Showing papers in "Marine Chemistry in 1982"

TL;DR: In this paper, a chemiluminescent analysis technique for the determination of nanomolar quantities of nitrate, nitrate plus nitrite or nitrite alone in seawater is described.

TL;DR: In this paper, the authors describe the distribution of copper ions between a weak ion exchanger, as exemplified by MnO2, and natural organic complexing material in seawater.

TL;DR: In this article, a wide variety of substances, including known or potential pollutants, become associated with particles in coastal marine environments, which may result from ion exchange, precipitation, or hydrophobic interactions with the particle surface, and co-precipitation with iron and manganese hydrous oxide coatings.

TL;DR: In this article, the MnO 2 adsorption method combined with voltammetry is proposed for the direct determination of metal complexation in seawater of various salinities as a more satisfactory alternative to direct voltammetric measurements and bioassay methods.

TL;DR: In this article, a new experimental technique using differential pulse anodic stripping voltammetry with a thin-film mercury electrode and efficient mixing of the electrolyte for the apparent copper complexing capacity of seawater is proposed.

TL;DR: In this article, the authors used reverse-phase liquid chromatography employing C18 Sep-Pak cartridges (Waters Associates) to extract dissolved organic matter (DOM) and dissolved copper-organic complexes from the estuarine waters of Narragansett Bay, RI.

TL;DR: Water samples collected during a spring plankton bloom in the northern North Sea were investigated for dissolved organic carbon (DOC), total dissolved sugars (TDS) and dissolved amino acids (TDAA).

TL;DR: In this paper, a ligand exchange reaction between ligands of natural origin and an aminopolycarboxylic acid (EDTA) was used to determine the conditional stability constants of organic metal complexes.

TL;DR: In this paper, the problem of gypsum solubility in the Dead Sea was examined and it was shown that Pitzer's equations are applicable to such natural concentrated brines, and the degree of oversaturation increased very significantly during the last 20 years.

TL;DR: In this article, the authors conducted field studies of surface microlayer sampling methods involving simultaneous use of glass plates and two depths of screens and concluded that intercomparisons of data collected separately by the two methods is inadvisable.

TL;DR: There were no appreciable differences in complexing ability within or among species, suggesting that no excretion-complexation ‘strategy’ peculiar to each ecosystem exists among these species.

TL;DR: In this paper, several of the most widely used trace metal extraction techniques are compared for many commonly measured transition metals using a variety of naturally occurring major marine sediment types, and the results were generally quite good, both with regard to metal phase fractionation and overall total extraction of available metals.

TL;DR: In this paper, the influence of pH on the fluorescence (mFl) was studied in the Ems-Dollart estuary in two surveys (June, 1980 and March, 1981).

TL;DR: The stable form of dissolved chromium in oxygenated seawater is Cr(VI), but Cr(III)-species are also present at an analytically significant level.

TL;DR: In this paper, a tentative mass balance model of Al aq in the oceanic system is proposed that takes into account all of the presently known fluxes of Al Aq to and through the oceans.

TL;DR: In this article, small and large-size particulates (>50 μ m) have been collected during the ORGON IV cruise in the Arabian Sea (Northwestern Indian Ocean), using conventional metallic bottles and vertical near-surface (200-0 m) and deep (below 1000 m) plankton nets.

TL;DR: In this article, an observation of a strong seasonal variation of arsenic species found in the estuaries of the Rivers Beaulieu, Test and Itchen in central southern England is presented.

TL;DR: In this article, organic matter in four Quaternary sediment cores from the Gulf of Mexico and one core from the Washington State coast has been analyzed for lignin and stable carbon isotope compositions.

TL;DR: In the Ogeechee and Savannah Rivers, the concentrations of uranium were 0.046 ± 0.005 and 0.026 ± 1.01 μg/l, respectively as discussed by the authors.

TL;DR: In this paper, surface-active metal-binding organic matter was found to significantly influence the chemical speciation and transfer of metals across air-water and solid-water interfaces in the marine environment.

TL;DR: In this article, the densities of artificial solutions of Dead Sea waters have been measured at 20°, 25°, 30°, 35° and 40°C using a vibrating tube densimeter.

TL;DR: In this article, theoretical considerations and laboratory studies suggest that molecular iodine undergoes rapid hydrolysis to form hypoiodite when it is added to seawater, which is not suitable for studying the fate of molecular iodine in seawater.

TL;DR: Aromatic ketones were concentrated from filtered Baltic Sea water by liquid-solid adsorption as mentioned in this paper, and the neutral fraction was column chromatographed to yield sub-fractions of increasing polarity.

TL;DR: In this article, the atmospheric, primary down-column and sedimentary fluxes of particulate aluminium (Alp) have been calculated for a number of regions in the Atlantic Ocean.

TL;DR: The results of an intercomparison of three types of sampling devices and hydrowires, used for the collection of seawater samples for trace metal analysis, are presented in this paper.

TL;DR: In this paper, the results demonstrate that a very heterogeneous distribution of hydrocarbon composition and concentration exists in the seep environment and that the life-style and feeding habits of the organisms in this environment will have a dramatic effect on their hydrocarbon exposure.

TL;DR: In this paper, an intercalibration between 32 laboratories in 16 countries was conducted using acidified and ultraviolet-irradiated seawater, and the results showed good accuracy and precision in the recovery of spikes but they also demonstrate that the most serious errors in low-level determinations are systematic.

TL;DR: Amberlite XAD-1 resin was examined to test its suitability for extracting organic complexes of copper, zinc and iron from seawater as discussed by the authors, and the results are reminiscent of the behaviour observed when the adsorption capacity is being exceeded or flow rates are too high.

TL;DR: In this article, the concentrations of cadmium, copper, lead and zinc were measured at two locations in surface waters of the western North Atlantic in two different sampling modes: 1-1 teflon bottles and 30-1 Go-flo bottles.

TL;DR: In this article, the most abundant component was the highly unsaturated hydrocarbon n -heneicosahexaene (HEH), and also present was a series of mono- and di-unsaturated olefinic hydrocarbons with an uneven number of carbon atoms, starting with n -C 17.