Antibiotics-Basel
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2024
·Vol. 13
·期 9
·820
·
IF 4.3
Pengfei Sun,Yongyu Tan,Zuhao Zhu,Tinglong Yang,Shalini Thevarajan,Li Zhang
In recent years, the widespread application of antibiotics has raised global concerns, posing a severe threat to ecological health. In this study, the occurrence, source, and ecological risks of 39 antibiotics belonging to 5 classes in mangrove sediments from Lianzhou Bay, China, were assessed. The total concentrations of the antibiotics (∑39 antibiotics) ranged from 65.45 to 202.24 ng/g dry weight (dw), with an average of 142.73 ± 36.76 ng/g dw. The concentrations of these five classes of antibiotics were as follows: Sulfonamides (SAs) > Tetracyclines (TCs) > Fluoroquinolones (QUs) > Penicillin (PCs) > Macrolides (MLs). The spatial distribution of antibiotics varied as high tidal zone > middle tidal zone > low tidal zone. The total organic carbon (TOC), pH, nitrate (NO 3 − -N), and nitrite (NO 2 − -N) of the sediment significantly influenced the distribution of antibiotics ( p < 0.05). A source analysis identified untreated sewage from aquaculture as the primary source of antibiotics in the local mangrove. A risk assessment revealed that ciprofloxacin, norfloxacin, ofloxacin of QUs, and tetracycline of TCs exhibited medium risks to algae in certain sampling sites, while other antibiotics exhibited low or no risks to all organisms. Nevertheless, the total risk of all the detected antibiotics to algae was medium in 95% of the sites. The overall ecological risk level of antibiotics in the middle tidal zone was slightly lower than in the high tidal zone and the lowest in the low tidal zone. In summary, the experimental results provided insights into the fate and transport behaviors of antibiotics in mangrove sediments from Lianzhou Bay.
研究领域:
环境科学
·
生态学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF GEOCHEMICAL EXPLORATION
·
2019
·
IF 3.472
Yunmei Cai,Jiandong Wu,Yanlin Zhang,Zheng Lin,Yisheng Peng
In order to clarify the distribution, sources, and ecological risk of 16 polycyclic aromatic hydrocarbons (PAHs) in sediments of mangrove wetland located in Shantou, twenty eight surface sediments were collected. The concentration of PAHs ranged from 79.74 to 853.17 ng g −1 dry weight. The concentration of PAHs of sediment in the high tides was higher than that in the low tides and higher in mangrove-planting area than that in non-mangrove growth zone. The spatial distribution of PAHs in the sediment of mangrove wetland was mainly influenced by input sources and tidal currents . The result of the principal component analysis-multiple linear regression model indicated that the major source of PAHs in the studied area was coal burning. However, the adverse effect of PAHs was weak to biota. Undeniably, a lot more systematic explorations are demanded in future to investigate the PAHs contamination in the mangrove wetlands in small–medium cities with the development of coastal zone economy.
研究领域:
环境科学
·
海洋生态学
✓ 已验证
DOI
高影响因子
CHEMOSPHERE
·
2017
·
IF 4.208
Yong Li,Ling Long,Jing Ge,Li-xuan Yang,Jin-jin Cheng,Ling-xiang Sun,Changying Lu,Xiang-yang Yu
Polycyclic aromatic hydrocarbons (PAHs) accumulated in agricultural soils are likely to threaten human health and ecosystem though the food chain, therefore, it is worth to pay more attention to soil contamination by PAHs. In this study, the presence, distribution and risk assessment of 16 priority PAHs in rice-wheat continuous cropping soils close to industrial parks of Suzhou were firstly investigated. The concentrations of the total PAHs ranged from 125.99 ng/g to 796.65 ng/g with an average of 352.94 ng/g. Phenanthrene (PHE), fluoranthene (FLT), benzo [a] anthracene (BaA) and pyrene (PYR) were the major PAHs in those soil samples. The highest level of PAHs was detected in the soils around Chemical plant and Steelworks, followed by Printed wire board, Electroplate Factory and Paper mill. The composition of PAHs in the soils around Chemical plant was dominated by 3-ring PAHs, however, the predominant compounds were 4, 5-ring PAHs in the soils around other four factories. Meanwhile, the concentration of the total PAHs in the soils close to the factories showed a higher level of PAHs in November (during rice harvest) than that in June (during wheat harvest). Different with other rings of PAHs, 3-ring PAHs in the soils around Chemical plant and Steelworks had a higher concentration in June. The results of principal component analysis and isomeric ratio analysis suggested that PAHs in the studied areas mainly originated from biomass, coal and petroleum combustion. The risk assessment indicated that higher carcinogenic risk was found in those sites closer to the industrial park.
研究领域:
环境科学
·
农业生态学
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产品关联
DOI
PubMed
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2016
·
IF 3.976
Shalini Suryawanshi,Amit Singh Chauhan,Ritika Verma,Tarun Gupta
There is a growing concern regarding the adverse health effects due to indoor air pollution in developing countries including India. Hence, it becomes important to study the causes and sources of indoor air pollutants . This study presents the indoor concentrations of PM 0.6 (particles with aerodynamic diameter less than 0.6 μm) and identifies sources leading to indoor air pollution. Indoor air samples were collected at IIT Kanpur campus. Ninety-eight PM 0.6 samples were collected during November 2013 to September 2014. PM 0.6 concentration was measured using a single stage impactor type PM 0.6 sampler. The average PM 0.6 concentration indoor was about 94.44 μg/m 3 . Samples collected were then analysed for metal concentrations using ICP-OES (Inductively Coupled Plasma – Optical Emission Spectrometer). Eight metals Ba, Ca, Cr, Cu, Fe, Mg, Ni and Pb were quantified from PM samples using ICP-OES. Positive Matrix Factorization (PMF) was used for source apportionment of indoor air pollution. PMF is a factor analysis tool which helps in resolving the profile and contribution of the sources from an unknown mixture. Five possible sources of indoor pollutants were identified by factor analysis – (1) Coal combustion (21.8%) (2) Tobacco smoking (9.8%) (3) Wall dust (25.7%) (4) Soil particles (17.5%) (5) Wooden furniture/paper products (25.2%).
研究领域:
环境科学
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公共卫生
✓ 已验证
DOI
PubMed
高影响因子
Chemosensors
·
2024
·Vol. 12
·期 10
·220
·
IF 3.7
Ting Hu,Yitao Xia,You Wang,Li Lin,Rong An,Ling Xu,Xiangdong Qing
Polycyclic aromatic hydrocarbons (PAHs) are a group of organic compounds that are both toxic and hazardous to human health and ecological systems. In recent work, a novel analytical strategy based on the chemometric-assisted HPLC-DAD method was proposed for the quantification and source apportionment of eight PAHs in PM10 samples. Compared to traditional chromatographic methods, this approach does not require the purification of complex PM10 samples. Instead, it utilizes a mathematical separation method to extract analytes’ profiles from overlapping chromatographic peaks, enabling precise quantification of PAHs in PM10. Firstly, 40 PM10 samples collected in Loudi city during two sampling periods were used for analysis. Subsequently, the second-order calibration method based on alternating trilinear decomposition (ATLD) was employed to handle the three-way HPLC-DAD data. Finally, the pollution sources of PAHs were analyzed by the feature component analysis method according to the obtained relative concentration matrix. For the validation model, the average recoveries of eight PAHs were between (88.8 ± 7.6)% and (105.6 ± 7.5)%, and the root-mean-square errors of prediction ranged from 0.03 μg mL−1to 0.47 μg mL−1. The obtained limits of quantification for eight PAHs were in the range of 0.0050 μg mL−1to 0.079 μg mL−1. For actual PM10 samples, results of the feature component analysis indicated that the main source of PAHs in PM10 may be traffic emissions and coal combustion. In summary, the proposed method provided a new and rapid analysis method for the accurate determination and source apportionment of PAHs in atmospheric aerosols.
研究领域:
环境科学
·
分析化学
·
公共卫生
✓ 已验证
产品关联
DOI
高影响因子
Water
·
2025
·Vol. 17
·期 8
·1223
·
IF 3
Xiaoying Pan,Lifeng Wu,Dong Wang
Perfluorinated and polyfluoroalkyl substances (PFASs), as an emerging type of pollutant, always pollute water quality to a certain extent. The occurrence, source, and risk of PFASs in the Fuyang River are not well understood. For the first time, the state of PFASs in the upper Fuyang River (Handan section) was investigated. The results showed that there were 10 types of PFASs with concentrations higher than the limit of quantitation in the surface water of the Fuyang River. The surface waterρ(∑PFASs) ranges from 13.80 to 22.88ng·L−1. The highest quality score is perfluorooctane sulfonate (PFOS), which is 59.40%. PFASs are mainly composed of long-chain substances. PFASs generally show a trend of gradually increasing downstream. PFASs have the same source, mainly from industrial activities around rivers and rainfall inputs. Principal component analysis shows that PFASs mainly come from the leather and textile manufacturing industries, fluoropolymer production, and electroplating metal industries. The concentration of PFASs in the Fuyang River has not yet affected ecology and health.
研究领域:
环境科学
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公共卫生
✓ 已验证
产品关联
DOI
高影响因子
BUILDING AND ENVIRONMENT
·
2019
·
IF 4.82
Shen Yang,Xudong Yang,Dusan Licina
People spend a substantial amount of daily time in vehicle environments being exposed to variety of airborne chemicals. High concentrations of volatile organic compounds (VOCs) inside vehicle cabins have been of increasing concern owing to various health risks. Yet, there is a limited knowledge and data about VOC emissions from interior vehicular materials. In a controlled small-scale ventilated chamber, we quantified dynamic VOC emission characteristics for four commonly-used vehicular interior materials (leather coat of seats (LCS), dashboard (DB), pillar (PI) and ceiling (CE)) exposed to the two interior air temperatures (25 and 60 °C). The emission strengths of VOCs increased with temperature elevation by 3–36 times, but not linearly for every group of compounds. The level of individual VOC compounds emitted was a strong function of time, indicating the importance of a continuous sampling approach. Correlation analysis of individual VOCs revealed different emission mechanisms among the major compounds. The source apportionment results indicated that the LCS materials were associated with emissions of aromatics, carbonyls and other VOCs at 25 °C, while special attentions should be paid to the DB and the PI for their predominant contributions to extremely elevated level of aliphatic compounds at 60 °C. The results of this study are potentially useful for database of VOC emissions from vehicular materials, development of improved standard testing methods and for improved modeling of VOC emissions.
研究领域:
环境科学
·
公共卫生
✓ 已验证
产品关联
DOI
高影响因子
Toxics
·
2022
·Vol. 10
·期 10
·580
·
IF 4.472
Kai Xiao,Xiaoqing Yao,Xi Zhang,Ning Fu,Qiuhong Shi,Xiaorui Meng,Xuechang Ren
The sources of potentially toxic elements (PTEs) in road dust are complex and potentially harmful to humans, especially in industrial cities. Jiayuguan is the largest steel-producing city in Northwest China, and this study was the first to conduct a related study on PTEs in road dust in this city, including the pollution characteristics, source apportionment, and health risk assessment of PTEs in road dust. The results showed that the highest concentration of PTEs in the local road dust samples were Mn, Ba, Zn, and Cr. The enrichment factor (EF) of Se was the highest, and it was “Very high enrichment” in areas other than the background area, indicating that the local Se was more affected by human activities. The geoaccumulation index (Igeo) of Se was also the highest, and the pollution level was 5 in all areas except the background area, indicating that the local Se was more polluted and related to coal combustion. The sources of PTEs in local road dust samples mainly included geogenic-industrial sources, coal combustion, traffic sources, and oil combustion. For the non-carcinogenic risk, the hazard index (HI) of each element of children was higher than that of adults, and the sum of the HI of each element was greater than 1, indicating that there was a non-carcinogenic risk under the combined influence of multiple elements, which was especially obvious in industrial areas. For the carcinogenic risk, the cancer risk (CR) of Cr at a certain point in the industrial area exceeded 10−4, which was a carcinogenic risk, and the Cr in this area may be related to the topsoil of the local abandoned chromate plant.Keywords:Jiayuguan;road dust;potentially toxic elements;pollution characteristics;source apportionment;health risk assessment
研究领域:
环境科学
·
公共卫生
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
·
2021
·
IF 2.826
Xuan Luo,Xiang-Dong Qing,Xu-Chang Miao,Sen Xiang,Hong-Jun Chen,Xiao-Hua Zhang,Min He
In this study, PM10 samples at four locations of Loudi, China were collected from January 2017 to March 2017 and December 2017 to February 2018 at first. Then, a new analytical strategy of second-order calibration based on the alternating trilinear decomposition (ATLD) coupled with gas chromatography-mass spectrometry (GC-MS) was firstly developed for quantitative analysis of seven polycyclic aromatic hydrocarbons (PAHs) in these samples. This strategy is more sensitive and efficient than traditional chromatography not only, but also it can resolve the problems of baseline drift and peaks overlapping in chromatographic analysis. Without the need for intricate pretreatment process and any derivation reactions, useful qualitative and quantitative information of seven PAHs was quickly extracted from the GC-MS-Sample data array by replacing chemical or physical separation with mathematical separation. In validation samples, the average recoveries of seven PAHs ranged from (96.7 ± 4.8) % to (107.9 ± 4.2) %, and the root-mean-square errors of prediction (RMSEPs) were within the range of 0.03–0.35 μg mL−1. The highest concentrations of individual PAHs in these samples were for phenanthrene (1.34 μg mL−1 in monitoring station), acenaphthylene (0.79 μg mL−1 in municipal government) and chrysene (0.53 μg mL−1 in monitoring station). Identified by component analysis, coal combustion and vehicle exhaust were the most possible sources of Loudi, China. These results demonstrated that the proposed method is characterised as a more precise, simple and promising analytical strategy to identify and quantify PAHs in actual aerosol.
研究领域:
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Sciences
·
2024
·
IF 5.9
Haibao Zhu,Yuanchen Chen,Zheng Ruan,Han Wang,Danhua Liu,Meirong Zhao
Ubiquitous contamination of the soil environment with volatile organic compounds (VOCs) has raised considerable concerns. However, there is still limited comprehensive surveying of soil VOCs on a national scale. Herein, 65 species of VOCs were simultaneously determined in surface soil samples collected from 63 chemical industrial parks (CIPs) across China. The results showed that the total VOC concentrations ranged from 7.15 to 1842 ng/g with a mean concentration of 326 ng/g (median: 179 ng/g). Benzene homologs and halogenated hydrocarbons were identified as the dominant contaminant groups. Positive correlations between many VOC species indicated that these compounds probably originated from similar sources. Spatially, the hotspots of VOC pollution were located in eastern and southern China. Soils with higher clay content and a higher fraction of total organic carbon (TOC) content were significantly associated with higher soil VOC concentrations. Precipitation reduces the levels of highly water-soluble substances in surface soils. Both positive matrix factorization (PMF) and principal component analysis-multiple linear regression (PCA-MLR) identified a high proportion of industrial sources (PMF: 59.2 % and PCA-MLR: 66.5 %) and traffic emission sources (PMF: 32.3 % and PCA-MLR: 33.5 %). PMF, which had a higher R 2 value (0.7892) than PCA-MLR (0.7683), was the preferred model for quantitative source analysis of soil VOCs. The health risk assessment indicated that the non-carcinogenic and carcinogenic risks of VOCs were at acceptable levels. Overall, this study provides valuable data on the occurrence of VOCs in soil from Chinese CIPs, which is essential for a comprehensive understanding of their environmental behavior.
研究领域:
环境科学
·
公共卫生
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
·
2024
·Vol. 47
·期 2
·1-21
·
IF 3.2
Yang Yan,Guo Xiaoke,Wang Jing,Li Jing,Li Song,Qiu Jinliang,Wang Haijun,Zhang Hui,Yin Hongling
Per- and polyfluoroalkyl substances (PFAS) have been detected in lake ecosystems globally, even in remote areas at high altitudes. Compared to plain lakes with short water change cycles and significant human influence, plateau lakes are primarily tectonic closed or semi-closed lakes with steep terrain. Their long water change cycles lead to an obvious cumulative effect on pollutants. In this study, a targeted screening method for 74 PFAS in aquatic environment was established. The contamination characteristics of PFAS in surface water samples (0.5 m below the water surface) and bottom samples (0.5 m above the lake bottom) of plateau Lake Yangzonghai were studied and compared to a reference site in Dianchi Lake which has been severely affected by anthropogenic sources. Results showed that 32 PFAS were detected in Lake Yangzonghai with the total concentration (∑ 32 PFAS) ranging from 14.95 to 26.42 ng L −1 . Among the 27 PFAS with available standards for accurate quantification, 22 PFAS were detected, with the concentration of ∑ 22 PFAS ranging from 13.27 to 20.17 ng L −1 . Significant differences ( p < 0.05) in PFAS concentrations were observed between surface water (22.12 ng L −1 ) and bottom water (18.18 ng L −1 ), demonstrating a stratification phenomenon. The spatial differences in PFAS concentrations in surface water were minimal, indicating that the surface water was uniformly mixed with limited local disturbance from human pollution. The main PFAS monomers were perfluorooctanoic acid (PFOA), 8-3 fluorotelomer carboxylic acid (8-3 FTCA), perfluoroheptanoic acid (PFHpA) and 2H-perfluoro-2-decenoic acid (8-2 FTUCA), while PFBA was not detected. This distribution remarkably differed from many other plain lakes and the reference lake. Source apportionment analysis showed that PFAS primarily originated from atmospheric transport and precursor degradation. The results provide a background pollution level of PFAS in the plateau lake near the city and will benefit for formulating control policies.
研究领域:
环境科学
·
生态学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL RESEARCH
·
2025
·
IF 7.7
Li-Xin Kou,Xiao-Yu Zhang,Zi-Cen Zuo,Na Liu,Zhen He,Gui-Peng Yang
Polyhalogenated carbazoles (PHCZs), an emerging class of halogenated organic pollutants, have been widely detected in various environmental media, including sediments, soil, air, and organisms. The East China Sea (ECS) is a vital region for marine and fishery resource development in China, yet research on the pollution levels and sources of PHCZs in its sediments remains limited. This study reports the occurrence of seven PHCZs in the surface sediments of the ECS, with detection rates exceeding 90%. The concentrations of Σ 7 PHCZs ranged from 3.5 to 27 ng/g, with an average of 9.9 ng/g. The predominant congeners were 1368-BCZ and 3-ICZ. The sources of PHCZs included a non-specific source transported via terrestrial runoff (39%), industrial wastewater discharge (35%), and optoelectronic material pollution (26%), as identified by the positive matrix factorization model. The ecological risk assessment, based on TEQ, indicated a range of 0.18–5.0 pg TEQ/g across the study area. These findings highlight the potential ecological concerns associated with PHCZs in the ECS and emphasize the need for enhanced environmental monitoring and source mitigation efforts to reduce their potential environmental impacts.
研究领域:
环境科学
·
海洋学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）