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Organophosphate esters in water,suspended particulate matter(SPM)and sediments of the Minjiang River,China

Chinese Chemical Letters 2021年第9期32卷 2812-2818页

作者： Hongling Yin Qin Liu Xu Deng Xiaowen Liu Shuhong Fang Yuanming Xiong Jiaojiao Song College of Resources and Environment Chengdu University of Information TechnologyChengdu 610025China

As organic pollutants of emerging concern,organophosphate esters(OPEs)have shown toxicity to organisms after entering the water ***,research on OPEs in freshwater in Southwest China is very *** levels,distribution and partitioning behavior of OPEs in the Minjiang River and their influencing factors is still *** this study,six OPEs,tri-n-butyl phosphate(Tn BP),tri(2-chloroethyl)-phosphate(TCEP),trichloropropyl phosphate(TCPP),triphenyl phosphate(TPh P),tributoxyethyl phosphate(TBEP),and tris(2-ethylhexyl)-phosphate(TEHP),were determined in surface water,suspended particle matter(SPM)and sediments of the Minjiang *** results showed that the average concentrations of∑_(6)OPEs in surface water,SPM and sediments of the Minjiang River were 199.32±124.95 ng/L,38463.79±45641.89 ng/g dry weight(dw)and 76.45±28.00 ng/g dw,*** concentrations of OPEs were detected in SPM samples,indicating that more attention should be paid to pollution in *** is worth noting that the variation trend of OPEs in SPM was almost opposite to that in water but basically similar to that in *** proportions of alkyl OPEs in∑_(6)OPEs increased from surface water to SPM and *** OPEs were the main pollutants in SPM(10.44%–80.88%of∑_(6)OPEs,mean of 54.52%)and sediments(59.08%–81.30%of∑_(6)OPEs,mean of 68.91%),whereas chlorinated OPEs were the most abundant components in surface water(43.16%–75.99%ofδ∑_(6)OPEs,mean of 55.50%).The water-sediment partition coefficient(logKOC)of OPEs was 4.97–7.58,while the water-SPM partition coefficient was 6.71–*** significant correlations were found between log KOW and *** was not the main factor affecting the distribution of OPEs in the Minjiang River,China.

关键词： Organophosphate esters suspended particulate matter Partition coefficient The Minjiang River

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The increased storage of suspended particulate matter in the upper water of the tropical Western Pacific during the 2015/2016 super El Nino event

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Journal of Oceanology and Limnology 2021年第5期39卷 1675-1689页

作者： Wei GAO Zhenyan WANG Xuegang LI Haijun HUANG CAS Key Laboratory of Marine Geology and Environment Institute of OceanologyChinese Academy of SciencesQingdao 266071China Laboratory for Marine Mineral Resources Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China University of Chinese Academy of Sciences Beijing 100049China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China CAS Key Laboratory of Marine Ecology and Environmental Sciences Institute of OceanologyChinese Academy of SciencesQingdao 266071China

The climate variability induced by the El Nino-Southern Oscillation(ENSO)cycle drives significant changes in the physical state of the tropical Western Pacific,which has important impacts on the upper ocean carbon *** 2015-2016,a super El Nino event occurred in the equatorial *** particulate matter(SPM)data and related environmental observations in the tropical Western Pacific were obtained during two cruses in Dec.2014 and 2015,which coincided with the early and peak stages of this super El Nino *** with the marine environments in the tropical Western Pacific in Dec.2014,an obviously enhanced upwelling occurred in the Mindanao Dome region;the nitrate concentration in the euphotic zone almo st tripled;and the size,mass concentration,and volume concentration of SPM obviously increased in *** enhanced upwelling in the Mindanao Dome region carried cold but eutrophic water upward from the deep ocean to shallow depths,even into the euphotic zone,which disrupted the previously N-limited conditions and induced a remarkable increase in phytoplankton blooms in the euphotic *** se results reveal the mechanism of how nutrient-limited ecosystems in the tropical Western Pacific respond to super El Nino *** the context of the ENSO cycle,if predicted changes in biogenic particles occur,the proportion of carbon storage in the tropical Western Pacific is estimated to be increased by more than 52%,ultimately affecting the regional and possibly even global carbon *** paper highlights the prospect for long-term prediction of the impact of a super El Nino event on the global carbon cycle and has profound implications for understanding El Nino events.

关键词： suspended particulate matter field observations tropical Western Pacific 2015/2016 super E1 Nino event ocean carbon cycle

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Spatial Variation and Risk Assessment of Arsenic and Heavy Metals in Surface Water and suspended particulate matter in Tail Reaches of the Yellow River, China

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Chinese Geographical Science 2021年第1期31卷 181-196页

作者： SUN Zhigao LI Jing TIAN Liping CEHN Bingbing HU Xingyun Key Laboratory of Humid Subtropical Eco-geographical Process(Fujian Normal University) Ministry of EducationFuzhou 350007China Institute of Geography Fujian Normal UniversityFuzhou 350007China Fujian Provincial Key Laboratory for Subtropical Resources and Environment Fujian Normal UniversityFuzhou 350007China

To determine the pollution levels and potential toxic risks of arsenic(As) and heavy metals(Cr, Ni, Cu, Zn, Pb and Cd) in water and suspended particulate matter(SPM) in tail reaches(including freshwater reach and low-salinity reach) of the Yellow River as the Flow-Sediment Regulation Project(FSRP) has been carried out for approximately 15 yr, the surface water and SPM were sampled at pre-flood(April) and post-flood seasons(October). Results showed that similar changes of As and metal levels in water and SPM were observed along the tail reaches at pre-flood or post-flood season. Compared to pre-flood season, the levels of As, Cu, Cr and Ni in freshwater reach and the concentrations of Cr and Ni in low-salinity reach rose greatly at post-flood season. The levels of As and metals in SPM of freshwater reach or low-salinity reach at pre-flood season were significantly higher than those at post-flood season(P < 0.01).The pollutions of As and metals in surface water of tail reaches at pre-flood or post-flood season were not serious. The SPM in freshwater reach at pre-flood season were polluted by Cd, As, Cr, Cu and Ni while those in low-salinity reach were polluted by Cd and Cr. The SPM in freshwater reach at post-flood season were polluted by Cd and Pb while those in low-salinity reach were polluted by Cd and *** was identified as heavy metal of primary concern at both pre-flood and post-flood seasons. Combined with the existed data reported in present research, this study found that the toxic risk of As and metals in SPM of tail reaches at pre-flood season was higher than that at post-flood season, implying that the implementation of FSRP during flooding season, to a great extent, reduced the toxic risk of these elements. With the long-term implementation of FSRP, the pollution levels of As and metals(particularly for Cd) in SPM of tail reaches might be elevated and the potential toxic risk primarily produced by Cr, Ni and As might be increased if effective measures we

关键词： arsenic and heavy metals surface water suspended particulate matter tail reaches Yellow River

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Correlation Study Between suspended particulate matter and DOAS Data

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Advances in Atmospheric Sciences 2006年第3期23卷 461-467页

作者：司福祺刘建国谢品华张玉钧刘文清 Hiroaki KUZE Nofel LAGROSAS Nobuo TAKEUCHI Key Laboratory of Environmental Optics & Technology Center for Environmental Remote Sensing

Continuous data of aerosol optical thickness monitored using differential optical absorption spectroscopy （DOAS） are correlated with the concentration of ground-measured suspended particulate matter （SPM）. A high correlation is found between the DOAS and the ground SPM data, making it possible to calculate the mass extinction efficiency of the aerosols in the atmosphere. It is found that the value of mean mass extinction efficiency （MEE） varies over a range of 2.6-13.7 m^2 g^-1, with smaller and larger values occurring for size distributions dominated by coarse and fine particles, respectively.

关键词： Aerosol differential optical absorption spectroscopy suspended particulate matter mass extinction efficiency

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The distribution and characteristics of suspended particulate matter in the Chukchi Sea

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Advances in Polar Science 2014年第3期25卷 155-163页

作者： WANG Weiguo FANG Jianyong CHEN Lili WU Risheng YU Xingguang Third Institute of Oceanography SOA

Samples taken from the Chukchi Sea （CS） during the 4th Chinese National Arctic Research Expedition, 2010, were analyzed to determine the content and composition of suspended particulate matter （SPM） to improve our understanding of the distribution, sources and control factors of the SPM there. The results show that the SPM in the water column is highest in the middle and near the bottom in the south and central-north CS, followed by that off the Alaskan coast and in Barrow Canyon. The SPM content is lowest in the central CS. Scanning electron microscope （SEM） analysis shows that the SPM in the south and central-north CS is composed mainly of diatoms, but the dominant species in those two areas are different. The SPM off the Alaskan coast and in Barrow Canyon is composed mainly of terrigenous material with few bio-skeletal clasts. The distribution of temperature and salinity and the correlation between diatom species in SPM indicate that the diatom dominant SPM in the south CS is from the Pacific Ocean via the Bering Strait in summer. The diatom dominant SPM in the central-north CS is also from Pacific water, which reaches the CS in winter. The SPM in the middle and near the bottom of the water column off the Alaskan coast and in Barrow Canyon is from Alaskan coastal water and terrigenous material transported by rivers in Alaska.

关键词： suspended particulate matter content distribution origin Chukchi Sea

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Comparison of components and distribution of heavy metals in sediments, suspended particulate matter and surface coatings in natural waters

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Acta Geochimica 2006年第S1期 200-201页

作者： Deming DONG, Yongzheng LU, Xiuyi HUA, Liang LIU, Xiue SHEN College of Environment and Resources, Jilin University, Changchun 166226, China

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Distribution and its mechanism of suspended particulate matters in the southern Huanghai Sea and the East China Sea in summer

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Acta Oceanologica Sinica 2011年第5期30卷 94-100页

作者： QIAO Lulu LIU Yong CHEN Jiaojie MA Yanyan LI Guangxue SONG Jun Key Laboratory of Seafloor Science and Exploration Technology Ocean University of China Qingdao 266100 China College of Marine Geosciences Ocean University of China Qingdao 266100 China National Marine Data and Information Service State Oceanic Administration Tianjin 300171 China

Water temperature,turbidity,chlorophyll-a and suspended sediment concentration （SSC） were investigated at 61 stations of eight sections in the southern Huanghai Sea （HS） and the East China Sea （ECS） during the summer （28 June to 15 July） of *** horizontal distribution of suspended parti culate matter （SPM） displayed a high concentration inshore and a low value *** maximum value can reach 10.4 mg/dm 3,which can be found at the Changjiang River *** the same site,the SSC was generally higher at the bottom than on the *** the vertical direction,distribution characteristics of turbidity can be divided into two types：in the southern HS high values at the bottom while low values on the surface,and in the ECS high values inshore with low values *** thermocline in the HS and the Taiwan Warm Current in the ECS could be important factors preventing the SPM from diffusing upward and *** the typhoon Ewiniar was not able to work on the major sediment transport under the thermocline during the observation.

关键词： turbidity suspended particulate matter summer thermocline warm current

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suspended particulate mercury associated with tidal fluxes in a lagoon environment impacted by cinnabar mining activity(northern Adriatic Sea)

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Journal of Environmental Sciences 2018年第6期30卷 100-113页

作者： Alisè Turritto Alessandro Acquavita Annelore Bezzi Stefano Covelli Giorgio Fontolan Elisa Petranich Raffaella Piani Simone Pillon Department of Mathematics and Geoscience University of Trieste Via Weiss 2 34128 Trieste Italy Co.N.I.S.Ma. Consorzio Nazionale Interuniversitario per le Scienze del Mare Piazzale Flaminio 9 00196 Rome Italy ARPA FVG Environmental Protection Agency of Friuli Venezia Giulia Via Cairoli 14 33057 Palmanova (Udine) Italy

The Isonzo River has been demonstrated to be a continuing point source of mercury（Hg）in the Gulf of Trieste although the Idrija mine was last active in 1996. The present study aims to investigate the role of the suspended particulate matter（SPM） associated with tidal fluxes to disperse particulate Hg（PHg） into the Grado coastal lagoon system. PHg concentrations（avg. 3.11 ± 2.62 μg/g, d.w.）, notwithstanding the ebb or flood tides, were significantly higher than the local sediment background（0.13 μg/g）. The relative affinity of Hg for the particulate phase in surface waters was confirmed by higher average distribution coefficient（Kd） values（5.6–6.7）. PHg contents showed the highest values in ebb tide conditions, thus suggesting their origin from the erosion of tidal flats and saltmarshes of the lagoon. When compared to river discharge, high PHg surface concentrations in flood tide are related to rainfall events occurring within the river basin. Results can be used to make an indicative assessment of the amount of Hg bound to SPM which is transported in and out of the lagoon basin following the action of tidal fluxes. A simple estimation provides a negative budget for the Grado lagoon sub-basin which loses between 0.14 and 1.16 kg of PHg during a tidal semi-cycle. This conclusion is in agreement with the evidence of morphological deterioration which has emerged from recent studies on the lagoon environment, and which testifies to a current sedimentary loss from the lagoon into the northern Adriatic Sea.

关键词： Mercury Tidal fluxes suspended particulate matter Lagoon

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Watershed characteristics and climate factors effect on the temporal variability of mercury in the southern Baltic Sea rivers

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Journal of Environmental Sciences 2018年第6期30卷 55-64页

作者： Karolina Gebka Magdalena Beldowska Dominika Saniewska Karol Kuliński Jacek Beldowski The Institute of Oceanography University of Gdansk Marszalka Pilsudskiego Alley 46 81-378 Gdynia Poland The Institute of Oceanology of The Polish Academy of Sciences Powstaflc6w Warszawy Street 55 81-712 Sopot Poland

Mercury（Hg） is a neurotoxic metal which can enter into the human organism mainly by fish consumption, skin and transpiration. In the coastal zone of the southern Baltic Sea, rivers are the main source of Hg. The Polish region represents the largest proportion of the Baltic Sea catchment and this research included four rivers of the Baltic watershed： the Reda,Zagórska Struga, Kacza and Gizdepka. The samples were collected in the years 2011–*** and particulate Hg concentration in these rivers were measured. Due to intensive rain,deposited mercury on the catchment area was washed out into the riverines water and introduced into the Baltic Sea. Consequently, the load of Hg increased three ***, the intensive dry atmospheric deposition during heating season caused the increase of the concentration of particulate Hg in the river water even by 85%. The research confirmed the role of the river flow magnitude in the load of mercury introduced into the sea by rivers. Moreover, a high variability of mercury concentration was connected to the additional sources such as the chemicals containing Hg and no municipal sewage *** analysis of stable isotopes indicated that the SPM contained terrestrial organic matter;however, there was no clear correlation between Hgtot, Corgand Ntotconcentrations and δ13C, δ15N, C/N in particulate matter.

关键词： Hg suspended particulate matter Stable isotopes Atmospheric deposition Rivers

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Characteristics of phosphorus fractionated from the sediment resuspension in abrupt expansion flow experiments

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Journal of Environmental Sciences 2010年第10期22卷 1519-1526页

作者： Jun Wan Ze Wang Hezhong Yuan . College of Environmental Science and Engineering Hohai University Nanjing 210098 China College of Water Conservancy and Hydropower Engineering Hohai University Nanjing 210098 China. State Key Laboratory of Lake Sediments Process Nanjing Institute of Geography and Limnology Chinese Academy of Sciences Nanjing 210098 China

Phosphorous （P） fraction characteristics in sediment resuspension were investigated under adequately hydrodynamic conditions. Four forms of P in overlying water, including dissolved inorganic P, dissolved total P, total P, and particulate P, and six fractions of P in suspended particulate matter （SPM）, including loosely sorbed P （NH4Cl-P）, redox-sensitive P （BD-P）, aluminum-bound P （Al- P）, organic P （NaOH-nrP）, calcium-bound P （Ca-P） and residual P （Res-P）, were quantified, respectively. Different hydrodynamic conditions resulted in different P form changes. Four states could be ascribed：（1） P desorption by sediment and SPM, and P adsorption by overlying water; （2） P desorption by SPM, and P adsorption by overlying water; （3） P adsorption by SPM, and P desorption by overlying water; and （4） P equilibrium between SPM and overlying water. The contents of P in overlying water acquired peak values in the middle position of the vertical P distribution due to the combined actions of SPM and sediment. P fractions in SPM were in the following order： BD-P 〉 NaOH-nrp 〉 Ca-P 〉 Al-P 〉 Res-P 〉 NH4Cl-P. BD-P in SPM frequently exchanged with P forms in overlying water. Resuspension was favorable to forming Ca-P in SPM.

关键词： phosphorus fractions hydrodynamic conditions suspended particulate matter abrupt expansion flow

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