|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | 海水中痕量DMS和DMSP分析方法的研究显示文摘二甲基硫(DMS)是海洋排放的占优势地位的生源硫气体,其在大气中的氧化产物能够影响到环境酸化和世界的气候变化。因此,测定海水中的DMS对于准确地评价其在全球硫循环所起的重要作用具有重要意义。本文中作者研究了海水中DMS的痕量分析技术。海水中的DMS首先采用气提-冷阱捕集技术进行预浓缩,然后用带有火焰光度检测器的气相色谱(GC-FPD)进行分析。该方法的精确度在5%以内,平均回收率为85.6%(82.8%—90.5%),最小检出限为0.15ngS。β-二甲基巯基丙酸内盐(DMSP)的分析是通过将其在碱性溶液中分解成DMS来进行。作者采用此方法实测了黄海中DMS和DMSP的含量,获得了理想的结果。 | 杨桂朋 康志强 景伟文 陆小兰 高先池 | 2007 | 海洋与湖沼2007，38，4： | 34 |
| 2 | Sources and characteristics of fine particles over the Yellow Sea and Bohai Sea using online single particle aerosol mass spectrometer显示文摘Marine aerosols over the East China Seas are heavily polluted by continental sources. During the Chinese Comprehensive Ocean Experiment in November 2012, size and mass spectra of individual atmospheric particles in the size range from 0.2 to 2.0 μm were measured on board by a single particle aerosol mass spectrometer(SPAMS). The average hourly particle number(PN)was around 4560 ± 3240 in the South Yellow Sea(SYS), 2900 ± 3970 in the North Yellow Sea(NYS), and 1700 ± 2220 in the Bohai Sea(BS). PN in NYS and BS varied greatly over 3 orders of magnitude, while that in SYS varied slightly. The size distributions were fitted with two log-normal modes. Accumulation mode dominated in NYS and BS, especially during episodic periods. Coarse mode particles played an important role in SYS. Particles were classified using an adaptive resonance theory based neural network algorithm(ART-2a). Six particle types were identified with secondary-containing, aged sea-salt, soot-like, biomass burning, fresh sea-salt,and lead-containing particles accounting for 32%, 21%, 18%, 16%, 4%, and 3% of total PN,respectively. Aerosols in BS were relatively enriched in particles from anthropogenic sources compared to SYS, probably due to emissions from more developed upwind regions and indicating stronger influence of continental outflow on marine environment. Variation of source types depended mainly on origins of transported air masses. This study examined rapid changes in PN, size distribution and source types of fine particles in marine atmospheres. It also demonstrated the effectiveness of high-time-resolution source apportionment by ART-2a. | Huaiyu Fu Mei Zheng Caiqing Yan Xiaoying Li Huiwang Gao Xiaohong Yao Zhigang Guo Yuanhang Zhang | 2015 | Journal of Environmental Sciences2015，27，3： | 12 |
| 3 | 夏季中国东海生源有机硫化物的分布及其影响因素研究显示文摘二甲基硫(DMS)、二甲巯基丙酸内盐(DMSP)和二甲亚砜(DMSO)是海洋中最重要的3种生源有机硫化物.本文系统研究了2013年6月中国东海表层海水中3种硫化物的水平分布规律及其影响因素,并估算了DMS海-气通量.结果表明,表层海水DMS、溶解态DMSPd、颗粒态DMSPp、溶解态DMSOd和颗粒态DMSOp浓度平均值分别为4.70、7.00、27.83、13.66和10.78 nmol·L-1.DMS、DMSP和DMSO与叶绿素a(Chl-a)水平分布规律相似,均呈现近岸高、远海低的趋势.相关性分析结果表明,DMS、DMSPd和DMSOp浓度与Chl-a浓度均有显著的相关性,说明浮游植物生物量是影响东海有机硫化物生产分布的重要因素.此外,研究发现DMS与DMSPd、DMSOd与DMS间分别存在一定的相关性,表明表层海水中DMS主要来源于DMSPd的微生物降解,而DMSOd的主要来源是DMS的氧化过程.此外,夏季东海DMS海-气通量在0.62~33.98μmol·(m2·d)-1之间,平均值为9.71μmol·(m2·d)-1. | 李江萍 张洪海 杨桂朋 | 2015 | 环境科学2015，36，1： | 9 |
| 4 | 黄河三角洲潮滩湿地系统二甲基硫排放通量的时空变化显示文摘为了探讨黄河三角洲潮滩湿地系统二甲基硫(dimethylsulfide,DMS)排放的时空变化和主要影响因子,利用静态箱法监测了黄河三角洲高潮滩、中潮滩和低潮滩DMS通量和环境因子的年际变化.结果表明,从全年来看,黄河三角洲潮滩湿地系统是DMS的释放源,高潮滩、中潮滩和低潮滩释放DMS的通量范围依次为0.043~0.59μg·m^(-2)·h^(-1)、0.18~1.90μg·m^(-2)·h^(-1)和0.88~5.80μg·m^(-2)·h^(-1),均值依次为0.33μg·m^(-2)·h^(-1)、0.95μg·m^(-2)·h^(-1)和2.18μg·m^(-2)·h^(-1).黄河三角洲潮滩湿地DMS的释放通量具有明显的时空变化,其排放主要集中在植物生长季.潮滩湿地间DMS的排放通量差异显著(p<0.05),表现为低潮滩>中潮滩>高潮滩,这种时空变化可能与季节、植被、环境因子、土壤基质等的空间变化有关.DMS的排放受到多种因素的影响,在高潮滩,0 cm地温对DMS排放通量影响显著;在低潮滩,0~5 cm土壤体积含水量对DMS排放通量影响显著,而在中潮滩则没有发现显著的影响因子.该研究成果可以为进一步研究黄河三角洲湿地硫循环及其对大气环境的影响提供基础数据. | 李新华 孙志高 孙文广 朱振林 | 2015 | 环境科学学报2015，35，12： | 7 |
| 5 | 冬季黄渤海DMS、DMSP和CH_4的分布及影响因素显示文摘于2017年12月~2018年1月现场测定了黄、渤海表层海水中二甲基硫(DMS)、二甲巯基丙酸内盐(DMSP)以及溶解甲烷(CH_4)的含量,对DMS、DMSP及CH_4的浓度分布和相互关系进行了研究.通过培养实验探究了DMSP降解对DMS和CH_4生成的影响,并估算了DMS及CH_4的海-气通量.结果表明,表层海水中DMS、DMSPd、DMSPp及CH_4的平均浓度分别为(1.39±1.21),(2.87±1.54),(5.59±4.64),(6.91±2.77)nmol/L.DMS、DMSP与Chl-a水平分布基本一致,均呈现近岸高、远海低的趋势.垂直分布上,DMS、DMSP浓度最大值均出现在浅水层,而CH_4浓度则随深度的增加而增大,至底层达到最大值.相关性分析表明,DMS、DMSPp与Chl-a存在显著的正相关关系,CH_4与DMSPd、DMSPp浓度均存在一定的正相关性(P<0.05).培养实验结果表明,海水中本底DMSPd的浓度越高,DMS的生产速率越大.冬季黄、渤海DMS和CH_4海-气通量的平均值分别为(2.73±3.18),(8.14±7.68)μmol/(m^2·d),表明冬季黄、渤海是大气中DMS、CH_4重要的源. | 谭丹丹 张洪海 翟星 高旭旭 杨桂朋 | 2019 | 中国环境科学2019，39，5： | 5 |
| 6 | Spatial distribution of dimethylsulfide and dimethyl-sulfoniopropionate in the Yellow Sea and Bohai Sea during summer显示文摘Abstrac t The distributions of dimethylsulfide(DMS) and its precursor dimethylsulfoniopropionate(DMSP) in surface water of the Yellow Sea and the Bohai Sea were studied during June 2011. The mean concentrations and ranges of DMS, dissolved DMSP(DMSPd), and particulate DMSP(DMSPp) in surface waters were 6.85(1.60–12.36), 7.25(2.28–19.05) and 61.87(6.28–224.01) nmol/L, respectively. There were strong correlations between DMSPp and chlorophyll a in the Bohai Sea and the North Yellow Sea, respectively, and concentrations of DMS and DMSP were high, with a relatively high proportion of dinoflagellates, in the region of the South Yellow Sea Cold Water Mass. Results show that phytoplankton biomass and species composition were important factors that controlled the distribution of DMS and DMSP. Complex environmental factors, including nutrients, transparency, and terrestrial runoff, might also influence the variability in DMS and DMSP. Biological production and consumption rates of DMS in the Bohai Sea were higher than those in the Yellow Sea. DMS production rates were closely correlated with DMSPd concentrations. DMS and DMSP exhibited obvious diel variations, with high concentrations occurring in the late afternoon(16:00–19:00) and low concentrations occurring during the night, implying that the intensity of solar radiation had a significant influence on these variations. Size distributions of chlorophyll a and DMSPp were also investigated and large nanoplankton(5–20 μm), mainly diatoms, contributed significantly to chlorophyll a and DMSPp at most stations. The average sea-to-air flux of DMS in the study area was estimated to be 11.07 μmol/(m2 ·d) during the summer. | 杨剑 杨桂朋 张洪海 张升辉 | 2015 | Chinese Journal of Oceanology and Limnology2015，33，4： | 4 |
| 7 | Temporal variations of dimethylsulfide and dimethylsulfoniopropionate in the southern Yellow Sea in spring and autumn显示文摘Temporal distributions of dimethylsulfide(DMS) and dimethylsulfoniopropionate(DMSP) were studied in the southern Yellow Sea(SYS) during April and September 2010. The mean concentrations(range) of DMS, dissolved and particulate DMSP(DMSPd and DMSPp) in the surface waters in spring are 1.69(0.48–4.92), 3.18(0.68–6.75)and 15.81(2.82–52.33) nmol/L, respectively, and those in autumn are 2.80(1.33–5.10), 5.45(2.19–11.30) and 30.63(6.24–137.87) nmol/L. On the whole, the distributions of DMS and DMSP in spring are completely different from those in autumn. In the central part of the SYS, the concentrations of DMS and DMSP in spring are obviously higher than those in autumn, but the opposite situation is found on the south of 34°N, which can be attributed to the differences in nutrients and phytoplankton biomass and composition between spring and autumn. Besides,the seasonal variations of water column stability and the Changjiang diluted water also have significant impact on the distributions of DMS and DMSP in spring and autumn on the south of 34°N. DMS and DMSPp concentrations coincide well with chlorophyll a(Chl a) levels in the spring cruise, suggesting that phytoplankton biomass may play an important role in controlling the distributions of DMS and DMSPp in the study area. Annual DMS emission rates range from 0.015 to 0.033 Tg/a(calculated by S), respectively, using the equations of Liss and Merlivat(1986) and Wanninkhof(1992). This result implies a significant relative contribution of the SYS to the global oceanic DMS fluxes. | YANG Jian YANG Guipeng ZHANG Honghai ZHANG Shenghui | 2016 | Acta Oceanologica Sinica2016，35，2： | 3 |
| 8 | 冬季黄海生源硫的分布、海-气通量及其对气溶胶中非海盐硫酸盐的贡献显示文摘2009年12月对黄海进行了大面调查,研究了冬季黄海二甲基硫(DMS)和二甲巯基丙酸内盐(DMSP)的浓度分布、DMS海-气通量及其影响因素。调查结果表明,DMS、溶解态DMSP(DMSPd)和颗粒态DMSP(DMSPp)的浓度分别为0.95(0.07~3.30)、1.18(0.22~3.54)和5.01(1.63~12.33)nmol·L^-1。总体上DMS和DMSP的水平分布与叶绿素a(Chl-a)相类似,呈现近岸高、远海低的趋势。35°N断面的垂直调查结果显示,在水深小于50m的水体中Chl-a、DMS和DMSP浓度较高且分布相对均匀。相关性分析发现,仅DMSPp与Chl-a之间存在一定的相关性。利用Nightingale公式(N2000)估算了冬季黄海DMS的海-气通量,其平均值为2.16μmol·m^-2·d^-1。此外,根据大气气溶胶中甲基磺酸盐(MSA)和非海盐硫酸盐(nss-SO2-4)的浓度和比例,估算出生源硫释放对气溶胶中nss-SO2-4的贡献比例仅为2.85%,表明冬季黄海大气nss-SO2-4主要受人为活动排放控制。 | 杨剑 张洪海 杨桂朋 | 2015 | 中国海洋大学学报(自然科学版)2015，45，7： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员