Studying the concentration of xenobiotics in milk and developing the biosensor method for their rapid determination DOI Creative Commons
Yerlan Zharykbasov, Zhainagul Kakimova, Айтбек Какимов

et al.

Heliyon, Journal Year: 2023, Volume and Issue: 9(8), P. e19026 - e19026

Published: Aug. 1, 2023

In this article the content of toxic xenobiotics (heavy metals and pesticides) in cow milk collected from 5 districts Eastern Kazakhstan was examined their cumulative properties were determined. The organochlorine pesticides (HCCH, DDT) not detected analyzed milk. mercury arsenic samples does exceed maximum allowable concentration (0.005 0.05 mg/kg, respectively). cadmium above (0.03 mg/kg) found sampled Shemonaikha Katon-Karagai districts. lead zinc (0.1 5.0 respectively) taken all studied copper (1.0 4 under study (Borodulikha, Beskaragai, Katon-Karagai). Based on analysis information data need to develop an accelerated method determining substantiated. basic directions modernization biosensor for determination salts dairy products selected. A new approach process immobilization enzyme surface a substrate has been developed. efficiency using polymeric plate with graphite conducting layer as basis established.

Language: Английский

A state-of-the-art and future perspectives of transboundary rivers in the cold climate – a systematic review of Irtysh River DOI Creative Commons
Ivan Radelyuk, Linus Zhang, Daulet Assanov

et al.

Journal of Hydrology Regional Studies, Journal Year: 2022, Volume and Issue: 42, P. 101173 - 101173

Published: July 12, 2022

Irtysh River Basin, a transboundary river laying in the North hemisphere and serving as home for around 15 million people China, Kazakhstan, Russia. Considering existing pressures of climate change anthropogenic activities on water resources, this research aims to evaluate recent (2010–2022) trends about state-of-the-art matter relationships between hydrological budget, quality, biodiversity, policy issues. A literature review was carried out English, Chinese, Russian languages defining key issues management. Melting permafrost, glaciers, snow upstream mountains should be considered one processes budget. However, high impact evapotranspiration rate could offset effect increased melting along basin. Efficient operating large dams reservoirs planning future installations deserves special attention assurance respective level restoration ecological diversity Implementation water-saving techniques tributaries also play significant role keeping resilience river. Handling historical contamination will guarantee health. The basin management still lacks tripartite agreement, however principles hydrosolidarity no-harm are followed by involved countries.

Language: Английский

Citations

24
Environmental risk assessment for sustainable industrial urban development: The case of northern industrial zone of Pavlodar, Kazakhstan DOI Creative Commons
Zhanat Shomanova,

Yuriy Nossenko,

Meruert Yerkibayeva

et al.

PLoS ONE, Journal Year: 2025, Volume and Issue: 20(4), P. e0320835 - e0320835

Published: April 16, 2025

This study assesses heavy metal (HM) contamination in soils of an urban industrial zone using statistical and spatial analysis methods. Concentrations 12 key HMs, including Zn, Pb, Cu, Ni, were measured X-ray fluorescence (XRF), with values exceeding background levels several times certain areas. Pollution indices such as the Load Index (PLI) Total Indicator (Zc) revealed moderate to high levels, PLI ranging from 1.05 3.38 Zc between 0.67 51.34. Health risk assessments indicated that hazard quotients (HQ) exceeded safe thresholds hotspots, highlighting potential risks. Spatial distribution maps identified activities primary source contamination. Specifically, according PLI, approximately 93.757% studied area is classified moderately contaminated, while 0.702% considered significantly contaminated. These findings provide a baseline for monitoring mitigating soil pollution regions offering insights sustainable land management.

Language: Английский

Citations

0
Online neutralization promotes water dissociation equilibrium forward in bipolar membranes to achieve 9.2 mol/L NaOH production DOI
Shuang Wu,

Rong Fu,

Junying Yan

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 490, P. 151610 - 151610

Published: April 23, 2024

Language: Английский

Citations

3
Assessment of the radionuclide and chemical composition of the Irtysh River water at the Republic of Kazakhstan territory DOI Creative Commons
А. К. Айдарханова, Н. В. Ларионова, A. Zh. Tashekova

et al.

RSC Advances, Journal Year: 2024, Volume and Issue: 14(36), P. 26208 - 26218

Published: Jan. 1, 2024

The transboundary Irtysh River flows through the territory of three states: China, Kazakhstan and Russia. Industrial enterprises are located in basin at Kazakhstan. Also, Semipalatinsk nuclear test site can affect state water. For this reason, researches were carried out to determine content natural anthropogenic radionuclides, macro-, microcomponents heavy metals According results, no anomalous deviations concentration radionuclides have been established. Except radionuclide

Language: Английский

Citations

3
Digital Visualization of Environmental Risk Indicators in the Territory of the Urban Industrial Zone DOI Open Access
Ruslan Sаfarov, Zhanat Shomanova,

Yuriy Nossenko

et al.

Sustainability, Journal Year: 2024, Volume and Issue: 16(12), P. 5190 - 5190

Published: June 18, 2024

This study focused on predicting the spatial distribution of environmental risk indicators using mathematical modeling methods including machine learning. The northern industrial zone Pavlodar City in Kazakhstan was used as a model territory for case. Nine models based kNN, gradient boosting, artificial neural networks, Kriging, and multilevel b-spline interpolation were employed to analyze pollution data assess their effectiveness levels. Each tackled problem regression task, aiming estimate load index (PLI) values specific locations. It revealed that maximum PLI mainly located southwest TPPs over some distance from territories according average wind rose City. Another area high part studied region, near Hg-accumulating ponds. level is generally attributed concentration Hg. method can be analysis; however, comparison with scientific literature Kriging MLBS without extra calculations produce non-linear, empirically consistent, smooth maps.

Language: Английский

Citations

2
Optimization of Solidification and Stabilization Efficiency of Heavy Metal Contaminated Sediment Based on Response Surface Methodology DOI Open Access
Yang Yang,

Moting Li,

Yan Sun

et al.

Sustainability, Journal Year: 2022, Volume and Issue: 14(6), P. 3306 - 3306

Published: March 11, 2022

Solidification and stabilization (S/S) by agents stabilizers is an effective way to treat heavy metal-contaminated sediments. Optimization of curing condition crucial minimize the consumption reagents on base S/S. In this work, synergistic effects cement stabilizer mechanical strength leaching toxicity contaminated sediments were investigated, S/S conditions optimized using response surface methodology. On basis a single-factor test, multi-factor experiments conducted fit relationship between effect amount stabilizer. The mechanism was investigated results from revised BCR method. indicate that optimal 44.29% content with 2.05% trimercapto-s-triazine trisodium salt (TMT). After 28 days curing, compressive reached 2.07 MPa concentrations Cd, Cu, Pb 0.094 mg/L, 0.031 0.173 respectively, which met requirement in-situ resource recycling standard. stability metals significantly improved as result removal acid extractable fraction (15.58~69.92%) increase in residual (18.27~49.07%).

Language: Английский

Citations

7
Potential Human Exposure to Mercury (Hg) in a Chlor-Alkali Plant Impacted Zone: Risk Characterization Using Updated Site Assessment Data DOI Open Access

Symbat Kismelyeva,

Rustem Khalikhan,

Aisulu Torezhan

et al.

Sustainability, Journal Year: 2021, Volume and Issue: 13(24), P. 13816 - 13816

Published: Dec. 14, 2021

Industrial activities have resulted in severe environmental contamination that may expose rural and urban populations to unacceptable health risks. For example, chlor-alkali plants (CAPs) historically contributed mercury (Hg) different compartments. One such site (a burden from the Soviet Union) is located an industrial complex Pavlodar, Kazakhstan. Earlier studies showed CAP operating second half of twentieth century caused elevated Hg levels soil, water, air, biota. However, follow-up with thorough risk characterization are missing. The present study aims provide a detailed based on data recent assessment around former CAP. ⅀HI (hazard index) ranged 9.30 × 10−4 0.125 (deterministic method) 5.19 2.54 10−2 (probabilistic method). results indicate acceptable excess human risks exposure region, i.e., other sources not considered. Air inhalation soil ingestion pathways highest values (up 99.9% 92.0%, respectively). residential scenario (among four) presented greatest risks, ranging 1.23 0.125. Although local population exposed coming Hg-contaminated media, directly could be performed due access prohibition. Furthermore, ingesting contaminated fish were covered as methyl-Hg was targeted. An additional needed for scenarios workers consuming Lake Balkyldak. Studies fate transport ecosystem also recommended considering methylation subsequent bioaccumulation food chain.

Language: Английский

Citations

6
Vliv výstavby jezu v lokalitě Abovce (Slovensko) na hladinu podzemních vod – případová studie z povodí Slané DOI Creative Commons
Radoslav Kandrík, Jaroslav Vido,

Róbert Chriašteľ

et al.

Vodohospodářské technicko-ekonomické informace, Journal Year: 2023, Volume and Issue: 65(1), P. 24 - 24

Published: Feb. 16, 2023

Výstavba jezů na řekách ovlivňuje dynamiku hladiny podzemních vod. Jez vybudovaný řece Slaná v roce 2010 mezi obcemi Abovce a Chanava přinesl možnost studovat tento vliv díky již existujícím monitorovacím vrtům vod Slovenského hydrometeorologického ústavu. Pro ověření vlivu vybudovaného jezu této oblasti byly použity záznamy týdenních dat za období 1986–2018. Dále bylo provedeno prostorové vymezení ovlivněných území pomocí geografických informačních systémů techniky interpolace. Výsledky ukázaly, že bezprostředně po vybudování hladina výrazně stoupla.

Citations

1
Studying the concentration of xenobiotics in milk and developing the biosensor method for their rapid determination DOI Creative Commons
Yerlan Zharykbasov, Zhainagul Kakimova, Айтбек Какимов

et al.

Heliyon, Journal Year: 2023, Volume and Issue: 9(8), P. e19026 - e19026

Published: Aug. 1, 2023

In this article the content of toxic xenobiotics (heavy metals and pesticides) in cow milk collected from 5 districts Eastern Kazakhstan was examined their cumulative properties were determined. The organochlorine pesticides (HCCH, DDT) not detected analyzed milk. mercury arsenic samples does exceed maximum allowable concentration (0.005 0.05 mg/kg, respectively). cadmium above (0.03 mg/kg) found sampled Shemonaikha Katon-Karagai districts. lead zinc (0.1 5.0 respectively) taken all studied copper (1.0 4 under study (Borodulikha, Beskaragai, Katon-Karagai). Based on analysis information data need to develop an accelerated method determining substantiated. basic directions modernization biosensor for determination salts dairy products selected. A new approach process immobilization enzyme surface a substrate has been developed. efficiency using polymeric plate with graphite conducting layer as basis established.

Language: Английский

Citations

1