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| 1 | Aerosol light absorption in a coastal city in Southeast China:Temporal variations and implications for brown carbon显示文摘Light-absorbing carbonaceous aerosols including black carbon(BC) and brown carbon(BrC)play significant roles in atmospheric radiative properties. One-year measurements of aerosol light absorption at multi-wavelength were continuously conducted in Xiamen,southeast of China in 2014 to determine the light absorption properties including absorption coefficients(σabs) and absorption ?ngstr?m exponent(AAE) in the coastal city.Light absorptions of BC and BrC with their contributions to total light absorption were further quantified. Mean σabsat 370 nm and 880 nm were 56.6 ± 34.3 and 16.5 ± 11.2 Mm-1,respectively. σabspresented a double-peaks diurnal pattern with the maximum in the morning and the minimum in the afternoon. σabswas low in warm seasons and high in cold seasons. AAE ranged from 0.26 to 2.58 with the annual mean of 1.46, implying that both fossil fuel combustion and biomass burning influenced aerosol optical properties. σabsof BrC at 370 nm was 24.0 ± 5.7 Mm-1, contributing 42% to the total absorption. The highest AAE(1.52 ± 0.02) and largest BrC contributions(47% ± 4%) in winter suggested the significant influence of biomass burning on aerosol light absorption. Long-distance air masses passing through North China Plain and the Yangtze River Delta led to high AAE and BrC contributions. High AAE value of 1.46 in July indicated that long-range transport of the air pollutants from intense biomass burning in Southeast Asia would affect aerosol light absorption in Southeast China. The study will improve the understanding of light absorption properties of aerosols and the optical impacts of BrC in China. | Yuqing Qiu Xin Wu Yanru Zhang Lingling Xu Youwei Hong Jinsheng Chen Xiaoqiu Chen Junjun Deng | 2019 | Journal of Environmental Sciences2019，31，6： | 5 |
| 2 | Ferromagnetic-like behavior of ultrafine NiO nanocrystallites显示文摘 | Hong Bi Shandong Li Yuchuan Zhang Youwei Du | 2003 | Journal of Magnetism and Magnetic Materials2003，，3： | 1 |
| 3 | Prepara- tion, characterization and enhanced visible-light photo- catalytic activities of BiPO4/BiVO4 eomposites显示文摘 | Siyuan Wu Hong Zheng Youwei Lian | 2013 | Ma- terials Research Bulletin2013，48，8： | 1 |
| 4 | Accumulation of polycyclic aromatic hydrocarbons from contaminated soil by Kandelia candel显示文摘The purpose of this study was to investigate the accumulation behavior of two typical PAHs,phenanthrene(PHE) and fluoranthene(FLA),uptaken by the mangrove Kandelia candel in various treated sandy soils.The experiment lasted for three months.Soil and plant samples were collected after 3,6,9 and 13 weeks of the incubation and the levels of PAHs were analyzed using a GC/MS(HP6890-5975B).The results showed that the root accumulations of PHE and FLA were elevated with the increase of the PAH concentrations in the soil.With prolonged exposure time,PHE and FLA concentrations of the roots increased significantly in comparison with the control.PHE and FLA concentrations of root after 13 weeks of treatment ranged from 0.28 to 4.36 μg·g-1 and 0.79 to 35.76 μg·g-1,respectively.The calculated mean values of the root concentration factors were 0.58 for PHE and 0.71 for FLA.This indicated that root accumulation of FLA was greater than PHE,which would result from the higher octanol-water partition coefficient(Kow) of FLA.These results underline the ability of mangroves to remove PAHs from contaminated marine substrates and hence their potential use in bioremediation and the removal of PAHs from the marine food chain. | HONG Youwei YUAN Dongxing LIAO Dan LIU Baomin | 2009 | Acta Oceanologica Sinica2009，28，6： | 1 |
| 5 | Chemical composition and antifungal activity of essential oil from Cicuta virosa L. var. latisecta Celak显示文摘 | Jun Tian Xiaoquan Ban Hong Zeng Jingsheng He Bo Huang Youwei Wang | 2011 | International Journal of Food Microbiology2011，，2： | 1 |
| 6 | Chemical composition and antifungal activity of essential oil from Cicuta virosa L. var. latisecta Celak显示文摘 | Jun Tian Xiaoquan Ban Hong Zeng Jingsheng He Bo Huang Youwei Wang | 2011 | International Journal of Food Microbiology2011，，2： | 1 |
| 7 | The control of Aspergillus flavus with Cinnamomum jensenianum Hand.-Mazz essential oil and its potential use as a food preservative显示文摘 | Jun Tian Bo Huang Xiuli Luo Hong Zeng Xiaoquan Ban Jingsheng He Youwei Wang | 2011 | Food Chemistry2011，，3： | 1 |
| 8 | Sources appointment and health risks of PM_(2.5)-bound trace elements in a coastal city of southeastern China显示文摘To gain a comprehensive understanding of sources and health risks of trace elements in an area of China with high population densities and low PM_(2.5)concentrations,15 trace elements(Al,K,Ca,Ti,V,Cr,Mn,Fe,Ni,Cu,Zn,As,Sn,Ba,Pb)in PM_(2.5)were monitored from December 2020 to November 2021 in a representative city,Xiamen.The concentrations of trace elements in Xiamen displayed an obvious seasonal variation and were dominated by K,Fe,Al,Ca and Zn.Based on Positive Matrix Factorization analysis,source appointment revealed that the major sources of trace elements in Xiamen were traffic,dust,biomass and firework combustion,industrial manufacture and shipping emission.According to health risk assessment combined with the source appointment results,it indicated that the average noncarcinogenic risk was below the threshold and cancer risk of four hazardous metals(Cr,Ni,As,Pb)exceeded the threshold(10^(-6)).Traffic-related source had almost half amount of contribution to the health risk induced by PM_(2.5)-bound trace elements.During the dust transport period or Spring Festival period,the health risks exceeded an acceptable threshold even an order of magnitude higher,suggesting that the serious health risks still existed in low PM_(2.5)environment at certain times.Health risk assessment reminded that the health risk reduction in PM_(2.5)at southeastern China should prioritize traffic-related hazardous trace elements and highlighted the importance of controlling vehicles emissions in the future. | Ziyi Lin Xiaolong Fan Gaojie Chen Youwei Hong Mengren Li Lingling Xu Baoye Hu Chen Yang Yanting Chen Zhiqian Shao Jinsheng Chen | 2024 | Journal of Environmental Sciences2024，，4： | 0 |
| 9 | Both APRI and FIB‐4 could effectively evaluate liver fibrosis in liver transplantation recipients显示文摘To the Editor,Liver transplantation(LT)is the only curative therapy for patients with end‐stage liver disease.1 Due to the high incidence of metabolic syndrome after LT,nonalcoholic fatty liver disease(NAFLD)has gradually become an essential cause of post‐LT fibrosis.2 Liver fibrosis can progress to liver cirrhosis and carries the risk of developing hepatocellular carcinoma(HCC),which adversely affects long‐term survival after LT.3,4 Early detection and active intervention for liver fibrosis after LT are crucial in LT recipients.Previous studies have confirmed that transient elastography(TE)could accurately detect liver fibrosis in LT recipients by comparing TE with liver biopsy. | Xiao‐han Fang Man Xie Youwei Zhao Qun Zhang Qiu‐ju Tian Liu Zhao Hong Liu Wei Rao Xinjuan Kong | 2022 | Portal Hypertension & Cirrhosis2022，1，3： | 0 |
| 10 | Pharmaceutical compounds in aquatic environment in China: locally screening and environmental risk assessment显示文摘一个环境风险评价为在中国的水的环境在场的药品的混合物被执行。混合物的预言的环境集中(PEC ) 根据欧洲药评估机构(EMEA ) 指南被计算。使用一个很保守的评价因素(AF ) 损害的可得到的 ecotoxicological 数据被采用计算预言的 noeffect 集中(PNEC ) 。屏蔽原则和风险评价基于风险商(RQ ) ,它源于 PEC 和相关 PNEC 价值。PEC 结果显示了那除了 sulfadimethoxine 和 levocarnitine 的所有混合物,应该在 EMEA 执行阶段 II 风险评价指南。RQ 价值建议超过 36 药品可以是对水的环境的强加的健康威胁;特别包括 amoxicillin, sulfasalazine, trimethoprim,土霉素和抗生素的一种的治疗学的班高显示出的抗菌素 RQ 值。有高 RQ 价值(RQ1 ) 的这些物质在中国的水的环境为控制被认为是 toppriority 药品。然而,有低风险商的抗菌素物质(RQ < 1 ) ,应该被它的潜在地导致的抵抗在未来在低集中下面重估。 | Yongshan CHEN Xiuping XI Gang YU Qiming CAO Bin WANG Franfois VINCE Youwei HONG | 2015 | Frontiers of Environmental Science & Engineering2015，9，3： | 0 |
| 11 | Atmospheric oxidation capacity and O_(3) formation in a coastal city of southeast China:Results from simulation based on four-season observation显示文摘The pollution of atmospheric ozone in China shows an obvious upward trend in the past decade.However,the studies on the atmospheric oxidation capacity and O_(3)formation in four seasons in the southeastern coastal region of China with the rapid urbanization remain limited.Here,a four-season field observation was carried out in a coastal city of southeast China,using an observation-based model combining with the Master Chemical Mechanism,to explore the atmospheric oxidation capacity(AOC),radical chemistry,O_(3)formation pathways and sensitivity.The results showed that the average net O_(3)production rate(14.55 ppbv/hr)in summer was the strongest,but the average O_(3)concentrations in autumn was higher.The AOC and ROx levels presented an obvious seasonal pattern with the maximum value in summer,while the OH reactivity in winter was the highest with an average value of 22.75 sec^(-1).The OH reactivity was dominated by oxygenated VOCs(OVOCs)(30.6%-42.8%),CO(23.2%-26.8%),NO_(2)(13.6%-22.0%),and alkenes(8.4%-12.5%)in different seasons.HONO photolysis dominated OH primary source on daytime in winter,while in other seasons,HONO photolysis in the morning and ozone photolysis in the afternoon contributed mostly.Sensitivity analysis indicated that O_(3)production was controlled by VOCs in spring,autumn and winter,but a VOC-limited and NOx-limited regime in summer,and alkene and aromatic species were the major controlling factors to O_(3)formation.Overall,the study characterized the atmospheric oxidation capacity and elucidated the controlling factors for O_(3)production in the coastal area with the rapid urbanization in China. | Gaojie Chen Taotao Liu Jinsheng Chen Lingling Xu Baoye Hu Chen Yang Xiaolong Fan Mengren Li Youwei Hong Xiaoting Ji Jinfang Chen Fuwang Zhang | 2024 | Journal of Environmental Sciences2024，，2： | 0 |
| 12 | Chemical characterization and source apportionment of atmospheric submicron particles on the western coast of Taiwan Strait, China显示文摘Taiwan Strait is a special channel for subtropical East Asian Monsoon and its western coast is an important economic zone in China. In this study, a suburban site in the city of Xiamen on the western coast of Taiwan Strait was selected for fine aerosol study to improve the understanding of air pollution sources in this region. An Aerodyne high-resolution time-of-flight aerosol mass spectrometer(HR-To F-AMS) and an Aethalometer were deployed to measure fine aerosol composition with a time resolution of 5 min from May 1to 18, 2015. The average mass concentration of PM1 was 46.2 ± 26.3 μg/m^3 for the entire campaign. Organics(28.3%), sulfate(24.9%), and nitrate(20.6%) were the major components in the fine particles, followed by ammonium, black carbon(BC), and chloride. Evolution of nitrate concentration and size distribution indicated that local NOx emissions played a key role in high fine particle pollution in Xiamen. In addition, organic nitrate was found to account for 9.0%–13.8% of the total measured nitrate. Positive Matrix Factorization(PMF)conducted with high-resolution organic mass spectra dataset differentiated the organic aerosol into three components, including a hydrocarbon-like organic aerosol(HOA) and two oxygenated organic aerosols(SV-OOA and LV-OOA), which on average accounted for 27.6%,28.8%, and 43.6% of the total organic mass, respectively. The relationship between the mass concentration of submicron particle species and wind further confirmed that all major fine particle species were influenced by both strong local emissions in the southeastern area of Xiamen and regional transport through the Taiwan Strait. | Liming Cao Qiao Zhu Xiaofeng Huang Junjun Deng Jinsheng Chen Youwei Hong Lingling Xu Lingyan He | 2017 | Journal of Environmental Sciences2017，29，2： | 0 |
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