杨桂朋
海洋化学
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- 姓名:杨桂朋
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学术头衔:
博士生导师
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学科领域:
海洋化学
- 研究兴趣:海洋化学
杨桂朋, 男,1963年11月生,海洋化学博士,北海道大学环境科学博士后。现任中国海洋大学化学化工学院院长、教授、博士生导师、加拿大Laval大学客座教授。工作十余年来,一直从事海洋化学的教学与科研工作。先后为化学化工学院本科生、研究生讲授有机化学(及实验)基础课、海洋物理化学(学位课)、海水分析化学(学位课)、化学海洋学(学位课)、海洋有机化学(学位课)、富集与分离化学、光化学等7门课程。已培养毕业硕士和博士近20人。现正指导15名博士和硕士研究生。在科研方面,先后主持、参加并完成了10余项国家级、省部级和国际合作科研项目,已在国内外重要学术刊物上发表论文90余篇(其中第一作者或撰写人66篇),出版专著1部,获国家发明专利1项。近年来在海洋界面化学、海洋光化学、海洋生源硫的生物地球化学、海洋环境化学等研究领域成绩突出,在国际知名刊物《Journal of Colloid and Interface Science》,《Deep?CSea Research》,《Journal of Marine Research》,《Continental Shelf Research》,《Marine Chemistry》,《Environmental Pollution》,《Colloids and Surfaces》,《Chemosphere》,《Journal of Photochemistry and Photobiology》,《科学通报》,《高等学校化学学报》等发表了20余篇SCI研究论文,取得了国际前沿水平的成果,特别是为国际IGBP谱写的全球DMS的分布图及其海―气通量的计算提供了具有重要价值的研究资料,数十次被引用,确立了中国在此研究领域的国际地位,在国际同行中有较大影响。曾获国家及省部级奖励多项。
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成果数
10
【期刊论文】Polycyclic aromatic hydrocarbons in the sediments of the South China Sea
杨桂朋, Gui-Peng Yang*
Environmental Pollution 108(2000)163-171,-0001,():
-1年11月30日
Sixteen sediment samples, collected from the South China Sea, were analyzed for 11 parent polycyclic aromatic hydrocarbons (PAHs) using gas chromatography and gas chromatography-mass spectrometry. Total concentrations of the 11 PAHs studied in the sediments ranged from 24.7 to 275.4 ng/g with a mean of 145.9 ng/g dry sediment. PAH concentrations displayed a consistent distribution trend with the sediment organic carbon content. The linear regression analysis showed that the total concentration of PAHs in the sediment was signi
Polycyclic aromatic hydrocarbons, Analysis, Distribution, Marine sediments, South China Sea
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【期刊论文】Distribution and cycling of dimethylsulfide in surface microlayer and subsurface seawater
杨桂朋, Gui-Peng Yang a, b, ), Shuichi Watanabe a, Shizuo Tsunogai a
Marine Chemistry 76(2001)137-153,-0001,():
-1年11月30日
Laboratory experiments, along with in situ investigation in Funka Bay, Japan, were conducted to determine the enrichment factor (EF). of dimethylsulfide (DMS). in the sea surface microlayer, as well as its the production and consumption rates. The EF of DMS in the microlayer was largely affected by various factors including sampling methods, sampling thickness, temperature, salinity, and DMS concentration in bulk water. In all cases but the sealed system, a part of DMS in the microlayer was always unavoidably lost during sampling. High temperature, great wind speed, and slow sampling would increase the extent of loss of DMS due to volatilization. In the field, the screen-collected samples usually exhibited greater microlayer enrichment for DMS than the plate-collected samples, showing that the screen sampler might be more effective for collecting the in situ microlayer DMS. The production and consumption rates of DMS in the surface microlayer were higher than those in the bulk water and these two rates were significantly correlated with the microlayer DMS concentrations. Moreover, the EF of DMS appeared to be related to the microlayer production rate of DMS, providing evidence supporting the observed DMS enrichment in the microlayer. The DMS production and consumption rates were not directly related to its concentrations in the bulk water, suggesting that the processes of production and consumption of DMS were very complex. In the surface microlayer, the biological turnover time of DMS varied from 0.4 to 1.9 days, with an average of 0.9 days, which was about 540-fold greater than the mean DMS sea–air turnover time (2.4 min). Thus, the biological process occurring within the microlayer can be neglected when we consider the sea–air exchange of DMS. Considering the microlayer production rate of DMS (an average of 9.7 nM day-1). to be too small to counteract the sea-to-air removal of DMS, the main source of DMS in the microlayer appears to be through vertical transport by turbulent diffusion from the underlying water.
Dimethylsulfide, Surface microlayer, Production and consumption rates, Sea-air flux, Funka Bay
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【期刊论文】Dimethylsulfide enrichment in the surface microlayer of the South China Sea
杨桂朋, Gui-Peng Yang*
Marine Chemistry 66 1999.215-224,-0001,():
-1年11月30日
A total of 22 sea surface microlayer samples collected from the Nansha Islands waters of the South China Sea were analyzed for dimethylsulfide DMS, chlorophyll a and nutrients including nitrate, phosphate and silicate. The DMS concentrations in surface microlayer samples ranged from 82 to 280 ng Srl with a mean of 145 ng Srl. A significant correlation was found between DMS and chlorophyll a data both in the surface microlayer as well as in the subsurface water. However, no correlation was observed between DMS and nutrient concentrations in the surface microlayer. The DMS concentrations were higher in all surface microlayer samples, compared with subsurface samples. The enrichment factor EF.of DMS in the surface microlayer varied from 1.21 to 3.08 with an average of 1.95. The EF of DMS was significantly correlated with that of chlorophyll a in the microlayer. The enrichment of DMS in the microlayer may be due to two factors, including the in situ production from phytoplankton and the transportation from the underlying seawater. The diel variations in DMS and chlorophyll a concentrations were studied at a fixed station. The highest concentrations of DMS in the surface microlayer and subsurface water were simultaneously observed in the late afternoon1800 h., while the highest levels of chlorophyll a were simultaneously found at night (0200 h).
dimethylsulfide, enrichment, surface microlayer, South China Sea
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【期刊论文】Photochemical degradation of dimethyl phthalate by Fenton reagent
杨桂朋, Xue-Kun Zhao, Gui-Peng Yang∗, Yu-Jue Wang, Xian-Chi Gao
Journal of Photochemistry and Photobiology A: Chemistry 161(2004)215-220,-0001,():
-1年11月30日
The photochemical degradation of dimethyl phthalate (DMP) in water was investigated under a variety of reaction conditions using hydrogen peroxide and Fe2+ (Fenton reagent) as oxidant. All experiments were conducted under artificial UV light (high pressure Hg lamp). Fenton reagent vigorously enhanced the photo-degradation rate of dimethyl phthalate. The experimental results showed that the optimum conditions were obtained at pH 3 for the UV/H2O2/Fe2+ system, with original H2O2 and Fe2+ concentrations of 5.00×10−4 and 1.67×10−4 M, respectively. The photo-degradation percentage of dimethyl phthalate within 120 min was as high as 81% under the optimum conditions. Therefore, the process of photo-Fenton was an effective treatment process under acidic condition and produced a higher photo-degradation percentage of dimethyl phthalate during a very short radiation time.
Dimethyl phthalate (, DMP), , Photo-degradation, Fenton reagent, Fe(, II), , H2O2, Hydroxyl radical
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【期刊论文】Biogeochemistry of dimethylsul de in the South China Sea
杨桂朋, by Gui-Peng Yang, Xin-Tong Liu, Li Li and Zheng-Bin Zhang
Journal of Marine Research, 57, 189-211, 1999,-0001,():
-1年11月30日
The distribution of dimethylsulfide (DMS) was studied in surface seawater and vertical profiles at nineteen stations in the Nansha Islands sea area of the South China Sea. The concentrationsof DMS in surface-layer (0-1m) seawater vary from 64 to 140 ng S/L with high values found in the productive regions, in agreement with the horizontal distribution of chlorophyll a. The vertical profiles of DMS show a single peak shape with maximum concentrations occurring at depths between 30-75m. The DMS concentrationsare correlatedwith chlorophylla levels both in the upper 20 m of seawater as well as in vertical profiles. A clear diel variation in DMS concentration is observed at the 50-m water layer at a fixed station with the highest DMS concentration found in the late afternoon.The DMS concentrations are associated with environmental factors such as seawater temperature, dissolved O2 and nutrient contents. Although DMS is correlated to chlorophyll a, the phytoplanktonspecies is a major factor responsiblefor the obviouslyhigher DMS concentrationthan expected from the phytoplankton biomass in this sea area. The sea-to-air flux of DMS from this sea area is calculated to be 7.6 μmol m-2 d-1.
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【期刊论文】Sorption behavior of 2,4-dichlorophenol on marine sediment
杨桂朋, Ping Wu, Gui-Peng Yang, ∗ and Xue-Kun Zhao
Journal of Colloid and Interface Science 265(2003)251-256,-0001,():
-1年11月30日
The sorption behavior of 2,4-dichlorophenol on marine sediments treated by different methods was investigated systematically. The sorption of 2,4-dichlorophenol on marine sediments was completed mainly via ion exchange and surface polar sorption. Both the Freundlich and Langmuir isotherms were fit for describing its sorption behavior. The sorption behavior of 2,4-dichlorophenol was affected by various factors including aqueous salinity and temperature. The sorption amount of 2,4-dichlorophenol on marine sediments increased with increasing ion strength, but decreased with increasing temperature.
2,, 4-Dichlorophenol, Marine sediment, Sorption isotherm, Freundlich, Langmuir
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【期刊论文】Study on Adsorption of Chlorobenzene on Marine Sediment
杨桂朋, Xue-Kun Zhao, Gui-Peng Yang, Ping Wu, and Nan-Hui Li
,-0001,():
-1年11月30日
The sorption behavior of chlorobenzene on marine sediments treated by different methods was investigated. Through experiments on three factors (temperature, sediment organic carbon content, and media) that might affect the sorption behavior of chlorobenzene, some important conclusions were obtained. Three hours were required for adsorption equilibrium of chlorobenzene on marine sediments. Adsorption of chlorobenzene was completed mainly via the surface and microporosity action of sediment. Either the Freundlich model or the Langmuir model was fit for describing adsorption behavior of chlorobenzene on marine sediments. Temperature did not have a great influence on adsorption behavior of chlorobenzene in seawater, but the saturate sorption amount decreased as the temperature became high. Through study on adsorption of chlorobenzene in different media, we found that the saturate sorption amount of chlorobenzene in natural seawater was several times greater than that in artificial seawater or deionized water.
chlorobenzene, marine sediment, adsorption isotherm, Langmuir, Freundlich.,
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【期刊论文】Adsorption of Dibenzothiophene on Marine Sediments Treated by a Sequential Procedure
杨桂朋, Gui-Peng Yang and Zheng-Bin Zhang
JOURNAL OF COLLOID AND INTERFACE SCIENCE 192, 398-407(1997),-0001,():
-1年11月30日
The sorption behavior of dibenzothiophene on marine sediments treated by a sequential procedure was investigated. Sorp-tion isotherms for dibenzothiophene on both no treatment and NaOAc-HOAc treatment sediments were all linear. Differences in Kp's between no-treatment and NaOAc-HOAc treatment sediments were mainly the result of differences in organic carbon content. Nonlinear adsorption isotherms of dibenzothiophene were observed on the sediments treated with H2O2 and could be described by the Freundlich equation. Nonlinear isotherms suggested that the sorption mechanism was a heterogenous adsorption process occurring on the surfaces of the residual organic matter and the bare inorganic minerals in the sediment. A linear correlation was found between the Freundlich constant K and the residual organic carbon. In addition, the sediment also had a significant effect on the residual organic carbon content and the Freundlich constant K. Differences in the isotherms of dibenzothiophene between the H2O2 treatment sediments and the no or NaOAc-HOAc treatment sediments indicated that the sorption was strongly influenced by the change in composition as well as by the percentage of organic matter in the sediments.
dibenzothiophene, adsorption, marine sediments, seawater.,
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【期刊论文】Spatial distributions of dimethylsulfide in the South China Sea
杨桂朋, Gui-Peng Yang*
Deep-Sea Research I 47(2000)177-192,-0001,():
-1年11月30日
The concentration of dimethylsulfide (DMS) and supporting parameters were determined in surface seawater and vertical profiles at 26 stations in the South China Sea. The concentrations of DMS in surface seawater ranged from 61 to 148 ng S/l, with a mean of 82 ng S/l. High concentrations of DMS were found in the productive regions. The vertical profiles of DMSwere characterized by a maximum at depths typically between 20 and 75 m. The concentrations of DMS were correlated with the levels of chlorophyll a both in the surface seawater and in the vertical distribution. The concentrations of DMS were higher than expected for this chlorophyllpoor tropical sea, as indicated by markedly high DMS (ng S/l)/chlorophyll a (lg/l) ratios ranging from 315 to 3524 with a mean of 1768 for all the surface seawater samples. DMS concentration was significantly correlated with seawater temperature and dissolved oxygen, but it showed an inverse relationship to nutrients (including nitrate, phosphate and silicate). On the basis of sea surface concentrations of DMS and gas exchange calculations, the mean flux of DMS from the South China Sea to the atmosphere was estimated to be 5.5 lmol m-2 d-1.
Dimethylsulfide, Spatial distributions, Sea-to-air flux, South China Sea
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【期刊论文】Distribution of dibenzothiophene in the sediments of the South China Sea1
杨桂朋, Gui-Peng Yanga*, Xiao-Lan Liu a, Jian-Wu Zhangb
Environmental Pollution 101(1998)405-414,-0001,():
-1年11月30日
Sediment samples from 22 different sampling sites in the South China Sea were analyzed for dibenzothiophene using capillary gas chromatography with sulfur special flame photometric detector. Dibenzothiophene was found in all of the sediments investigated. Its concentrations ranged from 11 to 66 ng/g dry sediment. Dibenzothiophene content was higher nearshore relative o shore sediments, which was consistent with the distribution trend of the sediment organic carbon observed in the area. Linear regression analyses showed the concentration of dibenzothiophene were markedly correlated to the organic carbon and clay contents of the sediments, suggesting that the clay and organic carbon contents are two prime factors controlling the sediment dibenzothiophene levels. Probable source pathways of dibenzothiophene in this sea sediments, including terrestrial runo, prude oil pollution and the input of airborne particulates formed from combustion processes, are also briefly discussed.
Dibenzothiophene, Analysis, Distribution, Marine sediments, South China Sea
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