工业工程最新文献

{"title":"[Spatial-temporal Evolution and Driving Force Analysis of Habitat Quality in Inner Mongolia from 2000 to 2022].","authors":"Bo-Wen Ye, Biao Sun, Yun-Liang Zhao, Jia-Qi Pang, Yu-Ying Guo, Wei-Ze Yao","doi":"10.13227/j.hjkx.202407134","DOIUrl":"https://doi.org/10.13227/j.hjkx.202407134","url":null,"abstract":"<p><p>The ecological environment of Inner Mongolia plays a significant role in the construction ecological community of northern China. Utilizing Google earth engine （GEE） and MODIS data， this study developed the annual remote sensing ecological index （RSEI） long time-series for Inner Mongolia from 2000 to 2022. Combined with the Theil-sen & Mann-Kendall trend test and Hurst and Moran's <i>I</i>， the spatial and temporal evolution pattern of habitat quality in Inner Mongolia was comprehensively analyzed， and the influencing factors of RSEI were quantified from the perspective of spatial differentiation by using a geographical detector and a multi-scale geographically weighted regression model （MGWR）. The results indicated： ① There was a slight improvement in habitat quality in Inner Mongolia over the past 23 years， although the overall quality remains low. The annual growth rate was 0.0006 a^-1 （<i>P</i>&gt;0.05）， showing a nonsignificant upward trend and spatially decreasing from northeast to southwest. ② Improved habitat quality areas over the past 23 years made up 62.90% of the region， with a future trend likely dominated by continued degradation. Although 9.16% of the area is expected to see improvement. ③ The global Moran's <i>I</i> exceeded 0.9240， signifying a high positive spatial correlation in RSEI distribution. The eastern region predominantly exhibited high-high clustering， whereas the western region showed low-low clustering. ④ The habitat quality of Inner Mongolia was mostly affected by temperature， precipitation， evaporation， elevation， and land use， and the interaction between them had stronger explanatory power than a single factor. ⑤ The explanatory power of various driving factors significantly varied across regions， with each playing a dominant role in the spatial differentiation of RSEI. Therefore， zoning management is essential for achieving sustainable habitat quality.</p>","PeriodicalId":35937,"journal":{"name":"环境科学","volume":"46 7","pages":"4473-4484"},"PeriodicalIF":0.0,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144660534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Spatiotemporal Characteristics and Configuration Paths of the Coupling Coordinated Development between Digital Economy and Green Logistics under the Background of \"Dual Carbon\"].","authors":"Min-Jie Li, Yi-Hui Chen, Tong-Yu Wu","doi":"10.13227/j.hjkx.202405286","DOIUrl":"https://doi.org/10.13227/j.hjkx.202405286","url":null,"abstract":"<p><p>The coupling coordinated development between digital economy and green logistics is of great significance in promoting the integration of Digital China and Beautiful China and realizing the goal of \"Double Carbon.\" For the purpose of clarifying the mechanism of coupling coordinated development between the digital economy and green logistics， this study applied the vertical and horizontal scatter degree method， modified coupling coordination degree model， cold-hot spot analysis， and dynamic aggregated fuzzy set qualitative comparative analysis （fsQCA） method to reveal the spatiotemporal characteristics and configuration paths of the coupling coordinated development between China's digital economy and green logistics during the period from 2013 to 2021. The findings showed that： ① In terms of temporal change， the development level of China's digital economy and green logistics fluctuated in an upward trend. The coupling coordination degree between the two also had a growth trend， experienced from the verge of dysfunction to barely coordination by stage spanning， but the overall coupling coordination degree was not high. ② In terms of spatial patterns， the coupling coordination degree between digital economy and green logistics showed a distribution pattern of \"high in the east and low in the central and western regions.\" The eastern region was already in a state of primary coordination， while most provinces in the central and western regions were still in a state of dysfunction characterized by a type of lagging digital economy. ③ In terms of spatial correlation， the spatial positive correlation of the coupling coordination degree between digital economy and green logistics was significant. Jiangsu， Shanghai， Zhejiang， and Fujian formed a hotspot area， and the change was relatively stable， while the coldspot area expanded from Inner Mongolia to the northeast towards Heilongjiang and Jilin， gradually covering Shanxi to the south. ④ Three types of configuration models drove the high coupling coordinated development between digital economy and green logistics， which were technology-led， technology-talent synergy， and technology-structure optimization. A comparative analysis of the study period revealed that technological conditions had become more important over time， whereas human capital could form a substitute for technological conditions in regions with a higher degree of advanced industrial structure.</p>","PeriodicalId":35937,"journal":{"name":"环境科学","volume":"46 7","pages":"4159-4174"},"PeriodicalIF":0.0,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144660556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Adsorption Mechanism of Phosphate on Layered Double Hydroxide-loaded Biochar and DFT Study].","authors":"Feng-Feng Ma, Hong-Bing Kang, Hao Zhao, Xu-Dong Zheng, Jian Zhang, Qing Li, Ya-Xian Jiao","doi":"10.13227/j.hjkx.202406282","DOIUrl":"https://doi.org/10.13227/j.hjkx.202406282","url":null,"abstract":"<p><p>This study utilized layered double hydroxides （LDHs） loaded with potato straw biochar （SBC） to prepare a composite material （LDHs@SBC）. The adsorption performance of LDHs@SBC for phosphate was investigated， and the adsorption mechanism was analyzed at the molecular level using density functional theory （DFT）. The results showed that the adsorption kinetics of phosphate by LDHs@SBC could be well-fitted by a pseudo-second-order kinetic model （<i>R</i>²=0.983）， with the main adsorption process being chemical adsorption. Thermodynamic analysis indicated that the adsorption process of phosphate by LDHs@SBC was a spontaneous exothermic reaction. DFT calculations revealed that the adsorption energy of phosphate by LDHs@SBC was -5.34 eV， confirming that the adsorption process was chemical adsorption and a spontaneous exothermic reaction. The adsorption of phosphate by LDHs@SBC was due to the hybridization of P-<i>p/s</i>， O-<i>p</i>， and M-<i>p/s</i> orbitals forming a coordination bond P-O-M， along with significant electron transfer and orbital contribution. The pH of the solution affected the speciation of phosphate and the charge distribution of LDHs@SBC. The adsorption of phosphate by LDHs@SBC reached its maximum through the formation of ordinary hydrogen bonds （OHB） and charge-assisted hydrogen bonds （CAHB）. The main mechanisms for phosphate adsorption by LDHs@SBC included electrostatic attraction， precipitation， ligand exchange， and charge-assisted hydrogen bonding. LDHs@SBC exhibited strong adsorption performance for phosphate and good reusability， making it a promising， efficient， and renewable adsorbent material for the treatment of phosphorus-containing wastewater.</p>","PeriodicalId":35937,"journal":{"name":"环境科学","volume":"46 7","pages":"4360-4369"},"PeriodicalIF":0.0,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144660570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Emission Inventory of Industrial Sources in Beijing-Tianjin-Hebei and Surrounding Areas Based on Multi-source Environmental Management Data Fusion].","authors":"Jing-Chao Ma, Jing-Nan Hu, Jin-Hong Du, Jing-Hua Ma, Hao Zhang, Yi Tang, Li Yang, Peng Xu, Xiao Liu","doi":"10.13227/j.hjkx.202406067","DOIUrl":"https://doi.org/10.13227/j.hjkx.202406067","url":null,"abstract":"<p><p>The current data sources used for establishing emission inventories are relatively homogenous and do not meet the requirement of real-time and accurate environmental management. Multi-source environmental management data could reflect enterprises' detailed information and provide support for emission inventories. To assess the current situation of air pollutants and CO₂ emissions from industrial sources in Beijing-Tianjin-Hebei and its surrounding areas in 2020， this study integrates emergency emission reduction lists with pollution discharge permit data and establishes a high spatio-temporal resolution industrial emission inventory using a combination of \"bottom-up\" and \"top-down\" approach. The results showed that the SO₂，NO<i>_x</i>，VOCs，PM₁₀，PM_2.5， and CO₂ emissions from industrial sources in Beijing-Tianjin-Hebei and its surrounding areas in 2020 were 48.72×10⁴， 60.33×10⁴， 108.95×10⁴， 58.82×10⁴， 38.75×10⁴， and 140 873.59×10⁴ t， respectively. Industrial boilers and iron and steel and cement industries accounted for the largest proportion in addition to VOCs， with a total proportion between 51% and 82%. The refining and petrochemical industry accounted for the largest proportion of VOCs （54.1%）. To investigate the impact of the COVID-19 lockdown on industrial source emissions， we quantified the changes in daily emissions of each pollutant and CO₂ during the Spring Festival of 2020. The emissions of air pollutants and CO₂ decreased by 7%-16% and recovered to the pre-holiday level after the holiday， indicating that the industrial emissions sources were less affected by the COVID-19 lockdown. This was mainly because most industrial sources belonged to non-interruptible industries. The study results help to grasp the current situation of industrial source emissions in Beijing-Tianjin-Hebei and the surrounding areas and provide scientific support for the near real-time and refined management of air pollution.</p>","PeriodicalId":35937,"journal":{"name":"环境科学","volume":"46 7","pages":"4011-4023"},"PeriodicalIF":0.0,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144660583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Remote Sensing Assessment of Ecosystem Health and Its Key Driving Factors： A Case Study of the Urban Agglomeration in the Middle Reaches of the Yangtze River].","authors":"Jin Guo, Xiao-Jian Wei, Fu-Qing Zhang, Jin Cai, Yu-Bo Ding","doi":"10.13227/j.hjkx.202406285","DOIUrl":"https://doi.org/10.13227/j.hjkx.202406285","url":null,"abstract":"<p><p>The Yangtze River Middle Reaches Urban Agglomeration， is a crucial city cluster in central China and plays an important role in promoting urban biodiversity conservation and sustainable development through its ecosystem health. Based on multisource remote sensing data， a comprehensive \"Vigor-Organization-Resilience\" model was used to systematically evaluate urban ecosystem health. Further， the geographic convergence cross-mapping （GCCM） model was employed to identify key driving factors of ecosystem health and reveal the causal relationships between ecosystem health and its drivers. The study showed that： ① Over 20 years， the ecosystem health level of the Yangtze River Middle Reaches Urban Agglomeration improved， increasing from 0.784 in 2010 to 0.801 in 2020. The overall ecosystem health was better in the northeastern and western regions compared to that in the central and southern regions， with notable differentiation. ② Based on the GCCM model， human activities and ecosystem health had a relatively stable mutual influence， while the interaction between the natural environment and ecosystem health was unstable. For human landscape indicators， GDP and POP had consistent interaction directions with EH. For natural landscape indicators， TA， MAP， HLI， NDVI， and NPP had inconsistent interaction directions with EH. ③ The GCCM model ranked the driving forces as follows： normalized vegetation index &gt; GDP &gt; nighttime light index &gt; annual precipitation &gt; average annual temperature &gt; population density &gt; net primary productivity. The normalized vegetation index was the most important driving factor， with GDP， nighttime light index， annual precipitation， and average annual temperature being the main driving factors， while population density and net primary productivity contributed less to ecosystem health. This study analyzes the ecosystem functions and changes in the Yangtze River Middle Reaches Urban Agglomeration， providing a scientific basis for future ecosystem management， and has significant theoretical and practical implications for sustainable urban ecosystem health governance and preventive policy formulation.</p>","PeriodicalId":35937,"journal":{"name":"环境科学","volume":"46 7","pages":"4545-4557"},"PeriodicalIF":0.0,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144660601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Research Progress of In-situ Passivation Remediation Materials for Cadmium-contaminated Soil（Farmland）].","authors":"Yuan Xie, Chun Yang, Run-Feng Lu, Tian-Tian Yu","doi":"10.13227/j.hjkx.202404175","DOIUrl":"https://doi.org/10.13227/j.hjkx.202404175","url":null,"abstract":"<p><p>The proportion of soil pollution points exceeding the standard in China has reached 19.4%， and the proportion of cadmium exceeding the standard was the highest， reaching 7.0%. Once Cd was absorbed by crops and entered the human body， it could cause damage to the kidneys， bones， digestive system， etc. As the half-life of cadmium is 15 to 30a in humans， it severely jeopardize human health. The in-situ passivation remediation materials for cadmium-contaminated soil can effectively reduce the migration and bioavailability of cadmium and reduce the damage to crops caused by cadmium accumulation. It also has the advantages of simple operation， good stability， and fast passivation rate and does not affect agricultural production. For in-situ passivation remediation of Cd-contaminated soil， the mechanism and effect of different types of passivation materials were studied， the influencing factors and applicable conditions of passivation materials were analyzed， and five directions for the future development of passivation materials were put forward， as follows： ① conduct a stability study of the passivating agent and Cd after passivating； ② monitor and evaluate the effects of soil physicochemical properties， texture， and environmental quality and the growth， yield， and quality of crops after soil restoration by passivating agent application； ③ develop the corresponding passivating agent and formulate the corresponding standard according to the specific application environment； ④ research and apply the technology of reducing the total Cd in soil； and ⑤ accelerate the research of new materials in reducing costs and improving efficiency and accelerate the application of new materials. Through comprehensive analysis of cadmium-contaminated soil， the development direction and effective solution of cadmium-contaminated soil passivation materials were provided.</p>","PeriodicalId":35937,"journal":{"name":"环境科学","volume":"46 7","pages":"4657-4673"},"PeriodicalIF":0.0,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144660602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Analysis of the Spatiotemporal Distribution Characteristics and Influencing Factors of River Water Quality in Suzhou City].","authors":"Shi-Yu Xia, Wen Lü, Jin-Yan Yang, Cheng Yu","doi":"10.13227/j.hjkx.202406274","DOIUrl":"https://doi.org/10.13227/j.hjkx.202406274","url":null,"abstract":"<p><p>River ecosystems are dynamic， open， and continuous systems that provide rich material resources and important survival environments for humans. Analyzing the temporal and spatial trends of urban river water quality and the influencing factors is of great significance for taking targeted measures to improve water environmental quality and alleviate water resource shortages. In this study， Suzhou located in the hinterland of the Taihu Lake Basin was taken as the study area to explore the characteristics of urban river water quality change. Based on the water quality monitoring data from 2008 to 2021， the study used the comprehensive water quality index （WQI） and geographical detector to investigate the long-term spatiotemporal trends and influencing factors of river water quality. The results showed that the median annual WQI value of river water in Suzhou increased from 51.16 in 2008 to 71.17 in 2021， indicating a gradual improvement in water quality. The water quality has significantly improved since 2016， which can be mainly attributed to a series of water quality control projects and policies implemented in Suzhou. In terms of seasonal differences， the median WQI values in the wet season， dry season， and normal flow season were 57.89， 61.58， and 63.68， respectively， with water quality in the wet season mainly affected by non-point source pollution. The water quality in all districts of Suzhou had improved significantly from 2008 to 2021， with Zhangjiagang exhibiting the best water quality， where all monitoring points showed good water quality， and Gusu District had the lowest proportion of good water quality due to a high percentage of construction land and high population density. In 2008， temperature and GDP were the main influencing factors of river water quality. By 2021， the impact of temperature and GDP on river water quality had decreased， while the influence of population density and land use on water quality had increased. The interaction of any two influencing factors had a higher explanatory power in Suzhou River water quality than a single factor alone， indicating that the water quality was influenced by a variety of factors from both nature and human activities， with the impact of human factors gradually surpassing natural factors. Additionally， the impact of natural and human factors on water quality was greater in the dry season than in the wet season. This study can provide a scientific reference for accurately identifying water quality influencing factors and proposing precise pollution prevention and control measures for surface water bodies in Suzhou and similar regions.</p>","PeriodicalId":35937,"journal":{"name":"环境科学","volume":"46 7","pages":"4241-4250"},"PeriodicalIF":0.0,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144660508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Response of Soil Physical-chemical Traits and Bacterial Diversity to Utilization Modes and Slope Aspect in the Artificially Seeded Grasslands of the Muli Mining Area].","authors":"Yong Wu, You-Ming Qiao, Xi-Lai Li, Cheng-Yi Li, Hua-Fang Sun, Yi-Zhi Zhou, Guo-Rong Chen","doi":"10.13227/j.hjkx.202405154","DOIUrl":"https://doi.org/10.13227/j.hjkx.202405154","url":null,"abstract":"<p><p>To elucidate the response mechanisms of soil bacterial community structure and diversity to winter senescent grass utilization modes in artificially seeded grasslands in alpine mining areas， a study was conducted in the Muli mining area of Qinghai Province， where the senescent grass on the slopes of various aspects was utilized in different modes. The results showed that both winter mowing and grazing reduced soil moisture content in the artificial grasslands. Grazing significantly decreased soil pH on sunny slopes and increased available nitrogen， available phosphorus， and soil organic carbon content （<i>P</i>&lt;0.05）. Both grazing and mowing reduced the number of bacterial OTUs in the soil， with grazing significantly decreasing the Shannon index， Ace index， and Chao1 index of the soil bacterial community on sunny slopes （<i>P</i>&lt;0.05）. Compared to enclosure， grazing significantly reduced the relative abundance of Acidobacteriota on sunny slopes <i>（P</i>&lt;0.05） and significantly increased the relative abundance of Acidobacteriota on shady slopes （<i>P</i>&lt;0.05）. RDA analysis indicated that soil organic carbon was the main factor affecting the distribution of dominant bacterial phyla on sunny slopes of the alpine mining area， while available phosphorus was the main factor affecting the distribution of dominant bacterial phyla on shady slopes. Therefore， the winter utilization modes of the artificially seeded grasslands in the alpine mining areas significantly impacted the composition and diversity of soil bacterial communities across different slope aspects.</p>","PeriodicalId":35937,"journal":{"name":"环境科学","volume":"46 7","pages":"4710-4722"},"PeriodicalIF":0.0,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144660529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Source Apportionment and Pollution Characteristics of VOCs in Suqian Based on Industrial Source Spectrum].","authors":"Peng Sun, Yuan-Yuan Li, Sheng Zhong, Zheng Xu, Jian-Qiao Yu, Zhou-Yang Han, Jia-Lin Zhong","doi":"10.13227/j.hjkx.202407001","DOIUrl":"https://doi.org/10.13227/j.hjkx.202407001","url":null,"abstract":"<p><p>To characterize the volatile organic compounds （VOCs） and ozone （O₃） pollution in Suqian and quantitatively evaluate the contribution from industrial emissions， online measurements of 116 types of VOCs were carried out in Suqian in the summer of 2023 together with offline samples collected in a typical industrial area. Combined with other measurements and receptor models， the mass variations of VOCs， source apportionment， and O₃ pollution were investigated. The <i>φ</i>（TOVCs） during the monitoring period was 21.78×10^-9. The oxygen-containing VOC and alkane showed the highest contribution to the TVOCs. The total ozone formation potential （OFP） reached 109.67 μg·m^-3， with the highest contribution from acetaldehyde， toluene， and isoprene. Positive matrix factorization （PMF） agreed well with the ME-2 model based on measured industrial sources. However， the contribution of industrial sources to the TVOCs and the proportion of oxygen-containing VOCs resolved by PMF were relatively higher， indicating that fresh VOCs from the industrial sources were easy to age and increase while emitted into the atmosphere. During O₃ pollution days， industrial， transportation， and biological sources increased. Secondary sources exhibited the highest increase （51.7%） with their contribution to TVOCs up to 36.1% from 30.4% during non-polluted days. During the study period， both O₃ and PM_2.5 showed strong correlations with TVOCs. The mass concentrations of PM_2.5， especially the secondary components， increased significantly in O₃-polluted days， with secondary organic aerosols increasing the most （42.9%）. The results highlight the significant contributions of elevated VOC emissions to O₃ and PM_2.5 pollution driven by favorable meteorology conditions and its important role in the formation of atmospheric secondary processes.</p>","PeriodicalId":35937,"journal":{"name":"环境科学","volume":"46 7","pages":"4032-4041"},"PeriodicalIF":0.0,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144660532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Distribution Characteristics and Risk Assessment of Emerging Pollutants in a Secondary Tributary in Chongqing Section of the Upper Reaches of Yangtze River].","authors":"Sheng Yuan, Jiang-Yan Liu, Li Fan, Xue-Bing Wang, Yong Zhang, Deng-Hui Bin, Bin-Rong Yang, Si Wei, Qing-Wu Li","doi":"10.13227/j.hjkx.202406043","DOIUrl":"https://doi.org/10.13227/j.hjkx.202406043","url":null,"abstract":"<p><p>To provide a preliminary understanding of the characteristics and ecological risks of the levels of emerging pollutants in surface water， groundwater， and sediment in the tributaries of the Yangtze River Basin， this study uses ultra-high performance liquid chromatography tandem time-of-flight mass spectrometry. Approximately 44 emerging pollutants were detected from surface water， groundwater， and sediment samples collected from a watershed surrounding industrial parks. The distribution characteristics and risks of emerging pollutants were investigated. The results showed that emerging pollutants were found in the basin， with a detection rate of 10%-100%. The average contents of emerging pollutants in surface water， groundwater， and sediment were 37.85-117.57 ng·L^-1，17.28-101.09 ng·L^-1， and 1.57-14.68 ng·g^-1， respectively. Among them， sucralose （SCL） content was the highest in surface water， and L-pyrogulosine （L-PA） and monoethylhexyl phthalate （MEHP） were found in high concentrations in surface water， groundwater， and sediment. The occurrence of new pollutants in the basin was related to agricultural activities （such as pesticide spraying and non-standard management of pesticide packaging） and industrial production activities （such as food packaging， electronic equipment manufacturing industry， etc.）. According to the results of risk assessment， 4-hydroxybenzaldehyde （4-HB）， 1<i>H</i>-benzotriazole （BTA）， 2-hydroxyatrazine （HAT）， and MEHP had high or potential risks to algae， invertebrates （invert）， and fish. Additionally， algae were more sensitive to emerging pollutants than invert and fish. Five Class I priority characteristic pollutants were selected from surface water by the comprehensive evaluation method， namely MEHP， HAT， roxithromycin （ROM）， BTA， and dihydrotestosterone （DDET）. It is recommended to strengthen the monitoring and management of related compounds in the subsequent work and to pay attention to the source， environmental trend， and degradation and transformation mechanism of compounds.</p>","PeriodicalId":35937,"journal":{"name":"环境科学","volume":"46 7","pages":"4296-4309"},"PeriodicalIF":0.0,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144660578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}