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Готові списки джерел за темами / Dissolved and particulate phases / Статті в журналах

Щоб переглянути інші типи публікацій з цієї теми, перейдіть за посиланням: Dissolved and particulate phases.

Статті в журналах з теми "Dissolved and particulate phases"

Автор: Grafiati

Опубліковано: 13 квітня 2024

Оновлено: 31 липня 2025

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1

Wei, Zhang, Li Simin, and Tang Fengbing. "Characterization of Urban Runoff Pollution between Dissolved and Particulate Phases." Scientific World Journal 2013 (2013): 1–6. http://dx.doi.org/10.1155/2013/964737.

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To develop urban stormwater management effectively, characterization of urban runoff pollution between dissolved and particulate phases was studied by 12 rainfall events monitored for five typical urban catchments. The average event mean concentration (AEMC) of runoff pollutants in different phases was evaluated. The AEMC values of runoff pollutants in different phases from urban roads were higher than the ones from urban roofs. The proportions of total dissolved solids, total dissolved nitrogen, and total dissolved phosphorus in total ones for all the catchments were 26.19%–30.91%, 83.29%–90.

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2

Pierce, Emily F., and Astrid Schnetzer. "Microcystin Concentrations, Partitioning, and Structural Composition during Active Growth and Decline: A Laboratory Study." Toxins 15, no. 12 (2023): 684. http://dx.doi.org/10.3390/toxins15120684.

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Microcystin can be present in variable concentrations, phases (dissolved and particulate), and structural forms (congeners), all which impact the toxicity and persistence of the algal metabolite. Conducting incubation experiments with six bloom assemblages collected from the Chowan River, North Carolina, we assessed microcystin dynamics during active growth and biomass degradation. Upon collection, average particulate and dissolved microcystin ranged between 0.2 and 993 µg L−1 and 0.5 and 3.6 µg L−1, respectively. The presence of congeners MC-LA, -LR, -RR, and -YR was confirmed with MC-RR and

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3

Zhou, Jun L., Steve Rowland, and R. Fauzi C. Mantoura. "Partition of synthetic pyrethroid insecticides between dissolved and particulate phases." Water Research 29, no. 4 (1995): 1023–31. http://dx.doi.org/10.1016/0043-1354(94)00240-8.

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4

Journal, Baghdad Science. "Distribution Of Some Heavy Metals In Water,Sediment & Fish Cyprinus carpio in Euphrates River Near Al- Nassiriya City Center South Iraq ." Baghdad Science Journal 8, no. 1 (2011): 552–60. http://dx.doi.org/10.21123/bsj.8.1.552-560.

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The heavy metals Cd, Cu, Fe, pb, and Zn were determined in dissolved and particulate phases of the water,in addition to exchangeable and residual phases of the sediment and in the selected organs of the fish Cyprinus carpio collected from the Euphrates River near Al-Nassiriya city center south of Iraq during the summer period / 2009 .Also sediment texture and total organic carbon(TOC) were measured. Analysis emploing a flam Atomic Absorption Spectrophotometers . The mean regional concentrations of the heavy metals in dissolved (µg/l) and particulate phases (µg/gm) dry weight were Cd (0.15,16.1

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5

Yeats, P. A., and D. H. Loring. "Dissolved and particulate metal distributions in the St. Lawrence estuary." Canadian Journal of Earth Sciences 28, no. 5 (1991): 729–42. http://dx.doi.org/10.1139/e91-063.

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Dissolved and particulate metal concentrations in the St. Lawrence estuary were determined during the high spring runoff and at a period of lower runoff in the fall. The distributions in the estuary are influenced by seasonally variable freshwater discharges and a turbidity maximum zone (TMZ). Dissolved Al, Fe, Mn, Co, Cu, Ni, and Zn concentrations generally decrease significantly with increasing salinity, but Cd shows no significant covarience with salinity. Most metals show complex distribution patterns, and only the distributions of Cu and Ni can be described by linear regression equations.

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6

Morris, A. W., A. J. Bale, R. J. M. Howland, et al. "Sediment Mobility and its Contribution to Trace Metal Cycling and Retention in a Macrotidal Estuary." Water Science and Technology 18, no. 4-5 (1986): 111–19. http://dx.doi.org/10.2166/wst.1986.0186.

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Measurements of trace metals in the dissolved, suspended particulate and sediment phases of the Tamar Estuary have been combined with observations of sediment and suspended particle mobility in an interpretation of metal cycling and retention processes within the system. Dissolved metal distributions indicate pronounced estuarine metal reactivity involving net removal onto suspended particles in the low salinity, high turbidity zone and net input from the sediment in the middle estuary. These processes are not reflected in the metal contents of suspended particulate material and superficial se

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7

Hassan, Fikrat M., Maysoon M. Saleh, and Jasim M. Salman. "A Study of Physicochemical Parameters and Nine Heavy Metals in the Euphrates River, Iraq." E-Journal of Chemistry 7, no. 3 (2010): 685–92. http://dx.doi.org/10.1155/2010/906837.

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This study was conducted to reveal possible environmental effects on the Euphrates River from the Al-Hindiya barrage to the downstream end of Al-Kufa city in the middle of Iraq. Seven sites were selected along the study area and sampled during March 2004 to February 2005. We measured physical and chemical properties (air and water temperature, pH, electrical conductivity, TDS, TSS and dissolved oxygen) as well as, concentration and distribution of some heavy metals (Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb and Zn) in both dissolved and particulate phases, in the water and sediments (exchangeable and res

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8

Peck, Gillian A., and J. David Smith. "Distribution of dissolved and particulate 226Ra, 210Pb and 210Po in the Bismarck Sea and western equatorial Pacific Ocean." Marine and Freshwater Research 51, no. 7 (2000): 647. http://dx.doi.org/10.1071/mf99170.

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The distribution of the radionuclides 226Ra, 210Pb and 210Po in the dissolved (<0.45 µm) and 210Pb and 210Po in the particulate (>0.45 µm) phases was measured in the upper 300 m of the Bismarck Sea off the Sepik River and along the equator from 143˚E to 152˚E in the western equatorial Pacific Ocean. 210Pb and 210Po occurred principally in the dissolved phase with a 210Po/210Pb ratio <1. Particulate matter had 210Po/210Pb ratios greater than 1.0. Box model calculations yielded an average atmospheric flux of 210Pb of 4.5 mBq cm-2 year-1 to the ocean surface. The average residence times

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9

Ellwood, Michael J., David A. Hutchins, Maeve C. Lohan, et al. "Iron stable isotopes track pelagic iron cycling during a subtropical phytoplankton bloom." Proceedings of the National Academy of Sciences 112, no. 1 (2014): E15—E20. http://dx.doi.org/10.1073/pnas.1421576112.

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The supply and bioavailability of dissolved iron sets the magnitude of surface productivity for ∼40% of the global ocean. The redox state, organic complexation, and phase (dissolved versus particulate) of iron are key determinants of iron bioavailability in the marine realm, although the mechanisms facilitating exchange between iron species (inorganic and organic) and phases are poorly constrained. Here we use the isotope fingerprint of dissolved and particulate iron to reveal distinct isotopic signatures for biological uptake of iron during a GEOTRACES process study focused on a temperate spr

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10

Karlsson, O. Magnus. "Forms and Variability of Phosphorus in the Baltic Sea–-A Challenge to Ecosystem Modeling." Air, Soil and Water Research 3 (January 2010): ASWR.S6123. http://dx.doi.org/10.4137/aswr.s6123.

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Knowledge of the partitioning between the dissolved and particulate phases of nutrient elements is a key factor in aquatic ecosystem modeling since partitioning regulates the availability to demand ratio of the nutrient in question. This is seldom taken into account in environmental monitoring programs. In this paper, the occurrence and variability of particulate and dissolved phosphorus were studied in the coastal zone of the Baltic Sea. The particulate fraction (PF) of total phosphorus (TP) concentration in coastal waters from some forty stations along the east coast of Sweden was, on averag

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11

Lau, Maximilian P., Michael Sander, Jörg Gelbrecht, and Michael Hupfer. "Spatiotemporal redox dynamics in a freshwater lake sediment under alternating oxygen availabilities: combined analyses of dissolved and particulate electron acceptors." Environmental Chemistry 13, no. 5 (2016): 826. http://dx.doi.org/10.1071/en15217.

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Environmental contextAt sediment surfaces, the availability of oxygen is controlled by its downward transport from the water surface and its consumption in microbial metabolism. Microorganisms can also consume substances other than oxygen to dispose of the surplus charge that is generated during microbial metabolism. We investigate the complex dynamics of these other substances when the oxygen availability fluctuates, and thereby contribute to the mechanistic understanding of oxygen-consuming processes in aquatic environments. AbstractBenthic mineralisation in lakes largely controls the availa

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12

Ellwood, Michael J., Peter Wilson, Kay Vopel, and Malcolm Green. "Trace metal cycling in the Whau Estuary, Auckland, New Zealand." Environmental Chemistry 5, no. 4 (2008): 289. http://dx.doi.org/10.1071/en07077.

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Environmental context. The accumulation of trace metals from urban runoff is a serious environmental concern. In the present paper we show that, in the case of the Whau Estuary, Auckland, New Zealand, there is a significant particulate Zn input, of which a significant amount of Zn is lost from the particulate phase into the dissolved phase within the water column, and via molecular diffusion across the water–sediment interface. The present study shows that changes in the chemical speciation of Zn, associated with changes in salinity, play a major role in regulating the recycling of this metal

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13

Duan, J., R. Cloete, J. C. Loock, et al. "Biogenic-to-lithogenic handoff of particulate Zn affects the Zn cycle in the Southern Ocean." Science 384, no. 6701 (2024): 1235–40. http://dx.doi.org/10.1126/science.adh8199.

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Zinc (Zn) is vital to marine organisms. Its active uptake by phytoplankton results in a substantial depletion of dissolved Zn, and Zn bound to particulate organic matter replenishes dissolved Zn in the ocean through remineralization. However, we found that particulate Zn changes from Zn bound to phosphoryls in cells to recalcitrant inorganic pools that include biogenic silica, clays, and iron, manganese, and aluminum oxides in the Southern Ocean water column. The abundances of inorganic pools increase with depth and are the only phases preserved in sediments. Changes in the particulate-Zn spec

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14

Valenta, P., R. Breder, L. Mart, H. Rützel, and A. G. A. Merks. "Distribution of Cd and Pb between dissolved and particulate phases in estuaries." Toxicological & Environmental Chemistry 14, no. 1-2 (1987): 129–41. http://dx.doi.org/10.1080/02772248709357198.

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15

Ip, Ching-man Carman, Wing-yee Chloe Tang, and Xiang-dong Li. "Trace metals in particulate and dissolved phases in Victoria Harbour, Hong Kong." Chinese Journal of Geochemistry 25, S1 (2006): 159. http://dx.doi.org/10.1007/bf02840048.

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16

طالب فرهود, آفاق. "Use the aquatic plant (Typha domingensis) as bioindicator to the accumulation of someheavy metals in Abu-Zariq Marsh Southern of Iraq." University of Thi-Qar Journal of Science 6, no. 2 (2017): 35–43. http://dx.doi.org/10.32792/utq/utjsci/v6i2.57.

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The present study was conducted during the winter and summer of 2016 to study the bioaccumulation ofsome heavy metals and the use of (Typha domingensis )as bioindicator to the accumulation of these elementsthrough the food chain (water - sediments - aquatic plant) at three stations in Abu-Zariq Marsh - southern Iraq.Three heavy elements (Cd, Cu, Pb) were used in this study. The elements were studied in the dissolvedand particulate phases of water, sediment and aquatic plant (T. domingensis), the bioconcentration factor B C.F was calculated for the above studied elements in the aquatic plant ti

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17

Guesmia, M., J. L. Reyss, and C. Cheviet. "Modelling of60Co concentrations in the dissolved and particulate phases in the Loire estuary." Radioprotection 37, no. C1 (2002): C1–781—C1–787. http://dx.doi.org/10.1051/radiopro/2002203.

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18

Simpson, Stuart L., Simon C. Apte, and Cheryl M. Davies. "Bacterially Assisted Oxidation of Copper Sulfide Minerals in Tropical River Waters." Environmental Chemistry 2, no. 1 (2005): 49. http://dx.doi.org/10.1071/en04064.

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Environmental Context. It is well known that bacteria can significantly accelerate oxidation rates of copper sulfide minerals under acidic conditions. However, this process is not thought to be important at higher pH. This study reports the bacterially assisted oxidation of copper sulfide minerals in slightly alkaline (pH 8.0–8.3) tropical river waters downstream of a large copper mine. This process leads to significant solubilization of copper from particulate phases. Abstract. Field and laboratory experiments are reported which demonstrate the bacterially facilitated oxidation of copper sulf

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19

Vistnes, Hanne, Nadine A. Sossalla, Anna Røsvik, et al. "The Determination of Polycyclic Aromatic Hydrocarbons (PAHs) with HPLC-DAD-FLD and GC-MS Techniques in the Dissolved and Particulate Phase of Road-Tunnel Wash Water: A Case Study for Cross-Array Comparisons and Applications." Toxics 10, no. 7 (2022): 399. http://dx.doi.org/10.3390/toxics10070399.

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Accelerated solvent extraction (ASE) and solid phase extraction (SPE) protocols tailored to either gas chromatography mass spectrometry (GC-MS) or high-performance liquid chromatography coupled to diode-array and fluorescence detection (HPLC-DAD-FLD) were developed for the determination of EPA 16 polycyclic aromatic hydrocarbons (PAHs) in the particulate and dissolved phase of road-tunnel wash water. An analytical approach was developed, assessed, and applied on environmental samples collected from five road tunnels in Norway. The absolute recoveries ranged from 57 to 104% for the particulates

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20

Hwang, Byung-Gi, Kwan-Soo Jun, Young-Dae Lee, and Wu-Seng Lung. "Importance of DOC in sediments for contaminant transport modelling." Water Science and Technology 38, no. 11 (1998): 193–99. http://dx.doi.org/10.2166/wst.1998.0467.

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Contaminants in the interstitial waters are not only dissolved but also associated with a filterable colloidal phase such as DOC. The DOC plays an important role regulating the distribution of chemicals between particulate and dissolved phases since it binds chemicals and makes them unavailable for vertical diffusive exchange. A three-phase partitioning model that consists of free-dissolved, DOC-bound, particulate-bound components of the chemicals involved is used for the contaminant transport model in order to include the effect of DOC on the partition coefficient. The contaminant model is li

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21

Hamad, Samera Hussein, James Jay Schauer, Martin Merrill Shafer, Esam Abed Al-Raheem, and Hyder Satar. "The Distribution between the Dissolved and the Particulate Forms of 49 Metals across the Tigris River, Baghdad, Iraq." Scientific World Journal 2012 (2012): 1–13. http://dx.doi.org/10.1100/2012/246059.

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The distribution of dissolved and particulate forms of 49 elements was investigated along transect of the Tigris River (one of the major rivers of the world) within Baghdad city and in its major tributary (Diyala River) from 11 to 28 July 2011. SF-ICP-MS was used to measure total and filterable elements at 17 locations along the Tigris River transect, two samples from the Diyala River, and in one sample from the confluence of the two rivers. The calculated particulate forms were used to determine the particle-partition coefficients of the metals. No major changes in the elements concentrations

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22

Keskitalo, Kirsi H., Lisa Bröder, Dirk Jong, et al. "Seasonal variability in particulate organic carbon degradation in the Kolyma River, Siberia." Environmental Research Letters 17, no. 3 (2022): 034007. http://dx.doi.org/10.1088/1748-9326/ac4f8d.

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Abstract Major Arctic rivers are undergoing changes due to climate warming with higher discharge and increased amounts of solutes and organic carbon (OC) draining into rivers and coastal seas. Permafrost thaw mobilizes previously frozen OC to the fluvial network where it can be degraded into greenhouse gases and emitted to the atmosphere. Degradation of OC during downstream transport, especially of the particulate OC (POC), is however poorly characterized. Here, we quantified POC degradation in the Kolyma River, the largest river system underlain with continuous permafrost, during 9–15 d whole

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23

King, Amanda J., James W. Readman, and John L. Zhou. "Behaviour of polycyclic aromatic hydrocarbons in dissolved, colloidal, and particulate phases in sedimentary cores." International Journal of Environmental Analytical Chemistry 87, no. 3 (2007): 211–25. http://dx.doi.org/10.1080/03067310601025189.

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24

Grotti, M., F. Soggia, F. Ardini, and E. Magi. "Major and trace element partitioning between dissolved and particulate phases in Antarctic surface snow." Journal of Environmental Monitoring 13, no. 9 (2011): 2511. http://dx.doi.org/10.1039/c1em10215j.

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25

Mundo, Rodrigo, Tetsuya Matsunaka, Hisanori Iwai, et al. "Interannual Survey on Polycyclic Aromatic Hydrocarbons (PAHs) in Seawater of North Nanao Bay, Ishikawa, Japan, from 2015 to 2018: Sources, Pathways and Ecological Risk Assessment." International Journal of Environmental Research and Public Health 17, no. 3 (2020): 904. http://dx.doi.org/10.3390/ijerph17030904.

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To improve the understanding of the emission sources and pathways of polycyclic aromatic hydrocarbons (PAHs) in the coastal environments of remote areas, their particulate and dissolved concentrations were analyzed on a monthly basis from 2015 to 2018 in surface waters of Nanao Bay, Japan. The concentration of the targeted 13 species of PAHs on the United States Environmental Protection Agency (USEPA) priority pollutant list in dissolved and particle phases were separately analyzed by high-performance liquid chromatography (HPLC) coupled to a fluorescence detector. Particulate and dissolved PA

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26

HATZIANESTIS, I., and E. SKLIVAGOU. "Dissolved and Suspended Polycyclic Aromatic Hydrocarbons (PAH) in the North Aegean Sea." Mediterranean Marine Science 3, no. 1 (2002): 89. http://dx.doi.org/10.12681/mms.261.

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The distribution and sources of polycyclic aromatic hydrocarbons (PAH) were investigated in the seawater of the North Aegean Sea. The measured PAH concentrations in SPM are generally considered as elevated for open sea waters and were evenly distributed in the area. Their levels in the dissolved phase (1.6-33.0 ng/l) were much higher than those encountered in the corresponding particulate phases (0.04-10.2 ng/l). The PAH patterns in both phases were dominated by the three ring aromatics and their alkylated derivatives, reflecting a predominant contribution of fossil hydrocarbons probably relat

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27

Xiao, Min, Fengchang Wu, Yuanbi Yi, Zenglei Han, and Zhongliang Wang. "Optical Properties of Dissolved Organic Matter and Controlling Factors in Dianchi Lake Waters." Water 11, no. 10 (2019): 1967. http://dx.doi.org/10.3390/w11101967.

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Characterization of dissolved organic matter (DOM) is useful in understanding environment quality and carbon cycling in the lake system. In this study, the fluorescence of DOM, major ions, and nutrients in water were investigated to understand the sources and the transformation of DOM in Dianchi Lake, the sixth largest freshwater lake in China. The dissolved organic carbon content in water above the deposition layer was higher than 5 mg C∙L−1 but lower than that in pore water. Two primary components of humic (C1) and protein-like components (C2) were identified using parallel factor (PARAFAC)

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28

Pavoni, Elena, Efren García-Ordiales, Stefano Covelli, Pablo Cienfuegos, and Nieves Roqueñí. "Legacy of Past Mining Activity Affecting the Present Distribution of Dissolved and Particulate Mercury and Methylmercury in an Estuarine Environment (Nalón River, Northern Spain)." Applied Sciences 11, no. 10 (2021): 4396. http://dx.doi.org/10.3390/app11104396.

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At the Nalón River estuary (Asturias, Northern Spain), the occurrence of Hg is due to historical mining activity which has resulted in environmental issues of great concern. Although several studies have investigated the sediment compartment regarding Hg contamination, no information is currently available on the fate of Hg and MeHg in the water column. Considering different hydrodynamic/seasonal conditions, water samples were collected along the estuary to evaluate Hg and MeHg distribution and partitioning behaviour between solid and aqueous phases. The complementary effect of the river disch

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29

Aldridge, J. N. "CSERAM: A Model for Prediction of Marine Radionclide Transport in both Particulate and Dissolved Phases." Radiation Protection Dosimetry 75, no. 1 (1998): 99–103. http://dx.doi.org/10.1093/oxfordjournals.rpd.a032255.

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30

Murdock, R. N., M. S. Johnson, J. D. Hemingway, and S. R. Jones. "The Distribution of Radionuclides between the Dissolved and Particulate Phases of a Comtaminated Freshwater Stream." Environmental Technology 16, no. 1 (1995): 1–12. http://dx.doi.org/10.1080/09593331608616240.

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31

Chung, Y. "210Pb in the western Indian Ocean: distribution, disequilibrium, and partitioning between dissolved and particulate phases." Earth and Planetary Science Letters 85, no. 1-3 (1987): 28–40. http://dx.doi.org/10.1016/0012-821x(87)90018-5.

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32

Milne, Angela, Christian Schlosser, Bronwyn D. Wake, et al. "Particulate phases are key in controlling dissolved iron concentrations in the (sub)tropical North Atlantic." Geophysical Research Letters 44, no. 5 (2017): 2377–87. http://dx.doi.org/10.1002/2016gl072314.

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Rochelle-Newall, E. J., V. T. Chu, O. Pringault, et al. "Phytoplankton diversity and productivity in a highly turbid, tropical coastal system (Bach Dang Estuary, Vietnam)." Biogeosciences Discussions 8, no. 1 (2011): 487–525. http://dx.doi.org/10.5194/bgd-8-487-2011.

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Abstract. The factors controlling estuarine phytoplankton diversity and production are relatively well known in temperate systems. Less however is known about the factors affecting phytoplankton community distribution in tropical estuaries. This is surprising given the economic and ecological importance of these large, deltaic ecosystems, such as are found in South East Asia. Here we present the results from an investigation into the factors controlling phytoplankton distribution and phytoplankton-bacterial coupling in the Bach Dang Estuary, a sub-estuary of the Red River system, in Northern V

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34

Hà, Dang Thi. "ASSESSMENT OF ARSENIC CONTAMINATION IN THE RED RIVER: HIGH RESOLUTION MONITORING COUPLED WITH SPATIAL ANALYSIS BY GIS." Vietnam Journal of Science and Technology 51, no. 6 (2018): 779. http://dx.doi.org/10.15625/2525-2518/51/6/11644.

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The Red River (China/Vietnam, A = 155 000 km2) is a typical humid tropics river originating from the mountainous area of Yunan Province in China. Based on two sampling campaigns covering the whole Vietnamese watershed in 40 sites at low and high water levels during 2009, the seasonal and spatial variations of As concentrations in dissolved and particulate phases were determined. The dissolved As concentrations in rainy season were relatively lower than in dry season, suggesting the dilution effect of less arsenic-contaminated water. In contract, the particulate As concentrations during low wat

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35

Chen, Tzong-Yueh, and Annelie Skoog. "Effects of Salinity on Abiotic Aggregation of Organic Matter and Subsequent Microbial Responses." Gels 8, no. 12 (2022): 836. http://dx.doi.org/10.3390/gels8120836.

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Studies of marine aggregation have focused on determining formation rates of larger particles from small particles. However, it has been shown that particles can form from the dissolved phase, which includes colloidal material. The purpose of this study was to investigate the effect of aggregation on the chemical composition of both the dissolved and particulate phases in two salinity regimes: (1) the coast of Avery Point, Connecticut, USA (AP; salinity of 30.1 psu); (2) the estuary of Thames River, Connecticut, USA (TR; salinity of 5.0 psu). The samples were incubated on a roller table for tw

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36

Zgheib, Sally, Régis Moilleron, Mohamed Saad, and Ghassan Chebbo. "Partition of pollution between dissolved and particulate phases: What about emerging substances in urban stormwater catchments?" Water Research 45, no. 2 (2011): 913–25. http://dx.doi.org/10.1016/j.watres.2010.09.032.

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37

Chung, Y., and R. Finkel. "210Po in the western Indian Ocean: distributions, disequilibria and partitioning between the dissolved and particulate phases." Earth and Planetary Science Letters 88, no. 3-4 (1988): 232–40. http://dx.doi.org/10.1016/0012-821x(88)90080-5.

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38

Thanh-Nho, Nguyen, Emilie Strady, Tran–Thi Nhu-Trang, Frank David, and Cyril Marchand. "Trace metals partitioning between particulate and dissolved phases along a tropical mangrove estuary (Can Gio, Vietnam)." Chemosphere 196 (April 2018): 311–22. http://dx.doi.org/10.1016/j.chemosphere.2017.12.189.

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39

Grard, Aline, and Jean-François Deliège. "Characterizing Trace Metal Contamination and Partitioning in the Rivers and Sediments of Western Europe Watersheds." Hydrology 10, no. 2 (2023): 51. http://dx.doi.org/10.3390/hydrology10020051.

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Adsorption and desorption processes occurring on suspended and bed sediments were studied in two datasets from western Europe watersheds (Meuse and Mosel). Copper and zinc dissolved and total concentrations, total suspended sediment concentrations, mass concentrations, and grain sizes were analyzed. Four classes of mineral particle size were determined. Grain size distribution had to be considered in order to assess the trace metal particulate phase in the water column. The partitioning coefficients of trace metals between the dissolved and particulate phases were calculated. The objective of

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40

Senila, Marin, Erika Andrea Levei, Lacrimioara Ramona Senila, and Marius Roman. "Preliminary Investigation concerning Metals Bioavailability in Waters of Aries River Catchment by Using the Diffusive Gradients in Thin Films Technique." Journal of Chemistry 2015 (2015): 1–8. http://dx.doi.org/10.1155/2015/762121.

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The paper presents the metals content and bioavailability in waters of Aries River catchment, Romania. Concentration of labile dissolved metal species measured by diffusive gradients in thin films technique (DGT), metals in colloidal and in particulate phases, and also general physical-chemical indicators of water were determined. Very high total metal concentrations were found in the tributaries that drain the mining areas. However, the influence of the polluted tributaries on the Aries River water quality was moderate, as a consequence of the tributaries low flow rate compared with that of t

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41

Kojima, Keisuke, Shinji Kobayashi, Tomonori Kindaichi, and Noriatsu Ozaki. "Modelling of wet deposition of atmospheric polycyclic aromatic hydrocarbons by the consecutive measurements in an urban area, Japan." Water Science and Technology 62, no. 8 (2010): 1922–30. http://dx.doi.org/10.2166/wst.2010.484.

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The wet deposition for particulate matter (PM) and polycyclic aromatic hydrocarbons (PAHs) was modelled from the consecutive measurements of atmospheric concentration and wet deposition for particulate matter and PAHs in Higashi-Hiroshima city, Japan. In order to estimate the model in detail, the wet deposition was classified with that from gaseous and PM phase. The gaseous PAHs assumed to be dissolved into raindrops according to Henry's constant, and the PAHs attached on atmospheric PM were assumed to be trapped with PM. The PM was classified with coarse (&gt;7 μm) and fine (0.6–7 μm) PM

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42

Hadi, Nabaa Shakir. "Environmental chemistry and ecotoxicology of heavy metals in water, sediment, and aquatic plants in lotic ecosystem." Environmental Health Engineering and Management 11, no. 1 (2024): 51–59. http://dx.doi.org/10.34172/ehem.2024.07.

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Background: This study examined the effects of the Al-Rustumiya sewage treatment station on the heavy metals (Fe, Zn, and Mn) that pollute the Diyala River. Methods: Samples of water, sediment, and aquatic vegetation were collected monthly from Diyala River at four locations between March 2022 and February 2023. The samples were collected using standard sampling methods and analyzed with an atomic absorption spectrophotometer. Results: The order of heavy metals in water was: Fe>Mn>Zn, both in the dissolved and particulate phases. The sediment was ordered in the exchangeable and residual

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43

Martin, J. M., J. M. Mouchel, and P. Nirel. "Some Recent Developments in the Characterization of Estuarine Particulates." Water Science and Technology 18, no. 4-5 (1986): 83–92. http://dx.doi.org/10.2166/wst.1986.0183.

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Estuaries and coastal zones are characterised by very varied chemical and physical environments. As a result, heterogenous reactions predominate between dissolved and mineral phases, and with the biota. These reactions primarily affect elements and compounds located at the particulate surface. Thus the determination of surface properties of particles is an important key to understanding interactions of trace elements and organic compounds between particulate and dissolved phases in estuarine and coastal systems. Specific surface area (SSA), cationic exchange capacity (CEC) and heat of immersio

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44

يوسف الخفاجي, باسم, and نور كاظم خيرالله. "Assessment of Concentration of some trace elements in water and aquatic plant(<i>Ceratophyllum demersum</i>) in Euphrates River in Suq- Alshuyouk, south of Iraq." University of Thi-Qar Journal of Science 6, no. 2 (2017): 3–10. http://dx.doi.org/10.32792/utq/utjsci/v6i2.86.

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The present study deal with measuering the concentration of two from the trace elements (Pb and Co) inwater(dissolved and particulate) phase and their concentration in aquatic plant ( Ceratophyllum demersum ) in theEuphrates River at Suq-Alshyoukh district –South of Iraq from Autumn 2015 to Summer 2016 . The results showedthat concentrations of trace elements in the aquatic plant were higher than their concentration s in both phases of water.it concluded from the present study that the concentrations of Pb in plant and water were higher than the Co concentration. Also the study refers that the

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45

Rose, Clémence, Nadine Chaumerliac, Laurent Deguillaume, et al. "Modeling the partitioning of organic chemical species in cloud phases with CLEPS (1.1)." Atmospheric Chemistry and Physics 18, no. 3 (2018): 2225–42. http://dx.doi.org/10.5194/acp-18-2225-2018.

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Abstract. The new detailed aqueous-phase mechanism Cloud Explicit Physico-chemical Scheme (CLEPS 1.0), which describes the oxidation of isoprene-derived water-soluble organic compounds, is coupled with a warm microphysical module simulating the activation of aerosol particles into cloud droplets. CLEPS 1.0 was then extended to CLEPS 1.1 to include the chemistry of the newly added dicarboxylic acids dissolved from the particulate phase. The resulting coupled model allows the prediction of the aqueous-phase concentrations of chemical compounds originating from particle scavenging, mass transfer

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46

UNNIKRISHNAN, P., and S. M. NAIR. "Partitioning of trace metals between dissolved and particulate phases in a typical backwater system of Kerala, India." International Journal of Environmental Studies 61, no. 6 (2004): 659–76. http://dx.doi.org/10.1080/00207230290011508.

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47

Donner, Mark W., Muhammad Babar Javed, William Shotyk, Kevin A. Francesconi, and Tariq Siddique. "Arsenic speciation in the lower Athabasca River watershed: A geochemical investigation of the dissolved and particulate phases." Environmental Pollution 224 (May 2017): 265–74. http://dx.doi.org/10.1016/j.envpol.2017.02.004.

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48

Bounouira, H., A. Choukri, R. Cherkaoui El Moursli, et al. "Geochemical behaviour of major and trace elements in dissolved and particulate phases of the Bouregreg river (Morocco)." Journal of Radioanalytical and Nuclear Chemistry 295, no. 2 (2012): 1067–83. http://dx.doi.org/10.1007/s10967-012-2208-x.

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49

Yao, Min, Zhongjian Li, Xingwang Zhang, and Lecheng Lei. "Polychlorinated Biphenyls in the Centralized Wastewater Treatment Plant in a Chemical Industry Zone: Source, Distribution, and Removal." Journal of Chemistry 2014 (2014): 1–10. http://dx.doi.org/10.1155/2014/352675.

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Polychlorinated biphenyls (PCBs) could be dissolved in wastewater or adsorbed on particulate. The fate of PCBs in wastewater is essential to evaluate the feasibility of wastewater treatment processes and the environmental risk. Here dissolved and adsorbed concentrations of twenty concerned PCB congeners and total PCBs have been measured in the centralized wastewater treatment plant of a chemical industry zone in Zhejiang, China. It was found that the dyeing chemical processes were the main source of PCBs, which contributed more than 13.6%. The most abundant PCB was PCB-11 in the liquid and sol

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50

Saito, Mak A., Abigail E. Noble, Nicholas Hawco, et al. "The acceleration of dissolved cobalt's ecological stoichiometry due to biological uptake, remineralization, and scavenging in the Atlantic Ocean." Biogeosciences 14, no. 20 (2017): 4637–62. http://dx.doi.org/10.5194/bg-14-4637-2017.

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Abstract. The stoichiometry of biological components and their influence on dissolved distributions have long been of interest in the study of the oceans. Cobalt has the smallest oceanic inventory of inorganic micronutrients and hence is particularly vulnerable to influence by internal oceanic processes including euphotic zone uptake, remineralization, and scavenging. Here we observe not only large variations in dCo : P stoichiometry but also the acceleration of those dCo : P ratios in the upper water column in response to several environmental processes. The ecological stoichiometry of total

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