Antibiotics-Basel
·
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
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
·
公共卫生
✓ 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
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Zhen Zhang,You Wang,Xueqi Li,Xinran Wu,Yunyi Hu,Rong An,Ling Xu,Xiangdong Qing
In the contribution, a novel chemometric coupling technique combined with high-performance liquid chromatography with diode array detector (HPLC-DAD) was developed for the rapid quantification and source apportionment of eight monoaromatic hydrocarbons (MACHs) in soil samples. The strategy was built on the three-dimensional calibration based on alternating trilinear decomposition coupling with the unsupervised classification using t-distributed stochastic neighbor embedding (named ATLD-t-SNE). Firstly, a validation set and a spiked soil set were used to investigate the quantitative performance of the developed method. The obtained average recoveries of eight MACHs in soil samples were between (95.0 ± 4.4)% and (111.9 ± 3.3)%, and the limits of detection ranged from 0.0041μg mL −1 to 1.85 μg mL −1 , which were better than the results of parallel factor analysis-alternating least squares (PARAFAC-ALS). Subsequently, the proposed approach was applied to analyze actual soil samples collected from tea plantations (7 samples) and industrial areas (60 samples), revealing the presence of ethylbenzene (EBZ) and (1,3,5)-trimethylbenzene (MTY) in both types of soil samples, could the absence of other six MACHs. Finally, ATLD-t-SNE was utilized to classify these soil samples and a comparison between the new strategy and ATLD combined with feature component analysis as well as principal component analysis (called ATLD-FCA and ATLD-PCA, respectively) was made. The finding indicated that ATLD-t-SNE provided better clustering than other two methods, indicating different sources of organic pollution of MACHs in soil samples.
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
危险品化学品经营许可证（带存储）