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Journal of Environmental Sciences 2004年第1期16卷 56-60页

作者： HUANGZhi ZHOUWen YUYa-juan ZHANGAi-qian HANShuo-kui WANGLian-sheng StateKeyLaboratoryofPollutionControlandSourcesReuse SchooloftheEnvironmentNanjingUniversityNanjing210093China

Enrichment of volatile organic compounds(VOC) and semi-volatility organic compounds(SVOC) in surface microlayer(SM) of three drinking water sources were studied. The enrichment factor( EF s) were 0.67 to 13.37 and 0.16 to 136, respectively. The results showed some VOC and most SVOC could enrich in SM. Some EF s of SVOC was quite high. Suspension and temperature could affect EF s of SVOC, slim wind and water movement do not destroy enrichment of organic in SM.

关键词： surface microlayer enrichment GC-MS SPE

Comparison of the water quality of the surface microlayer and subsurface water in the Guangzhou segment of the Pearl River, China

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Journal of Geographical Sciences 2014年第3期24卷 475-491页

作者： LIU Qing HU Xiaojuan JIANG Jiangluan ZHANG Junyi WU Zhihui YANG Yufeng Institute of Hydrobiology Jinan University Key Laboratory of Aquatic Eutrophication and Control of Harmful Algal Blooms of Guangdong Higher Education Institutes Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering Ministry of Education Guangzhou 510632 China Shenzhen Academy of Environmental Sciences Shenzhen 518002 Guangdong China Key Laboratory of South China Sea Fishery Resources Exploitation and Utilization of Ministry of Agriculture Key Laboratory of Fishery Ecology and Environment of Guangdong Province South China Sea Fisheries Institute Chinese Academy of Fishery Sciences Guangzhou 510300 China Beijing Normal University-Hong Kong Baptist University Untied International College Zhuhai 519000 Guangdong China

The water quality in the surface microlayer （SML） and subsurface water （SSW） in the Guangzhou segment of Pearl River, a eutrophic urban river section in China, were ana- lyzed. The spatial and temporal dynamics of nutrient concentrations, heavy metals and bac- teria were examined from two sampling sites in monthly samples throughout 2010. The mean concentrations of total nitrogen, ammonia, nitrate and nitrite were higher than 7.0 mg/L, 3.1 mg/L, 1.1 mg/L and 0.3 mg/L, while total phosphorus and orthophosphate were 0.5 mg/L and 0.1 mg/L, respectively. These results indicated that the water quality was rich in minerals and eutrophic. The mean concentrations of Mn and Fe were higher than 0.013 mg/L; and Ni, Cr and Pb were higher than 0.001 mg/L. The mean concentrations were in the order of Mn 〉Fe 〉 Ni 〉 Pb 〉 Cr. The concentrations of heavy metals in the Guangzhou segment were lower than the limit of the surface water quality standards in China and the World Health Organization （WHO）, but higher than the median values in the world＇s freshwater. The density of bacteria ranged from 3.30×10^5 to 5.23×10^6 cells/mL, and the amount of cultivable heterotrophic bac-teria ranged from 1.30×10^3 to 1.89×10^6 cfu/mL. Fecal coliform levels were beyond the V class of China water quality standard. The SML was enriched in nutrients, heavy metals and bac- teria, with the maximum enrichment factor of 3.84 for nutrients, 8.00 for heavy metals, and 3.04 for bacteria, suggesting that the water quality of the SML of the Guangzhou segment of the Pearl River was more serious than in the SSW.

关键词： surface microlayer nutrients heavy metal microbes Guangzhou segment Pearl River

Bacterial diversity in the sea surface microlayer of the Northern Yellow Sea of China

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Marine Science Bulletin 2017年第2期19卷 1-19页

作者： MING Hong-xia FAN Jing-feng WANG Xiao-hui LI Hong-bo ZAN Shuai-jun National Marine Environmental Monitoring Center Dalian 116023 Liaoning province China Dalian Ocean University Dalian 116023 Liaoning province China

The surface microlayer(SML)is a thin biogenic film found between the marine environment and troposphere that comprises a unique marine ecosystem with its own physicochemical and microbiological *** this study,we compared the bacterial cell abundance and community structure of the SML and subsurface waters(0.50m depth)using traditional culture and flow cytometry ***,53strains were screened and *** addition,DNA was extracted from the SML and corresponding subsurface water and used for bacterial community analysis by denaturing gradient gel electrophoresis(DGGE).The results revealed that the SML had a distinct microbial community structure from the corresponding subsurface *** is the first compresensively detailed molecular biological analysis of the bacterioneuston in the Yellow Sea of China.

关键词： surface microlayer bacterial diversity denaturing gradient gel electrophoresis

Phylotype resolved spatial variation and association patterns of planktonic Thaumarchaeota in eastern Chinese marginal seas

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Marine Life Science & Technology 2023年第2期5卷 257-270页

作者： Jiwen Liu Fuyan Huang Jiao Liu Xiaoyue Liu Ruiyun Lin Xiaosong Zhong Brian Austin Xiao-Hua Zhang Frontiers Science Center for Deep Ocean Multispheres and Earth System and College of Marine Life SciencesOcean University of ChinaQingdao 266100China Laboratory for Marine Ecology and Environmental Science Laoshan LaboratoryQingdao 266237China Institute of Evolution and Marine Biodiversity Ocean University of ChinaQingdao 266003China Key Laboratory of Marine Chemistry Theory and Technology Ministry of EducationQingdao 266100China Institute of Aquaculture University of StirlingStirling FK94LAScotlandUK

The majority of marine ammonia oxidizers belong to Thaumarchaeota,a phylum of Archaea,which is distributed throughout the water *** surface waters contain distinct thaumarchaeotal phylotypes compared to the deeper ocean,but spatial dynamics of the surface-associated lineages are largely *** study of 120 seawater samples from the eastern Chinese marginal seas identifed contrasting distribution and association patterns among thaumarchaeotal phylotypes across diferent ***,Nitrosopumilus-like and Nitrosopelagicus-like phylotypes dominated the surface water(3 m)of the Yellow Sea(YS)and East China Sea(ECS),respectively,along with increased abundance of total free-living Thaumarchaeota in *** compositional changes were observed in the surface *** spatial heterogeneity of particle-attached Thaumarchaeota was less clear in surface microlayers than in surface ***,the Nitrosopelagicus-like phylotype increased in abundance from surface to 90 m in ECS,which led to an increase in the proportion of Thaumarchaeota relative to total *** occurred mainly in the free-living *** results indicate a clear size-fractionated niche partitioning,which is more pronounced at lower depths than in the surface water/surface *** addition,associations of Thaumarchaeota with other microbial taxa varied between phylotypes and size *** results show that a phylotype-resolved and size-fractionated spatial heterogeneity of the thaumarchaeotal community is present in surface oceanic waters and a vertical variation of the Nitrosopelagicus-like phylotype is present in shallow shelf waters.

关键词： Thaumarchaeota Phylotype Association pattern Spatial variation surface microlayer Chinese marginal seas

Interaction Between DEHP and Particulate in a Eutrophic Lake

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Transactions of Tianjin University 2004年第3期10卷 167-170页

作者：迟杰刘华季民 School of Environment Science and Engineering Tianjin University Tianjin 300072 China

Characteristics of interaction between di-2-ethylhexyl phthalate(DEHP) and particulate in a eutrophic lake were studied in this paper. DEHP concentrations ranged from 89.9 to 247 μg/L with an average value of 146 μg/L in subsurface water (SSW) samples, and from 82.0 to 390 μg/L with an average value of 211 μg/L in water surface microlayer (SM) samples. The results indicate that there was only a weak correlation between the DEHP concentrations and suspended particulate material(SPM) concentrations in both SSW and SM, while the significant correlation between DEHP concentrations and chlorophyll a concentrations was found, which suggestes that DEHP was principally bound to phytoplankton in the eutrophic lake. Correlation between DEHP concentrations and total phosphor (TP) concentrations was also found in this *** factors (EF) of DEHP in SM were in the range of 0.85 to 2.12 with an average value of 1.35. DEHP EFs were significantly related to the enrichment of chlorophyll a in SM. The results suggest that the enrichment of DEHP in SM of this eutrophic lake was mainly due to DEHP accumulation in phytoplankton and was controlled by distribution of phytoplankton between SM and SSW.

关键词： eutrophication di-2-ethylhexyl phthalate surface microlayer small lake phytoplankton enrichment

Multilayer distribution of carbon dioxide system in surface water of the Yellow Sea in spring

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Chinese Journal of Oceanology and Limnology 2007年第1期25卷 1-15页

作者：宫海东张正斌张闯刘莲生邢磊 Institute of Marine Chemistry Ocean University of China Qingdao 266003 China

surface water can be divided into three layers from top downward： surface microlayer （SML, thickness≤50 μm）, subsurface layer （SSL, ≈25 cm） and surface layer （SL, l-5m）, among which the SML plays an important role on sea-air interaction because of its unique physical-chemical property. Carbon dioxide system including DIC （dissolved inorganic carbon）, Alk （alkalinity）, pH and pCO：（partial pressure of CO2） in multilayered waters of the Yellow Sea was studied for the first time in March and May 2005. The results show that： DIC and Alk are obviously enriched in SML. The contents ofDIC, Alk and pCO2 become lower in turn from SML, SSL to SL, higher in March and lower in May, whereas for pH it was opposite. The relationship between DIC and Alk is clearly positive, but negative between pH and pCO2. Meanwhile, pCO2 and temperature/salinity is also in positive relation, pCO2 decreases with latitude increase. DIC and Alk show a similar variation trend with the maximum at 02：00-03：00, but pH and pCO2 show an opposite pattern. In addition, the distribution patterns are similar to each other in the three layers. The Yellow Sea is shown to be a sink of atmospheric CO2 in spring by two methods：（1） comparing pCO2 in seawater and atmosphere; （2） turning direction of ＂pH-depth＂ curve. Calculation on the base of pCO2 data in SML in four models shows that carbon flux in spring in the area was about -6.96×10^6 t C.

关键词： the Yellow Sea carbon dioxide (CO2) system multiplayer surface microlayer carbon flux