Showing papers in "Marine Chemistry in 1980"

TL;DR: In this paper, the solubility of nitrous oxide in pure water and seawater has been measured microgasometrically over the range 0 −40°C and the data have been corrected for nonideality and are fitted to equations in temperature and salinity of the form used previously to fit solubilities of other gases.

TL;DR: Sediment cores were taken from the Gulf of California, and pore waters recovered by mechanical squeezing were compared with coexisting solid phases to deduce the mechanisms involved in pyrite formation as mentioned in this paper.

TL;DR: In this article, the nitrogen isotope ratios of 42 sediment samples of total nitrogen and 38 dissolved pore-water ammonium samples from Santa Barbara Basin sediment cores were measured, and the results suggest that the dissolved ammonium in the pore water is produced from bacterial degradation of marine organic matter.

TL;DR: In this paper, a large number of seawater and sediment pore water samples from a wide variety of environments and locations were analyzed using electrodialysis and two forms of liquid chromatography.

TL;DR: General trends indicate the existence of a relation between particulate fatty acid and zooplanktonic biomass concentrations in the bay water, andPolyunsaturated fatty acids such as C 20 and C 22 are more abundant in plankton and suspended matter than in seawater.

TL;DR: In this paper, trace-metal analyses of water samples obtained during a cruise with the Soviet R.V. "Akademik Kurchatov" in the Indian Ocean are presented.

TL;DR: The stable isotope ratio of sulfur ( 34 S/ 32 S) in dissolved sulfate and hydrogen sulfide was measured for 20 water samples from two deep hydrocasts from the south-central Black Sea as discussed by the authors.

TL;DR: In this paper, several recent marine sediments were treated with eleven chemical reagents in order to ascertain the iodine and bromine species present in the sediments, and it was concluded that the iodine is present primarily in its electro-positive state as N-iodoamides while bromines exists in many different chemical forms.

TL;DR: In this paper, the authors estimate the magnitudes of different processes affecting particulate matter in the microlayer: atmospheric deposition, Brownian diffusion, gravitational settling, bubble flotation and mixing.

TL;DR: It is proposed that docosenoic acids have no obligatory role in the lipid biochemistry of either marine or freshwater fish.

TL;DR: In this article, an oxidation state diagram was used to study the relative stability of inorganic iodine species in an aqueous system and it was shown that although iodate is the most stable form, iodide may exist as a metastable form in a basic solution.

TL;DR: The elemental solubilities of three coal fly ash samples and two coastal marine-aerosol samples in seawater are different as mentioned in this paper, and the coal fly-ash samples were collected from the electrostatic precipitators on coal-fired power plants.

TL;DR: In this paper, the apparent solubility product of calcite was measured by saturometry as a function of temperature and salinity, and an equation was fitted to the experimental data, resulting in pK′sp = 6.5795 − 3.3.

TL;DR: In this article, surface film (microlayer) hydrocarbons are found in greater concentrations than the dissolved fraction, which in turn is greater than the particulate hydrocarbon quantities in the water column, indicating that the use of a microlayer enrichment factor may not be appropriate in these waters.

TL;DR: In this paper, an analysis of the concentration product (Ca2+) × (CO32−) in the pore waters of marine sediments has been used to estimate the apparent solubility products of sedimentary calcite and aragonite in seawater.

TL;DR: In this paper, the competition for anions between the cations of the alkali and alkaline earth metals (to form ion pairs) and the cation of heavy metals ( to form complexes) is investigated.

TL;DR: In this article, the authors used thermodynamic considerations based on existing data from various laboratory studies of plutonium species in aqueous solution to predict the speciation of this radioactive pollutant in seawater.

TL;DR: In this paper, the downward flux observed in sediment trap experiments is not a net removal rate and that there must be an upward particulate flux in the bay, indicating that the large flux in winter was not caused by the resuspension of old bottom sediments.

TL;DR: In this paper, trace metals were extracted directly on board the vessel, using a dithiocarbamate-Freon procedure, and analyses of the extracts are performed onshore by atomic absorption spectrometry.

TL;DR: The ability of the isolated organic matter to interact with copper ions also varied, but over a relatively narrow range which was not exceeded by more than a factor of two by similarly isolated terrigenous organic matter as mentioned in this paper.

TL;DR: In this article, the contributions of ion-pair formation and change in activity coefficient along the diffusion path were studied experimentally by conducting diffusion experiments in which solutions of KCl, NaCl, MgCl 2, Li 2 SO 4, K 2 SO4, Na2 SO 4 and MgSO 4, at an ionic strength of 0.7, were allowed to diffuse into distilled water.

TL;DR: The importance of interstitial pore water as a vehicle for transport of dissolved ions between sediment at depth and the overlying ocean reservoir may be overestimated as mentioned in this paper, and the major cause of this overestimation is the assumption that the rate of ionic diffusion through the sediment is of a similar magnitude to the reaction occurring within the sediment column.

TL;DR: In this article, the initial steps in the degradation of chlorophyll-a in a temperate, sandy intertidal sediment from a low-energy coastline at Corner Inlet, SE. Victoria.

TL;DR: In this paper, the authors derived the conversion rates of the mononuclear ferric iron species Fe(OH)30 and Fe(2+ )2+ and their implications for the behavior of these species in seawater are examined.

TL;DR: In this article, improved correlations between mean oceanic residence times ( t Y ) and water partition coefficients ( K Y ), and between K Y and the electronegativity function ( Q YO ) support the concept that the average composition of seawater can be estimated, based on a simple dynamic model.

TL;DR: In this paper, methyl esters of saturated and unsaturated fatty acids were isolated as trace components from organic material suspended in seawater, and most of them were identified based on the comparison of gas chromatographic retention indices and mass spectrometric fragmentation with those of authentic standard compounds.

TL;DR: In this article, the potential significance of mixed-ligand solution complexes was analyzed and it was shown that mixed complexes can dominate a metal's solution chemistry even when only one single ligand type species, MXa + b, is important.

TL;DR: In this paper, single ion detection was used as a selective and sensitive method to quantify different phthalate esters in Baltic seawater in the 1:1010-1:1011 concentration range.

TL;DR: In this paper, the adsorption isotherm of copper in seawater on γ-Al 2 O 3 particles was determined with and without EDTA, for both EDTA alone and for the Cu-EDTA complex.

TL;DR: In this paper, the most stable oxidation state of an element was shown to indicate the existence of metastable species in marine geochemistry of the nitrogen and manganese systems, and the inferences drawn from these diagrams are consistent with our present understanding of the marine geochemical of these elements.