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The Influence of Environmental Exposure to Heavy Metals on the Occurrence of Selected Elements in the Maxillary Bone. Int J Mol Sci 2023; 24:ijms24032552. [PMID: 36768877 PMCID: PMC9916996 DOI: 10.3390/ijms24032552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 01/18/2023] [Accepted: 01/20/2023] [Indexed: 01/31/2023] Open
Abstract
The elemental composition of the body's calcified tissues may reflect the environmental exposure of the population to heavy metals. The aim of the study was to assess whether the elemental composition of the maxillary bone from individuals belonging to a given population reflects the environmental exposure of this population to lead and cadmium. The research material consisted of cortical bone from the anterolateral walls of the maxilla collected from 126 patients during Caldwell-Luc maxillary sinus surgery on residents of two cities differing in terms of the lead and cadmium pollution of the natural environment. The content levels of lead, cadmium, iron, manganese, chromium, copper, and iron were determined by using atomic absorption spectrophotometry. The content levels of lead and cadmium in the samples of the maxillary bones of residents of Bielsko-Biala were 3.26 ± 2.42 µg/g and 0.74 ± 0.38 µg/g, respectively, whereas in the samples from the residents of Katowice, they were 7.66 ± 2.79 µg/g and 1.12 ± 0.08 µg/g, respectively. It was found that the lead and cadmium levels in the maxillary bone corresponded to the environmental exposure to these heavy metals in the place of residence, which was proven here via the example of the residents of two cities with different concentrations of these heavy metals in the air over long time periods. Additionally, higher content levels of essential metals such as manganese, chromium, copper, and iron are characteristic of the maxillary bone samples of residents of the area that is more polluted with heavy metals.
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Xiang Y, Xiang Y, Gao X. Humic acid coupled with coal gasification slag for enhancing the remediation of Cd-contaminated soil under alternated light/dark cycle. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:1276-1287. [PMID: 35915303 DOI: 10.1007/s11356-022-22308-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 07/26/2022] [Indexed: 06/15/2023]
Abstract
In this study, the synthesis of a coal gasification slag-humic acid (SA) hybrid was purposed for the remediation of cadmium (Cd)-contaminated soil. In order to investigate the effect of SA on the Cd-contaminated soil and plant growth, a series of experiments were carried out under different illumination condition. The results showed that the SA has some the photocatalytic activity, and adding 10 wt% of SA to the soil could obviously improve the soil fertility and decrease the mobility of Cd in the soil under alternated light/dark cycle (12L/12D); the content of the residual fraction in the SA-amended soil reached 69.5%, and the Cd decreasing rates for the leaf, stem, and root of Artemisia ordosica were near 100%, 91.3%, and 75.3%, respectively. Characterizations of amendments suggested that the synergistic effect of precipitation and surface complexation played a major role in the remediation of Cd-contaminated soil.
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Affiliation(s)
- Yulin Xiang
- College of Chemistry and Chemical Engineering, Yulin University, Yulin, 719000, Shaanxi Province, China.
| | - Yuxiu Xiang
- Department of Management Engineering, Qiqihar Institute of Engineering, Heilongjiang, Qiqihar, China
| | - Xuchun Gao
- College of Chemistry and Chemical Engineering, Yulin University, Yulin, 719000, Shaanxi Province, China
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Wen S, Lu Y, Luo C, An S, Dai J, Liu Z, Zhong J, Du Y. Adsorption of humic acids to lake sediments: Compositional fractionation, inhibitory effect of phosphate, and implications for lake eutrophication. JOURNAL OF HAZARDOUS MATERIALS 2022; 433:128791. [PMID: 35366452 DOI: 10.1016/j.jhazmat.2022.128791] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 02/26/2022] [Accepted: 03/23/2022] [Indexed: 06/14/2023]
Abstract
Humic acid (HA) and phosphate interactions play a vital role in the biogeochemical cycle of carbon and nutrients and thus the trophic state of a lake. The adsorption behavior of HAs to sediments in the absence and presence of phosphate was investigated in this study. Three types of HAs were used, AHA from algae-dominated lake sediments, MHA from macrophyte-dominated lake sediments, and a reference HA (RHA) with terrestrial sources. The adsorption capacity of lake sediments was highest for AHA, which can be explained by that AHA contained more carboxyl-containing molecules, proteinaceous compounds and polysaccharides that were preferentially adsorbed by minerals. Phosphate showed a stronger inhibitory effect on MHA adsorption than on AHA adsorption, suggesting that AHA can more effectively replace phosphate adsorbed to sediments. Our findings show that the functional groups of organic compounds control not only their fractionation and burial but also their ability to replace phosphate in sediments. We propose a novel mechanism to explain the legacy effect of lake eutrophication. That is, as lakes shift from a macrophyte-dominated state to more eutrophic, algae-dominated state, increasing algae-derived organic compounds can promote the release of phosphate from sediments, forming a positive feedback loop that sustains internal phosphorus loading and hence lake eutrophication.
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Affiliation(s)
- ShuaiLong Wen
- Nanjing Institute of Geography and Limnology, State Key Laboratory of Lake Science and Environment, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - YueHan Lu
- Molecular Eco-Geochemistry (MEG) Laboratory, Department of Geological Sciences, The University of Alabama, 201-7th Ave, Tuscaloosa, AL 35485, USA
| | - ChunYan Luo
- Nanjing Institute of Geography and Limnology, State Key Laboratory of Lake Science and Environment, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - ShiLin An
- Nanjing Institute of Geography and Limnology, State Key Laboratory of Lake Science and Environment, Chinese Academy of Sciences, Nanjing 210008, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - JiaRu Dai
- Nanjing Institute of Geography and Limnology, State Key Laboratory of Lake Science and Environment, Chinese Academy of Sciences, Nanjing 210008, China; School of Environmental Science and Engineering, Nanjing Tech University, Nanjing 210008, China
| | - ZhengWen Liu
- Nanjing Institute of Geography and Limnology, State Key Laboratory of Lake Science and Environment, Chinese Academy of Sciences, Nanjing 210008, China
| | - JiCheng Zhong
- Nanjing Institute of Geography and Limnology, State Key Laboratory of Lake Science and Environment, Chinese Academy of Sciences, Nanjing 210008, China
| | - YingXun Du
- Nanjing Institute of Geography and Limnology, State Key Laboratory of Lake Science and Environment, Chinese Academy of Sciences, Nanjing 210008, China.
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Banach-Szott M, Debska B, Tobiasova E. Properties of humic acids depending on the land use in different parts of Slovakia. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:58068-58080. [PMID: 34100209 PMCID: PMC8536593 DOI: 10.1007/s11356-021-14616-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 05/25/2021] [Indexed: 06/12/2023]
Abstract
Many studies report organic carbon stabilization by clay minerals, but the effects of land use and soil type on the properties of humic acids (HAs) are missing. The aim of the paper is to determine the effects of land use and soil types on the characteristics of HAs, which have a considerable influence on organic matter quality. It was hypothesised that the effect of the land use on HAs properties depends on the particular size distribution. The research was performed in three ecosystems: agricultural, forest, and meadow, located in Slovakia. From each of them, the samples of 4 soil types were taken: Chernozem, Luvisol, Planosol, and Cambisol. The soil samples were assayed for the content of total organic carbon (TOC) and the particle size distribution. HAs were extracted with the Schnitzer method and analysed for the elemental composition, spectrometric parameters in the UV-VIS range, and hydrophilic and hydrophobic properties, and the infrared spectra were produced. The research results have shown that the properties of HAs can be modified by the land use and the scope and that the direction of changes depends on the soil type. The HAs of Chernozem and Luvisol in the agri-ecosystem were identified with a higher "degree of maturity", as reflected by atomic ratios (H/C, O/C, O/H), absorbance coefficients, and the FT-IR spectra, as compared with the HAs of the meadow and forest ecosystem. However, as for the HAs of Cambisol, a higher "degree of maturity" was demonstrated for the meadow ecosystem, as compared with the HAs of the agri- and forest ecosystem. The present research has clearly identified that the content of clay is the factor determining the HAs properties. Soils with a higher content of the clay fraction contain HAs with a higher "degree of maturity".
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Affiliation(s)
- Magdalena Banach-Szott
- Department of Biogeochemistry and Soil Science, University of Science and Technology, 6 Bernardynska St, 85-029 Bydgoszcz, Poland
| | - Bozena Debska
- Department of Biogeochemistry and Soil Science, University of Science and Technology, 6 Bernardynska St, 85-029 Bydgoszcz, Poland
| | - Erika Tobiasova
- Department of Soil Science, Slovak University of Agriculture in Nitra, 2 Tr. A. Hlinku St, 94976 Nitra, Slovakia
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Zykova MV, Brazovsky KS, Veretennikova EE, Danilets MG, Logvinova LA, Romanenko SV, Trofimova ES, Ligacheva AA, Bratishko KA, Yusubov MS, Lyapkov AA, Belousov MV. New artificial network model to estimate biological activity of peat humic acids. ENVIRONMENTAL RESEARCH 2020; 191:109999. [PMID: 32784018 DOI: 10.1016/j.envres.2020.109999] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 07/05/2020] [Accepted: 07/19/2020] [Indexed: 06/11/2023]
Abstract
PURPOSE This article focuses on new method to estimate biological activity of peat humic acids (HAs) using artificial neural network (ANN) to process spectroscopic measurements in infrared and visible ranges. Conventional approaches generally rely on biological models and direct detection of chemical substances related to bioactivity. These methods proved to be accurate and reliable, but at the expense of speed and simplicity. MATERIALS AND METHODS Recently, a conception of quantitative structure-activity relationship (QSAR) has been introduced and successfully implemented to predict effects of HAs on toxicity of polycyclic aromatic hydrocarbons. Our research stems from this conception, but employs multilayer perceptron (MLP) model to improve overall performance. The developed MLP model allowed us to estimate biological activity of the complete vertical peat cores collected from oligotrophic peat bog, located in southern taiga zone of West Siberia (north-eastern spurs of the Great Vasyugan Mire, 56°58' N 82о36' E). In total, 42 samples taken from the cores were collected. The protocol included spectroscopy (in infrared and visible ranges) and biological model with peritoneal activated macrophages as a reference method to directly measure biological activity of HAs. RESULTS and discussion. Numerical experiments confirmed consistency of the measured and estimated bioactivity, coefficient of determination R2 = 0.97. These experiments also showed that the MLP model significantly outperforms conventional linear multiple regression models, mainly due to essential nonlinearity of structure-activity relationships. CONCLUSIONS Our research demonstrates that biological activity of HAs extracted from peat samples can be estimated using an artificial neural network model trained on infrared and visible spectra.
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Affiliation(s)
- Maria V Zykova
- Siberian State Medical University, Tomsk, 634050, Russia.
| | | | - Elena E Veretennikova
- Siberian State Medical University, Tomsk, 634050, Russia; Institute of Monitoring of Climatic and Ecological Systems RAS, Russia
| | - Marina G Danilets
- Goldberg Research Institute of Pharmacology and Regenerative Medicine, Tomsk NRMC, Tomsk, 634050, Russia
| | | | - Sergey V Romanenko
- Siberian State Medical University, Tomsk, 634050, Russia; National Research Tomsk Polytechnic University, Tomsk, 634050, Russia
| | - Evgenia S Trofimova
- Goldberg Research Institute of Pharmacology and Regenerative Medicine, Tomsk NRMC, Tomsk, 634050, Russia
| | - Anastasia A Ligacheva
- Goldberg Research Institute of Pharmacology and Regenerative Medicine, Tomsk NRMC, Tomsk, 634050, Russia
| | - Kristina A Bratishko
- Siberian State Medical University, Tomsk, 634050, Russia; National Research Tomsk Polytechnic University, Tomsk, 634050, Russia
| | - Mekhman S Yusubov
- National Research Tomsk Polytechnic University, Tomsk, 634050, Russia
| | - Alexey A Lyapkov
- National Research Tomsk Polytechnic University, Tomsk, 634050, Russia
| | - Michael V Belousov
- Siberian State Medical University, Tomsk, 634050, Russia; National Research Tomsk Polytechnic University, Tomsk, 634050, Russia
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Li Y, Hu B, Gao S, Tong X, Jiang L, Chen X, An S, Zhang F. Comparison of 17β-estradiol adsorption on soil organic components and soil remediation agent-biochar. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 263:114572. [PMID: 32315821 DOI: 10.1016/j.envpol.2020.114572] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2019] [Revised: 03/14/2020] [Accepted: 04/08/2020] [Indexed: 06/11/2023]
Abstract
Steroid estrogen residues (SEs) in the soil have attracted growing attention because of their potential for endocrine disruption. Soil organic matter (SOM) and soil remediation agent-biochar, both have important influences on the fate of SEs in the soil environment. This study compared the adsorption of 17β-estradiol (E2) on wheat straw biochar (W-BC) and cow manure biochar (C-BC) with main SOM components including biomacromolecules (cellulose, collagen and lignin) and humic acids (HA). The impact of pyrolysis temperature (350 °C, 550 °C, and 700 °C) on the adsorption capacity of biochar and different concentrations NaClO oxidation on the adsorption capacity of HA were also investigated. The experimental results showed that the adsorption of E2 by biomolecules conformed to the linear isotherm (R2 > 0.88), and the adsorption of E2 on biochars and HA were well described by the Langmuir and Freundlich isotherm (R2 > 0.94). Meanwhile, the order of the E2 adsorption capacity of sorbents was W-BC > C-BC > HA > lignin > collagen > cellulose. The adsorption capacity of biochar and SOM for E2 increased with the enhancement of aromaticity and hydrophobicity and the reduction of polarity. In addition, the increase of pyrolysis temperature of biochars also promoted the adsorption capacity of E2, while oxidation treatment with NaClO reduced the adsorption capacity of HA to E2. These results deepened the understanding of the adsorption behaviour of E2 on SOM and biochar, and expanded the understanding of the behaviour of SEs in the soil environment.
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Affiliation(s)
- Yanxia Li
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, 100875, Beijing, China.
| | - Baiyang Hu
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, 100875, Beijing, China
| | - Shiying Gao
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, 100875, Beijing, China
| | - Xin Tong
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, 100875, Beijing, China
| | - Linshu Jiang
- Beijing University of Agriculture, Beijing, 102206, China
| | - Xingcai Chen
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, 100875, Beijing, China
| | - Siyu An
- State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, 100875, Beijing, China
| | - Fengsong Zhang
- Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, 100101, Beijing, China
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Shakeri Yekta S, Hedenström M, Stehr JE, Dario M, Hertkorn N, Björn A. Pretreatment of anaerobic digester samples by hydrochloric acid for solution-state 1H and 13C NMR spectroscopic characterization of organic matter. CHEMOSPHERE 2018; 199:201-209. [PMID: 29438947 DOI: 10.1016/j.chemosphere.2018.02.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 02/02/2018] [Accepted: 02/04/2018] [Indexed: 06/08/2023]
Abstract
Pretreatment of anaerobic digester samples by hydrochloric acid (HCl) resulted in removal of Fe-based mineral and coordination compounds, attenuating their interferences with solution-state nuclear magnetic resonance (NMR) spectroscopic characterization of the solid phase organic matter. Substrate (influent) and digestate (effluent) samples from two full-scale anaerobic digesters, designated CD (co-digester) and SSD (sewage sludge digester), were investigated. Pretreatment of CD samples with 0.2-2.0 mol l-1 HCl and pretreatment of SSD samples with 1.0-3.0 mol l-1 HCl removed 96-100% and 76-80% of total Fe, respectively. Pretreatment declined overall paramagnetic characteristics of digestate samples, manifested by 50% (CD) and 70% (SSD) decrease in electron paramagnetic resonance signal intensities. As a result, meaningful solution-state 1H,13C heteronuclear single quantum coherence and 1H NMR spectra of DMSO-d6 soluble organic matter could be acquired. Sample pretreatment with the lowest concentration of HCl resulted in alteration of C:N ratios in solid phase, likely due to removal of labile organic and inorganic C- and N-containing compounds, while elevating the HCl concentration did not further change the C:N ratios. Furthermore, sample pretreatment increased the solubility of carbohydrates and proteins in DMSO-d6, enabling the detection of NMR resonances from certain structural units of carbohydrates (e.g. anomeric O2CH) and proteins (e.g. CHα in amino acids). Both attenuation of the paramagnetic matrix as well as an enhanced solubility of carbohydrate and protein fractions of the samples in DMSO-d6 solvent contributed to an improved molecular characterization of anaerobic digester samples by solution-state NMR analysis.
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Affiliation(s)
- Sepehr Shakeri Yekta
- Department of Thematic Studies-Environmental Change and Biogas Research Center, Linköping University, 581 83 Linköping, Sweden.
| | | | - Jan Eric Stehr
- Department of Physics, Chemistry and Biology, Linköping University, 581 83 Linköping, Sweden
| | - Mårten Dario
- Department of Thematic Studies-Environmental Change and Biogas Research Center, Linköping University, 581 83 Linköping, Sweden
| | - Norbert Hertkorn
- Helmholtz Center Munich, German Research Center for Environmental Health, Research Unit Analytical Biogeochemistry (BGC), 85764 Neuherberg, Germany
| | - Annika Björn
- Department of Thematic Studies-Environmental Change and Biogas Research Center, Linköping University, 581 83 Linköping, Sweden
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Swiech WM, Hamerton I, Zeng H, Watson DJ, Mason E, Taylor SE. Water-based fractionation of a commercial humic acid. Solid-state and colloidal characterization of the solubility fractions. J Colloid Interface Sci 2017; 508:28-38. [PMID: 28818654 DOI: 10.1016/j.jcis.2017.08.031] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2017] [Revised: 08/09/2017] [Accepted: 08/10/2017] [Indexed: 11/28/2022]
Abstract
BACKGROUND AND HYPOTHESIS Humic acid (HA) is of considerable environmental significance, being a major component of soil, as well as being considered for application in other technological areas. However, its structure and colloidal properties continue to be the subject of debate, largely owing to its molecular complexity and association with other humic substances and mineral matter. As a class, HA is considered to comprise supramolecular assemblies of heterogeneous species, and herein we consider a simple route for the separation of some HA sub-fractions. EXPERIMENTS A commercial HA sample from Sigma-Aldrich has been fractionated into two soluble (S1, S2) and two insoluble (I1, I2) fractions by successive dissolution in deionized water at near-neutral pH. These sub-fractions have been characterized by solution and solid-state approaches. FINDINGS Using this simple approach, the HA has been shown to contain non-covalently bonded species with different polarity and water solubility. The soluble and insoluble fractions have very different chemical structures, as revealed particularly by their solid-state properties (13C NMR and IR spectroscopy, and TGA); in particular, S1 and S2 are characterized by higher carbonyl and aromatic contents, compared with I1 and I2. As shown by solution SAXS measurements and AFM, the soluble fractions behave as hydrophilic colloidal aggregates of at least 50nm diameter.
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Affiliation(s)
- Weronika M Swiech
- Centre for Petroleum and Surface Chemistry, Department of Chemistry, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, Surrey GU2 7XH, UK
| | - Ian Hamerton
- Department of Chemistry, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, Surrey GU2 7XH, UK
| | - Huang Zeng
- BP America, Upstream Technology, 501 Westlake Blvd., Houston, TX 77079, USA
| | - David J Watson
- Department of Chemistry, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, Surrey GU2 7XH, UK
| | - Eleonore Mason
- Department of Chemistry, University of Reading, Reading RG6 6AD, UK
| | - Spencer E Taylor
- Centre for Petroleum and Surface Chemistry, Department of Chemistry, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, Surrey GU2 7XH, UK.
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Leone V, Iovino P, Capasso S, Trifuoggi M, Musmarra D. Sorption of benzene derivatives onto insolubilized humic acids. CHEMICAL PAPERS 2017. [DOI: 10.1007/s11696-017-0337-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Ren D, Huang B, Yang B, Pan X, Dionysiou DD. Mitigating 17α-ethynylestradiol water contamination through binding and photosensitization by dissolved humic substances. JOURNAL OF HAZARDOUS MATERIALS 2017; 327:197-205. [PMID: 28068644 DOI: 10.1016/j.jhazmat.2016.12.054] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Revised: 12/25/2016] [Accepted: 12/27/2016] [Indexed: 06/06/2023]
Abstract
Photodegradation is an important abiotic pathway transforming organic pollutants in natural waters. Humic substances (HS), including humic and fulvic acids, are capable of accelerating the photodegradation of steroid estrogens. However, how the photodegradtion of the emerging pollutants influenced by HS is not clear. Thus, we studied the roles and mechanisms of HS in inducing the photodegradation of 17α-ethynylestradiol (EE2). HS generally induces EE2 photodegradation through binding and reactive species generation. Apart from hydroxyl radical (HO), the excited triplets of humic substances (3HS*) are other key reactive species degrading EE2 by abstracting electrons. HO and 3HS* were responsible for about 60% of the overall EE2 photodegradation at 250μmol HS L-1. Most of EE2 molecules bound to the HS via H-bonding, π-π and hydrophobic interactions. The binding role of HS in promoting EE2 photodegradation was rationalized by 17β-estradiol competitive binding with EE2 to the humic and fulvic acids. Furthermore, HS-promoted photodegradation can alter EE2 toxicity to wheat, rice and Ormosia plants. This study extends our knowledge on the photochemical behaviors and ecological risks of steroid estrogens in natural waters.
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Affiliation(s)
- Dong Ren
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650500, China
| | - Bin Huang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650500, China
| | - Benqin Yang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650500, China
| | - Xuejun Pan
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650500, China.
| | - Dionysios D Dionysiou
- Environmental Engineering and Science Program, Department of Biomedical, Chemical, and Environmental Engineering, University of Cincinnati, Cincinnati, OH 45221, USA.
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Ren J, Liu J, Chen J, Liu X, Li F, Du P. Effect of ferrous sulfate and nitrohumic acid neutralization on the leaching of metals from a combined bauxite residue. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:9325-9336. [PMID: 28233201 DOI: 10.1007/s11356-017-8605-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Accepted: 02/07/2017] [Indexed: 06/06/2023]
Abstract
Bauxite residue neutralization is intended to open opportunities for revegetation and reuse of the residue. Ferrous sulfate (FS) and nitrohumic acid (NA) were two kinds of materials studied for pH reduction of the residue from 10.6 to 8.3 and 8.1, respectively. The effects of FS and NA on the leaching of metals from a combined bauxite residue were investigated by using sequential and multiple extraction procedures. Neutralization with FS and NA restricted the leaching of Al, V, and Pb from the residue but promoted the leaching of Fe, Cu, Mn, and Ni, consistent with the changes in the potentially mobile fractions. With the exceptions of Pb and Ni, leaching of metals increased during a 10-day extraction period. However, the maximum leaching of Al, V, Pb, Fe, Cu, Mn, and Ni from neutralized bauxite residue were 0.46 mg/L, 59.3, 12.9, 167, 95.3, 15.5, and 14.5 μg/L, respectively, which were under the corresponding limits in the National Standard (GB/T 14848-93). Although it is necessary to consider the continued leaching of metals during neutralization, both maximum and accumulation leaching concentrations of metals from a combined bauxite residue were too low to pose a potential environmental risk.
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Affiliation(s)
- Jie Ren
- College of Water Science, Beijing Normal University, Beijing, 100875, People's Republic of China
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China
| | - Jidong Liu
- College of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China
| | - Juan Chen
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China
| | - Xiaolian Liu
- College of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, China
| | - Fasheng Li
- College of Water Science, Beijing Normal University, Beijing, 100875, People's Republic of China
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China
| | - Ping Du
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China.
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12
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Ren D, Huang B, Yang B, Chen F, Pan X, Dionysiou DD. Photobleaching alters the photochemical and biological reactivity of humic acid towards 17α-ethynylestradiol. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2017; 220:1386-1393. [PMID: 27825843 DOI: 10.1016/j.envpol.2016.10.096] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Revised: 10/21/2016] [Accepted: 10/31/2016] [Indexed: 06/06/2023]
Abstract
Dissolved humic acid (HA) is ubiquitous in natural waters. Its presence significantly changes the photo-and bio-degradation of some organic pollutants in natural waters. The effects of photobleaching on the composition, photosensitizing property and bioavailability of HA were investigated here along with the subsequent influence on its photochemical and biological reactivity in mediating 17α-ethynylestradiol (EE2) degradation. Photobleaching transformed the refractory HA into some small molecules, including organic acids and aliphatics. Along with composition alteration, the photochemical reactivity of HA towards EE2 was slightly depressed, with 9% of the removal rate inhibited by a 70-h photobleaching. Contrarily, the reactivity of HA in mediating EE2 biodegradation by E. coli was significantly promoted by a short-term photobleaching. Compared to the biodegradation of EE2 in the pristine HA, the 10-h photobleached HA increased the biodegradation removal rate of EE2 by 25%, reaching its peak value of about 60%. However, the EE2 biodegradation was inhibited by further irradiation, and the removal rate of EE2 decreased to that in the pristine HA systems. Because no substrate competition was found between EE2 and formate or glucose, EE2 biodegradation mediated by HA in natural waters may not be affected by coexistent organics. Photodegradation and biodegradation of EE2 mediated by HA thus can be combined together by photobleaching to remove pollutants from natural waters. The results reported here could assist environmental risk assessment with respect to EE2 in natural aquatic systems.
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Affiliation(s)
- Dong Ren
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China
| | - Bin Huang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China
| | - Benqin Yang
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China
| | - Fang Chen
- College of Environmental Science and Engineering, China West Normal University, Nanchong 637009, China
| | - Xuejun Pan
- Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China.
| | - Dionysios D Dionysiou
- Department of Biomedical, Chemical, and Environmental Engineering, University of Cincinnati, Cincinnati, OH 45221, USA.
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13
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Chiang PN, Tong OY, Chiou CS, Lin YA, Wang MK, Liu CC. Reclamation of zinc-contaminated soil using a dissolved organic carbon solution prepared using liquid fertilizer from food-waste composting. JOURNAL OF HAZARDOUS MATERIALS 2016; 301:100-105. [PMID: 26355411 DOI: 10.1016/j.jhazmat.2015.08.015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Revised: 08/06/2015] [Accepted: 08/07/2015] [Indexed: 06/05/2023]
Abstract
A liquid fertilizer obtained through food-waste composting can be used for the preparation of a dissolved organic carbon (DOC) solution. In this study, we used the DOC solutions for the remediation of a Zn-contaminated soil (with Zn concentrations up to 992 and 757 mg kg(-1) in topsoil and subsoil, respectively). We then determined the factors that affect Zn removal, such as pH, initial concentration of DOC solution, and washing frequency. Measurements using a Fourier Transform infrared spectrometer (FT-IR) revealed that carboxyl and amide were the major functional groups in the DOC solution obtained from the liquid fertilizer. Two soil washes using 1,500 mg L(-1) DOC solution with a of pH 2.0 at 25°C removed about 43% and 21% of the initial Zn from the topsoil and subsoil, respectively. Following this treatment, the pH of the soil declined from 5.4 to 4.1; organic matter content slightly increased from 6.2 to 6.5%; available ammonium (NH4(+)-N) content increased to 2.4 times the original level; and in the topsoil, the available phosphorus content and the exchangeable potassium content increased by 1.65 and 2.53 times their initial levels, respectively.
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Affiliation(s)
- Po-Neng Chiang
- Experimental Forest, National Taiwan University, Chushan, Nantou County, 55750, Taiwan
| | - Ou-Yang Tong
- Department of Environment Engineering, College of the Environment and Ecology, and The Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystem, Xiamen University, Xiamen, P.R. China
| | - Chyow-San Chiou
- Department of Environmental Engineering, National Ilan University, Ilan 26047, Taiwan
| | - Yu-An Lin
- Department of Environmental Engineering, National Ilan University, Ilan 26047, Taiwan
| | - Ming-Kuang Wang
- Department of Animal Science, National Ilan University, Ilan 26047, Taiwan
| | - Cheng-Chung Liu
- Department of Agricultural Chemistry, National Taiwan University, Taipei 10617, Taiwan.
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14
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New insights of superoxide dismutase inhibition of pyrogallol autoxidation. Mol Cell Biochem 2014; 400:277-85. [DOI: 10.1007/s11010-014-2284-z] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Accepted: 11/15/2014] [Indexed: 11/28/2022]
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15
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Ghouas H, Haddou B, Kameche M, Derriche Z, Gourdon C. Extraction of humic acid by coacervate: investigation of direct and back processes. JOURNAL OF HAZARDOUS MATERIALS 2012; 205-206:171-178. [PMID: 22260753 DOI: 10.1016/j.jhazmat.2011.12.057] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2011] [Revised: 12/19/2011] [Accepted: 12/20/2011] [Indexed: 05/31/2023]
Abstract
The two aqueous phases extraction process is widely used in environmental clean up of industrial effluents and fine chemical products for their reuse. This process can be made by cloud point of polyethoxylated alcohols and micellar solubilization phenomenon. It is commonly called "coacervate extraction" and is used, in our case, for humic acid extraction from aqueous solution at 100mg/L. The surfactants used are alcohol polyethoxylate and alkylphenol polyethoxylate. Phase diagrams of binary water/surfactant and pseudo-binary are plotted. The extraction results are expressed by the following responses: percentage of solute extracted, E (%), residual concentrations of solute and surfactant in dilute phase (X(s,w), and X(t,w) respectively) and volume fraction of coacervate at equilibrium (ϕ). For each parameter, the experimental results are fitted to empirical equations in three dimensions. The aim of this study is to find out the best compromise between E and ϕC. The comparison between experimental and calculated values allows models validation. Sodium sulfate, cetyltrimethylammonium bromide (CTAB) addition and pH effect are also studied. Finally, the possibility of recycling the surfactant has been proved.
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Affiliation(s)
- H Ghouas
- U.S.T. Oran, Faculté des Sciences, Département de Chimie BP 1505, M'Nouar, Oran, Algeria
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16
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Canistro D, Melega S, Ranieri D, Sapone A, Gustavino B, Monfrinotti M, Rizzoni M, Paolini M. Modulation of cytochrome P450 and induction of DNA damage in Cyprinus carpio exposed in situ to surface water treated with chlorine or alternative disinfectants in different seasons. Mutat Res 2012; 729:81-89. [PMID: 22001235 DOI: 10.1016/j.mrfmmm.2011.09.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2011] [Revised: 09/21/2011] [Accepted: 09/27/2011] [Indexed: 05/31/2023]
Abstract
Epidemiological studies have shown an association between consumption of disinfected drinking water and adverse health outcomes. The chemicals used to disinfect water react with occurring organic matter and anthropogenic contaminants in the source water, resulting in the formation of disinfection by-products (DBPs). The observations that some DBPs are carcinogenic in animal models have raised public concern over the possible adverse health effects for humans. Here, the modulation of liver cytochrome P450-linked monooxygenases (MFO) and the genotoxic effects in erythrocytes of Cyprinus carpio fish exposed in situ to surface drinking water in the presence of disinfectants, such as sodium hypochlorite (NaClO), chlorine dioxide (ClO(2)) and peracetic acid (PAA), were investigated in winter and summer. A complex induction/suppression pattern of CYP-associated MFOs in winter was observed for all disinfectants. For example, a 3.4- to 15-fold increase was recorded of the CYP2B1/2-linked dealkylation of penthoxyresorufin with NaClO (10 days) and PAA (20 days). In contrast, ClO(2) generated the most notable inactivation, the CYP2E1-supported hydroxylation of p-nitrophenol being decreased up to 71% after 10 days' treatment. In summer, the degree of modulation was modest, with the exception of CYP3A1/2 and CYP1A1 supported MFOs (62% loss after 20 days PAA). The micronucleus (MN) induction in fish circulating erythrocytes was also analysed as an endpoint of genotoxic potential in the same fish population. Significant increases of MN induction were detected at the latest sampling time on fish exposed to surface water treated with chlorinate-disinfectants, both in winter (NaClO) and summer (NaClO and ClO(2)), while no effect was observed in fish exposed to PAA-treated water. These results show that water disinfection may be responsible for harmful outcomes in terms of MFO perturbation and DNA damage; if extrapolated to humans, they ultimately offer a possible rationale for the increased urinary cancer risk recorded in regular drinking water consumers.
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Affiliation(s)
- Donatella Canistro
- Dipartimento di Farmacologia, Alma-Mater Studiorum-Università di Bologna, Bologna, Italy.
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