The cyclicity in the changes in the chemical composition of the water source of the Angara River (Baikal Stock) in 2017–2018 in comparison with the last 20 years of data

Grebenshchikova, V.I.; Kuzmin, M. I.; Doroshkov, A. A.; Proydakova, O. A.; Tsydypova, Sayana B.

doi:10.1007/s10661-019-7888-z

Cited by 5 publications

(3 citation statements)

References 13 publications

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“…According to our determinations, the average TDS value in the Irkutsk Reservoir (92.5 mg L −1 ) was less than the world river water median (127 mg L −1 ) [32]. This value was close to the average TDS level in Lake Baikal (~96 mg L −1 ) [28] and the source of the Angara River (95.6 mg L −1 ) [29] (Table 1). The main natural sources of dissolved salts, which change the composition of water over a wide range, include cyclic salts and weathering of minerals [33][34][35].…”

Section: Major Ion Compositionsupporting

confidence: 62%

Hydrochemical Characteristics and Water Quality Assessment of Irkutsk Reservoir (Baikal Region, Russia)

Pastukhov,

Poletaeva,

Hommatlyyev

2023

Water

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The Irkutsk Reservoir, belonging to the largest unified freshwater Baikal–Angara system, is an important source of drinking water in the region. Therefore, studies of its hydrochemical characteristics are of prime importance in deciding on the role of anthropogenic activity in water quality. The water samples were collected across the reservoir in 2007, 2012, and 2021 and then were analyzed for major ions and trace elements. The data revealed that the distribution of HCO3−, SO42−, Cl−, Ca2+, Mg2+, Na+ and K+ is stable across the reservoir. Trace element concentrations varied from 1.13 to 15.39 µg L−1 for Al, from <DL to 0.39 µg L−1 for Cr, from 0.39 to 23.12 µg L−1 for Mn, from 1.25 to 53.22 µg L−1 for Fe, from 0.005 to 0.100 µg L−1 for Co, from 0.20 to 1.98 µg L−1 for Cu, from <DL to 13.40 µg L−1 for Zn, from 0.25 to 0.48 µg L−1 for As, from 0.004 to 0.127 µg L−1 for Cd, from <DL to 0.195 µg L−1 for Sn, from <DL to 0.0277 µg L−1 for Cs, from <DL to 1.13 µg L−1 for Pb, from <DL to 0.0202 µg L−1 for Th, and from 0.27 to 0.75 µg L−1 for U. The concentrations of all major ions and trace elements in water were below the drinking water standards. CF values showed considerable and high contamination of samples with Al, Mn, Fe, Co, Cu, Cd, Sn, Pb, and Th. PLI values classified the majority of water samples as water with baseline levels of pollutants, and part of the samples was classified as either polluted or highly polluted.

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Section: Major Ion Compositionsupporting

confidence: 62%

Hydrochemical Characteristics and Water Quality Assessment of Irkutsk Reservoir (Baikal Region, Russia)

Pastukhov,

Poletaeva,

Hommatlyyev

2023

Water

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“…As it receives the runoff of Lake Baikal, the Angara River inherits its hydrochemical characteristics. Long-term monitoring indicates similar mineralization values in the Angara River source (95.6 mg L −1 ) [10] and Lake Baikal (~96 mg L −1 ) [11]. In the river, as in the lake, water belongs to the bicarbonate class of the calcium group.…”

Section: Introductionmentioning

confidence: 85%

Trace Element Compositions and Water Quality Assessment in the Angara River Source (Baikal Region, Russia)

Poletaeva

Pastukhov

Dolgikh

2022

Water

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The relevance of studying the spatial-temporal dynamics in the trace element composition of the water at the Angara River source is associated not only with determining the degree of anthropogenic load on the local area of the water body but also with the use of the water chemical composition of the Angara River source as an integral indicator of the hydrochemical state of the entire Lake Baikal. The current work is based on monthly monitoring studies conducted from March 2021 to February 2022 along the left shore, middle part, and right shore of the Angara River source. In water samples, the concentrations of Al, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Cd, Sn, Cs, Tl, Pb, Th, and U were measured by inductively coupled plasma mass spectrometry. The results indicated that the concentrations of the trace elements lie within mean + 1SD: Cd in 97% of samples; U in 94% of samples; Tl in 92%; Al, Cr, Co, Ni, Cu, Zn, Sn, Pb, and Cs in over 80%; Fe in 78% of samples; and Mn and Th in over 60% of samples. Such results show a high degree of consistency in the water trace element composition at the source of the Angara River. The major factors responsible for the water hydrochemistry at the Angara River source include the runoff of Lake Baikal, the anthropogenic effect of Listvyanka and Port Baikal settlements, and water transport activity. The concentrations of all trace elements in the water of the Angara River source are substantially below the standards for drinking water. At the same time, the single-factor pollution index revealed water samples with considerable contamination by Fe, Zn, Sn, Al, Cs, Mn, Cu, Tl, Cd, Pb, and Th and very high contamination by Cr, Fe, Co, Cs, Tl, Pb, and Th. The pollution load index has classified most of the water samples as having baseline levels of pollutants. Three samples taken from the left shore, four from the middle part, and seven from the right shore were classified as polluted. This means that the ongoing anthropogenic impact may worsen the water quality and have a negative impact on living organisms. The obtained results make a clear case for strengthening environmental protection measures to minimize the anthropogenic effect on the ecosystems of Lake Baikal and Angara River.

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“…Воды Байкала классифицируются как слабоминерализованные мягкие воды гидрокарбонатные кальциевые. Приблизительный средний состав главных ионов (мг/л): НСО 3 --66,5, SO 4 2--5,2, Сl --0,6, Са 2+ -15,2, Mg 2+ -3,1, Na + -3,8, К + -2, сумма ионов -96,4 [3][4][5][6][7][8][9][10][11][12][13].…”

Section: Introductionunclassified

Isotopic and Chemical Composition of the Deep Water of Lake Baikal

Oganesyants

Sevostianova

Кузьмина

et al. 2022

Food Processing: Techniques and Technology

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Introduction. Due to its natural composition, the deep water of Lake Baikal can be bottled without any conserving agents. The development of large-scale production of bottled Baikal water requires its detailed study in order to protect it from counterfeit and falsification. The purpose of this work was to study the isotopic and chemical composition of the deep water of Lake Baikal and offer indicators for its identification. Study objects and methods. The research included deep water of Lake Baikal, sampled at various points, the water from the Angara River, and the tap water from the cities of Irkutsk and Shelekhov. The tests were performed using a quadrupole ICP-MS mass spectrometer and a Delta V Plus isotope mass spectrometer with a GasBench II module. Results and discussion. All the water samples revealed fresh water with insignificant mineralization. As for salts, the deep water samples had a lower content of sodium and chlorides, as well as a higher content of silicon. As for metals, the deep water samples contained iron, manganese, copper, and zinc; in the tap water samples, these indicators were significantly higher. Unlike that of the Angara water samples, the isotopic profile of the deep water samples was somewhat “lighter”, both in the ratio of oxygen isotopes δ18O – by 0.73‰, and hydrogen δD – by 0.49‰. The tap water samples had a higher deuterium content. The content of oxygen isotopes (δ18O) in the tap water samples was close to that in the Angara samples. Conclusion. The complex physicochemical and isotope analyses expanded the list of identification indicators and made it possible to identify the deep water of Lake Baikal.

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The cyclicity in the changes in the chemical composition of the water source of the Angara River (Baikal Stock) in 2017–2018 in comparison with the last 20 years of data

Cited by 5 publications

References 13 publications

Hydrochemical Characteristics and Water Quality Assessment of Irkutsk Reservoir (Baikal Region, Russia)

Hydrochemical Characteristics and Water Quality Assessment of Irkutsk Reservoir (Baikal Region, Russia)

Trace Element Compositions and Water Quality Assessment in the Angara River Source (Baikal Region, Russia)

Isotopic and Chemical Composition of the Deep Water of Lake Baikal

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