The Use of Results of Expanded Monitoring Research for the Integrated Assessment of Drinking Water According to Indices of Chemical Harmlessness

Vozhdaeva, M. Yu.; Kholova, A. R.; Vagner, E. V.; Kantor, E. A.; Kantor, L. I.; Trukhanova, N. V.; Melnitsky, I. A.

doi:10.18821/0016-9900-2018-97-2-117-124

Cited by 6 publications

(2 citation statements)

References 6 publications

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“…Nevertheless, organohalogenated compounds of a higher mass (aldehydes, ketones, acids, acetonitriles, phenols, etc.) may also be quite hazardous [10][11][12][13][14]. Over 700 DBPs are currently known [15], constituting only half of the total of organic chlorine.…”

Section: Introductionmentioning

confidence: 99%

“…The formation of organobromines and their higher impact than that of the corresponding organochlorines [7,14,[48][49][50] require conducting targeted monitoring with quantification of the known ones and non-targeted screening of all types of these compounds to identify novel ones. Quite often, quantification of the most toxic individual organobromines is accompanied by the estimation of the overall content of brominated compounds, similarly to other integrated parameters.…”

Section: Introductionmentioning

confidence: 99%

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Monitoring and Statistical Analysis of Formation of Organochlorine and Organobromine Compounds in Drinking Water of Different Water Intakes

Vozhdaeva

Kholova²,

Melnitskiy³

et al. 2021

Molecules

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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.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Monitoring and Statistical Analysis of Formation of Organochlorine and Organobromine Compounds in Drinking Water of Different Water Intakes

Vozhdaeva

Kholova²,

Melnitskiy³

et al. 2021

Molecules

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Assessment of total chlorine and bromine content in semivolatile organic substances in water

Vozhdaeva

Holova²,

Trukhanova³

et al. 2019

IOP Conf. Ser.: Earth Environ. Sci.

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The integral indicators for assessment of total concentration of chlorine and bromine in semi-volatile organic substances (SVOS) of water are presented. The method is based on liquid/liquid extraction of SVOS from a sample of water (natural, potable, industrial, purified sewage water etc.), concentrating the extract and without derivatization or conversion analyzed by the method of gas chromatography, coupled with atomic emission detecting (GC-AED). In this case the AED operates in two modes: the chlorine selective channel with detection at a wavelength of 479 nm and the bromine selective channel – at 478 nm. Under the given conditions of sample preparation and the chromatographic procedure the components are registered with Kovats retention index on non-polar phases from 900 to 3200. The range of the analytical procedure covers classes of SVOS, such as halogen-containing pesticides, aromatic and aliphatic hydrocarbons, fatty acids, ethers, polyaromatic hydrocarbons, phenols and their halogen derivatives. The total concentration of chlorine and bromine is calculated by component-independent calibration which is available by using an AED. The indexes are named Technogenic Organic Chlorine and Technogenic Organic Bromine, because analyzed compounds have technogenic or secondary technogenic origin. The sensitivity of determination is 1×10−6 mg/dm3 for the specified elements.

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Regional features of the quality of the centralized water supply

Богданова¹,

Кику²

2022

Sanitary Doctor

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The paper studies the results of social and hygienic monitoring of drinking water from centralized water supply systems carried out in the Primorsky Krai, in comparison with Russian indicators according to state reports. Attention is paid to the state of sanitary protection zones, a comparative characteristic of underground and surface sources of drinking water is given in terms of sanitary and epidemiological well-being. There is a decrease in the proportion of samples in the Primorsky Krai that are unsatisfactory in sanitary and epidemiological terms, due to the elimination of water sources that do not have sanitary protection zones along the region. In terms of sanitary and chemical indicators, the proportion of detected unsatisfactory samples taken from underground sources is higher than that of samples taken from surface sources. There is a lag in the provision of high-quality drinking water to the rural population compared to the urban population, and this gap is predicted to increase due to migration outflow to the urban environment and the postponement of the reconstruction of water supply systems. The leading role of surface sources in providing water supply to the largest number of the population of Primorsky Krai, the laboriousness of water treatment and transportation of water against the background of a reduction in the number of sources and centralization of water supply around more productive water sources are noted. The frequency of non-standard samples of drinking water in terms of microbiological indicators is included in the list of primary factors affecting the sanitary and epidemiological well-being of the region. In the Primorsky Krai, hydrogeochemical provinces were identified according to the increased content of manganese in the water and the physiological inferiority of drinking water. The importance of assessing the quality of drinking water, which has a significant impact on the formation of public health, is emphasized.

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The Use of Results of Expanded Monitoring Research for the Integrated Assessment of Drinking Water According to Indices of Chemical Harmlessness

Cited by 6 publications

References 6 publications

Monitoring and Statistical Analysis of Formation of Organochlorine and Organobromine Compounds in Drinking Water of Different Water Intakes

Monitoring and Statistical Analysis of Formation of Organochlorine and Organobromine Compounds in Drinking Water of Different Water Intakes

Assessment of total chlorine and bromine content in semivolatile organic substances in water

Regional features of the quality of the centralized water supply

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