INTERNATIONAL BIODETERIORATION & BIODEGRADATION
·
2020
·
IF 4.074
Yuxuan Liu,Yonghua Wang,Qianqian Wang,Beibei Wang,Xiaodan Liu,Bing Wu
Bisphenol A (BPA) as an endocrine-disrupting chemical has been widely detected in the aquatic environment, including Taihu Lake, China. Adsorption and bacterial removal in sediments play important roles in the fate of BPA in the aquatic environment, which might be influenced by the properties of the sediment. In this study, two types of sediments from Gonghu Bay and Meiliang Bay in the northern Taihu Lake were collected to investigate the fate of BPA in the sediments. Both sediments showed different adsorption properties to BPA. Due to the higher proportion of sand and total organic carbon (TOC) content in the Meiliang Bay sediment, its adsorption capacity was stronger than that in the Gonghu Bay sediment. Bacteria in both sediments could completely degrade BPA within 3–5 days. Based on the correlation analysis, Firmicutes and Cyanobacteria might be involved in BPA removal at the phyla level. At the genus level, Novosphingobium , Massilia, and Methylophilus were found to be related to the BPA removal in the Gonghu Bay sediment, and Acinetobacter , Bacillus and Pseudomonas were found in the Meiliang Bay sediment. The different bacterial communities might be important reasons for the different removal capacity of BPA in both sediments. The above results provide basic information for the assessment and management of BPA in the Taihu Lake, and improve the understanding of BPA removal in sediments.
研究领域:
环境科学
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微生物学
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水生生态学
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DOI
高影响因子
Environmental Chemistry
·
2024
·Vol. 20
·期 8
·339-353
·
IF 2
Minhao Wang,Hongran Ding,Guiyu Liang,Xueyin Wang,Luyue Yang,Ting Tong,Dongling Li,Xiao Zhou,Haifei Zhang,Fang Wang,Xiaowei Tie,Lei Han
Environmental context Environmental estrogens can disrupt the normal functioning of endocrine systems, and their occurrence in drinking water sources could cause potential health risk. We investigated concentrations of four estrogens in the lakes from the Taihu Basin, and found that BPA and EE2 were elevated in some sites. However, concentrations of all four environmental estrogens were below the national standards, and caused no health threat to local population.Rationale The Taihu Basin is a critical freshwater ecosystem susceptible to contamination from various anthropogenic activities. Environmental estrogens (also known as endocrine disrupting chemicals, EDCs) are exogenous substances that can disrupt the normal functioning of endocrine systems. The contamination of water by EDCs is primarily caused by effluents from sewage treatment plants and livestock poultry farms. In this study, we assessed the spatial distribution and potential risks of environmental estrogens in surface water in the Taihu basin. Various statistical evaluations were employed to establish connections between measured concentration of heavy elements, estrogens and physicochemical parameters, to identify potential sources of these contaminants.Methodology Water samples from 44 sampling points in five lakes in Suzhou were taken for evaluation of environmental estrogens. Gas chromatography–mass spectrometry was used for identification of concentrations of estrone (E1), estradiol (E2), ethinyl estradiol (EE2) and bisphenol A (BPA). Inductively coupled plasma–mass spectrometry was employed to identify heavy element concentrations in water samples.Results Environmental estrogen concentrations were detected ranging from 0.001 to 209ngL–1, with the highest attributed to BPA, whereas E1, E2 and EE2 were comparatively lower. Correlation evaluation between environmental estrogens, physicochemical parameters and heavy element contents revealed a positive correlation (P<0.05) between the total chromium and environmental estrogen contents. Consequently, the risk entropy value of Shanghu Lake exceeded 0.5, indicating a potentially high risk of estrogenic activity.Discussion The widespread distribution and high concentrations of BPA in freshwater raise urgent concerns, highlighting the need for frequent monitoring of environmental estrogens in surface waters throughout the year to mitigate potential risks in the future. Our results suggest that a potential estrogen risk exists in the Shanghu Lake in the Taihu basin. Potential treatment methods for endocrine disruptors have been proposed, which could provide actionable plans for stakeholders.
研究领域:
环境科学
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公共卫生
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DOI
高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2023
·
IF 3.8
Yifang Mi,Wenqiang Wang,Sen Zhang,Yalong Guo,Yufeng Zhao,Guojin Sun,Zhihai Cao
Biomass-based activated carbon (CBACs) was successfully prepared by pyrolysis-activation of Taihu cyanobacteria. When the impregnation ratio and activated temperature were 2 and 800 o C, respectively, the optimal CBACs possessed an ultra-high specific surface (2178.90 m 2 ·g −1 ) and plenty of micro-and meso-pores, as well as a high pore volume (1.01 cm 3 ·g −1 ). Ascribed to ultra-high surface area, π-π interaction, electrostatic interaction, as well as hydrogen bonding interactions, the CBACs displayed huge superiority in efficient dye removal. The saturated methylene blue (MB) adsorption capacity by CBACs could be as high as 1143.4 mg·g −1 , superior to other reported biomass-activated carbons. The adsorption was endothermic and modelled well by the pseudo-second-order kinetic, intra-particle diffusion, and Langmuir models. This work presented the effectiveness of Taihu cyanobacteria adsorbent ascribed to its super large specific surface area and high adsorption ability.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
Environmental Sciences Europe
·
2018
·Vol. 30
·期 1
·1-13
·
IF 4.04
Li Qian,Wang Meng,Duan Lei,Qiu Yanling,Ma Taowu,Chen Ling,Breitholtz Magnus,Bergman Åke,Zhao Jianfu,Hecker Markus,Wu Lingling
Freshwater sediments have been recognized as a long-term sink and potential source for environmental pollutants released into the aquatic ecosystems. In this study, the sediment quality of Taihu Lake, which is susceptible to anthropogenic contamination, was assessed by a combination of chemical analytical and biological end points. Specifically, the snail Bellamya aeruginosa was caged in situ at two locations representing different pollution levels for different exposure times (7, 14 and 21 days). At each of these time points, biochemical parameters, i.e., phase I biotransformation enzymes ethoxyresorufin-O-deethylase (EROD), the antioxidant enzymes superoxide dismutase and catalase, reactive oxygen species, protein carbonyl content and lipid peroxidation, were evaluated in the hepatopancreas of snails. In addition, surface sediments were collected for analysis of contaminants of concern, including inorganic pollutants, organochlorine pesticides, polychlorinated biphenyls and polybrominated diphenyl ethers.Chemical analyses revealed that sediments from Taihu Lake were contaminated with trace elements and organic pollutants. Concentrations of trace elements (Cu, Ni and As) and organochlorinated pesticides (4,4′-DDE) exceeded their corresponding threshold effect level according to the sediment quality assessment values for freshwater ecosystems in Canada, indicating that adverse biological effects may occur. All biomarkers, except EROD activity, were induced in snails during all exposure times. The integrated biomarker response index (IBR) indicated that during the initial exposure phase (7 days), B. aeruginosa were subjected to significant environmental stress, which diminished during later sampling time points.Results showed that IBR correlated well with the levels of environmental contaminants, demonstrating the applicability of this biomonitoring approach to complex environmental exposure scenarios.
研究领域:
环境科学
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毒理学
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生态学
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DOI
PubMed
高影响因子
Environmental Science-Nano
·
2019
·Vol. 6
·期 11
·3431-3441
·
IF 7.704
Bowen Xiao,Yinqing Zhang,Xiaolei Wang,Meng Chen,Binbin Sun,Tong Zhang,Lingyan Zhu
The wide production and utilization of nanoparticulate Ag and Ti inevitably result in their release into the environment. Thus far, limited information is available regarding to what extent the nanoparticulate Ag and Ti could accumulate in biota and magnify along the food chain in real natural aquatic environments. With the application of single particle inductively coupled plasma mass spectroscopy, we quantitatively demonstrated that both nanoparticulate Ag (18.8–41.0 nm) and Ti (46.6–116 nm) occurred in the water, sediment and aquatic organisms in Taihu Lake, China. Nanoparticulate Ag exhibited greater bioaccumulation potential compared to its other chemical counterparts, and also a greater bioaccumulation factor than nanoparticulate Ti. Sediment served as a main reservoir for nanoparticulate Ag and Ti, and acted as one important exposure source for invertebrates. According to the concentrations of nanoparticulate Ag and Ti in aquatic organisms at different trophic levels, including a variety of invertebrates and fish species, the total and nanoparticulate Ti appeared to be biodiluted in the food web with trophic magnification factors (TMFs) < 1. Conversely, biomagnification of nanoparticulate Ag was found in the fish food web with a TMF of 1.21, while the total Ag was biodiluted. These findings serve as the first line of evidence on the transfer behaviors of nanoparticulate Ag and Ti along the natural aquatic food chain and underline the distinctive bioaccumulation and biomagnification behaviors of nanoparticles as opposed to their other chemical counterparts.
研究领域:
环境科学
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生态学
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产品关联
DOI
高影响因子
Journal of Environmental Sciences
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2021
·
IF 5.565
Jiabao Li,Haifeng Zhang,Juan Wang,Zhiyong Yu,Hongyan Li,Min Yang
Although disinfection byproducts (DBPs) in drinking water have been suggested as a cancer causing factor, the causative compounds have not yet been clarified. In this study, we used liquid chromatography quadrupole-time-of-flight spectrometry (LC-QTOF MS) to identify the unknown disinfection byproducts (DBPs) in drinking water produced from Taihu Lake source water, which is known as a convergence point for the anthropogenic pollutants discharged from intensive industrial activities in the surrounding regions. In total, 91 formulas of DBPs were discovered through LC-QTOF MS nontarget screen, 81 of which have not yet been reported. Among the 91 molecules, 56 only contain bromine, 15 only contain chlorine and 20 DBPs have both bromine and chlorine atoms. Finally, five DBPs including 2,4,6-tribromophenol, 2,6-dibromo-4-chlorophenol, 2,6-dichloro-4-bromophenol, 4-bromo-2,6-di-tert-butylphenol and 3,6-dibromocarbazole were confirmed using standards. The former three compounds mainly formed in the predisinfection step (maximum concentration, 0.2-2.6 µg/L), while the latter two formed in the disinfection step (maximum concentration, 18.2-33.6 ng/L). In addition, 19 possible precursors of the discovered DBPs were detected, with the aromatic compounds being a major group. 2,6-di-tert-butylphenol as the precursor of 4-bromo-2,6-di-tert-butylphenol was confirmed with standard, with a concentration of 20.3 µg/L in raw water. The results of this study show that brominated DBPs which are possibly formed from industrial pollutants are relevant DBP species in drinking water produced form Taihu source water, suggesting protection of Taihu Lake source water is important to control the DBP risks.
研究领域:
环境科学
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公共卫生
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分析化学
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2019
·
IF 8.355
He Wang,Han Wang,Hui Zhao,Qun Yan
A novel biochar composite impregnated with α-Fe 2 O 3 in hierarchical porous structures (Fe(III)-ABC-20) was synthesized by means of pyrolysis combining with KOH activation using the yearly bloomed Taihu blue algae as resources. It was found that the biochar activated by KOH obtained the specific surface area of 1657.8 m 2 g −1 , nearly 92.6 times larger than that of the biochar without modification (17.9 m 2 g −1 ). Meanwhile, abundant oxygen-containing functional groups such as COOH, OH, etc. are introduced onto the surface of algae biochar. Besides, Fe(III) was successfully loaded onto the porous structure of biochar from combined characterization of XRD, SEM, TEM, FTIR and XPS. Under the optimized operating conditions of pH at 6, Fe(III)-ABC-20 and H 2 O 2 dosage of 0.5 g and 20 mM, adsorption equilibrium and Fenton-like reaction time at 20 and 60 min respectively, the biochar composite exhibited 98.87% removal rate of chelated nickel in electroplating wastewater. Moreover, the catalyst exerted better stability after four repeated experiments, as which still remained 93.26% of nickel removal. Meanwhile, electrochemical measurements revealed the presence of ligand to metal charge transfer (LMCT), indicating the promoting of Fenton-like reaction. Noticeably, degradation pathways of N,N,N′,N′-Tetrakis(2-hydroxypropyl) ethylenediamine (EDTP), one of the main complexing agents according to the component identification using mass spectrum within electroplating wastewater are proposed. EDTP might be first degraded to 2-hydroxypropanal or 2-Aminoethyl(ethyl) amine, then further degraded to acetaldehyde or ethylene, and finally oxidized to CO 2 and H 2 O. Therefore, the biochar composite developed here could provide a novel route for the resource utilization of blue algae and heavy metal removal in electroplating wastewater containing refractory complexing agent.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES
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2016
·
IF 2.687
Pengfei Zhu,Xia Ling,Wenwei Liu,Lingcan Kong,Yuyang Yao
A simple and fast analytical method for determination of eleven Polyfluorinated Compounds (PFCs) in source water was developed in the present work. The water sample was prepared without filtered through microfiltration membrane and 500 mL of source water was enriched by the solid phase extraction (SPE). The targent compounds were analyzed by ultra high performance liquid chromatography–tandem mass spectrometry (UHPLC–MS/MS). The optimized analytical method was validated in terms of recovery, precision and method detection limits (MDLs). The recovery values after correction with the corresponding labeled standard were between 97.3 and 113.0% for samples spiked at 5 ng/L, 10 ng/L and 20 ng/L. All PFCs showed good linearity and the linear correlation coefficient was over 0.99. The precisions were 1.0–9.0% (n = 6). As the result of the enrichment, the MDL values ranged from 0.03 to 1.9 ng/L and were enough for analysis of the trace levels of PFCs in the Taihu Lake. The method was further validated in determining the source water and the results showed that PFHxS, PFHxA, PFOA and PFOS were the primary PFCs in Taihu Lake which might be different from the other researches. The method can be used for determination of PFCs in water with a stable recovery, good reproducibility, low detection limit, less solvent consumption, time saving and labor saving. To our knowledge, this is the first method that describes the effect of the filter membrane on the determination of PFCs in water which might acquire more accurate concentration of PFCs in Taihu Lake.
研究领域:
环境科学
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分析化学
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产品关联
DOI
PubMed
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
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2025
·
IF 8
Langjie Ye,Guanyong Su
The current scope of environmental monitoring studies primarily focuses on organophosphate triesters (OPTEs), neglecting their potential transformation products, i.e. organophosphate diesters (OPDEs). Furthermore, there is a notable absence of comprehensive screening strategies for all potential OPDEs in environmental samples. Herein, we pioneered an effective and precise screening strategy, incorporating target, suspect, and functional group-dependent nontarget screening, founded on ultrahigh performance liquid chromatography-Q Exactive hybrid quadrupole-Orbitrap high-resolution mass spectrometry (UHPLC-Q-Orbitrap HRMS), and this strategy was applied to analyze n = 74 sediment samples, comprising 23 surface sediment samples and 51 sediment core samples, collected from Taihu Lake in eastern China during 2019. Through this analysis, we successfully identified 29 OPDEs, marking the first documentation of their presence in this region. Additionally, our study yielded noteworthy insights: 1) most OPDEs exhibited no significant correlations with their parent compounds, indicating their intricate origins within Taihu Lake; 2) two newly identified substances, distearyl phosphate (DSP) and diheptadecyl phosphate (DHP), were widespread and likely introduced through various rivers, potentially originating from chemical industry facilities or manufacturers situated along the rivers in the Taihu Lake basin; 3) vertical analysis revealed the pervasive presence of long-chain alkyl OPDEs in sediment cores from Taihu Lake, consistent with their high hydrophobicity. Collectively, this study has introduced an effective screening strategy successfully applied to comprehensively assess OPDEs in Taihu Lake sediments. This methodology holds promising potential for extension to various other environmental matrices or samples.
研究领域:
环境监测
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分析化学
·
环境科学
·
质谱分析
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色谱分析
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产品关联
DOI
PubMed
高影响因子
Scientific Reports
·
2017
·Vol. 7
·期 1
·1-11
·
IF 4.259
Wang Jixiang,Wang Yunyun,Qiu Hao,Sun Lin,Dai Xiaohui,Pan Jianming,Yan Yongsheng
Fluorescent molecularly imprinted polymers have shown great promise in biological or chemical separations and detection, due to their high stability, selectivity and sensitivity. In this work, fluorescent molecularly imprinted microsphere was synthesized via precipitation polymerization, which could separate efficiently and rapidly detect τ-fluvalinate (a toxic insecticide) in water samples, was reported. The fluorescent imprinted sensor showed excellent stability, outstanding selectivity and the limit of detection low to 12.14 nM, good regeneration ability which still kept good sensitivity after 8 cycling experiments and fluorescence quenching mechanism was illustrated in details. In addition, the fluorescent sensor was further used to detect τ-fluvalinate in real samples from Taihu Lake. Despite the relatively complex components of the environment water, the fluorescent imprinted microspheres sitll showed good recovery, clearly demonstrating the potental value of this smart sensor nanomaterial in environment monitoring.
研究领域:
环境科学
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分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
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2015
·
IF 2.762
Hong-xue Qi,Hui-zhen Li,Ping Ma,Jing You
A weight of evidence (WoE) framework has been applied to assess sediment quality of a typical freshwater lake, Tai Lake in China, where the sediments were contaminated by various chemicals but showed no acute lethality to the benthic invertebrate, Chironomus dilutus . A quantitative scoring method was employed to integrate three lines of evidence (LoE), including adverse effects in life cycle bioassays, biomarker responses, and bioavailability-based chemical analysis. Six biomarkers were determined in C. dilutus after the exposure to the sediments from Tai Lake and provided sensitive indication of sublethal effects at the molecular level. The biomarkers included cytochrome P450, glutathione S -transferase, carboxylesterase, acetylcholinesterase, catalase , and lipid peroxidation. The changes of the biomarkers were summarized for individual sampling sites by computing the integrated biomarker response (IBR) indices. Complementary information was also confirmed by the interrelationship of the LoEs. The IBR indices gained before pupation correlated well with the impairments of emergence of the midges, and altered acetylcholinesterase was corroborated by the detection of chlorpyrifos , an organophosphate pesticide . The relationship between bioavailable toxic units estimated by Tenax extractable concentrations of chemicals in sediment and the observed toxicity in the midges helped to identify the putative toxicity contributors to C. dilutus . Overall, the WoE method clearly distinguished the contaminated sites and ranked them by the level of contamination. Sediment-associated pesticides, particularly γ -hexachlorocyclohexane and chlorpyrifos, were the possible contributors to chronic toxicity to the midges.
研究领域:
环境科学
·
生态毒理学
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产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2013
·Vol. 21
·期 3
·2122-2131
·
IF 2.618
Ou Hua-Se,Wei Chao-Hai,Deng Yang,Gao Nai-Yun,Ren Yuan,Hu Yun
A novel dual coagulant system of polyaluminum chloride sulfate (PACS) and polydiallyldimethylammonium chloride (PDADMAC) was used to treat natural algae-laden water from Meiliang Gulf, Lake Taihu. PACS (Al n (OH) m Cl 3n-m-2k (SO 4 ) k ) has a mass ratio of 10 %, a SO 4
2− /Al 3
+ mole ratio of 0.0664, and an OH/Al mole ratio of 2. The PDADMAC ([C 8 H 16 NCl] m ) has a MW which ranges from 5 × 10 5 to 20 × 10 5 Da. The variations of contaminants in water samples during treatments were estimated in the form of principal component analysis (PCA) factor scores and conventional variables (turbidity, DOC, etc.). Parallel factor analysis determined four chromophoric dissolved organic matters (CDOM) components, and PCA identified four integrated principle factors. PCA factor 1 had significant correlations with chlorophyll-a ( r = 0.718), protein-like CDOM C1 (0.689), and C2 (0.756). Factor 2 correlated with UV 254 (0.672), humic-like CDOM component C3 (0.716), and C4 (0.758). Factors 3 and 4 had correlations with NH 3 -N (0.748) and T-P (0.769), respectively. The variations of PCA factors scores revealed that PACS contributed less aluminum dissolution than PAC to obtain equivalent removal efficiency of contaminants. This might be due to the high cationic charge and pre-hydrolyzation of PACS. Compared with PACS coagulation (20 mg L −1 ), the removal of PCA factors 1, 2, and 4 increased 45, 33, and 12 %, respectively, in combined PACS–PDADMAC treatment (0.8 mg L −1 + 20 mg L −1 ). Since PAC contained more Al (0.053 g/1 g) than PACS (0.028 g/1 g), the results indicated that PACS contributed less Al dissolution into the water to obtain equivalent removal efficiency.
研究领域:
环境科学
·
水处理工程
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产品关联
DOI
PubMed
高影响因子
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