine.
KW - brominated DBP; chlorinated DBP; THM; HAA; SVOC; GC-MS; aqueous chlorination
KW - brominated DBP
KW - chlorinated DBP
KW - THM
KW - HAA
KW - SVOC
KW - GC-MS
KW - aqueous chlorination
UR - http://www.scopus.com/inward/record.url?scp=85103919728&partnerID=8YFLogxK
U2 - 10.3390/molecules26071852
DO - 10.3390/molecules26071852
M3 - Article
C2 - 33805994
AN - SCOPUS:85103919728
VL - 26
JO - Molecules
JF - Molecules
SN - 1420-3049
IS - 7
M1 - 1852
ER -
ID: 84967705