Improved chromatographic separations on anion-exchange resins

Mopper, Kenneth

doi:10.1016/0003-2697(78)90787-x

Cited by 21 publications

(7 citation statements)

References 18 publications

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“…Kerogen was imbedded in epoxy, polished, and measured according to the procedures described in Teichmüller (1982) and Ottenjann (1982), using an automated Zeiss analytical microscope. Samples of sediment and interstitial waters were analyzed for carbohydrates (CH) employing the technique described in Mopper (1978). Dissolved organic carbon (DOC) in the interstitial water was measured with a UV oxidation technique.…”

Section: Methodsmentioning

confidence: 99%

Organic Carbon and Nitrogen, Sediment Composition, and Clay Mineralogy of Deep Sea Drilling Project Site 603, Western Atlantic Ocean

Emeis¹,

Mycke²,

Richnow³

et al. 1987

Initial Reports of the Deep Sea Drilling Project

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Sediment and interstitial water samples recovered during DSDP Leg 93 at Site 603 (lower continental rise off Cape Hatteras) were analyzed for a series of geochemical facies indicators to elucidate the nature and origin of the sedimentary material. Special emphasis was given to middle Cretaceous organic-matter-rich turbidite sequences of Aptian to Turanian age.Organic carbon content ranges from nil in pelagic claystone samples to 4.2% (total rock) in middle Cretaceous carbonaceous mudstones of turbiditic origin. The organic matter is of marine algal origin with significant contributions of terrigenous matter via turbidites. Maturation indices (vitrinite reflectance) reveal that the terrestrial humic material is reworked. Maturity of autochthonous material (i.e., primary vitrinite) falls in the range of 0.3 to 0.6% ‰ Carbohydrate, hydrocarbon, and microscopic investigations reveal moderate to high microbial degradation. Unlike deep-basin black shales of the South and North Atlantic, organic-carbon-rich members of the Hatteras Formation lack trace metal enrichment. Dissolved organic carbon (DOC) in interstitial water samples ranges from 34.4 ppm in a sandstone sample to 126.2 ppm in an organic-matter-rich carbonaceous claystone sample. One to two percent of DOC is carbohydratecarbon.

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Section: Methodsmentioning

confidence: 99%

Organic Carbon and Nitrogen, Sediment Composition, and Clay Mineralogy of Deep Sea Drilling Project Site 603, Western Atlantic Ocean

Emeis¹,

Mycke²,

Richnow³

et al. 1987

Initial Reports of the Deep Sea Drilling Project

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“…An aliquot of this was analyzed for dissolved sugars on an automatic sugar analyzer (Biotronik, Frankfurt). Details of these analysis techniques are found in Mopper (1978). Total dissolved sugar data are the sum of individual sugars identified and quantified.…”

Section: Dissolved Sugarsmentioning

confidence: 99%

Preliminary Data on Dissolved Organic Carbon and Sugar in Interstitial Water from the Mississippi Fan and Orca and Pigmy Basins, Deep Sea Drilling Project Leg 96

Ishizuka¹,

Ittekkot²,

Degens³

et al. 1986

Initial Reports of the Deep Sea Drilling Project

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Preliminary data on dissolved organic carbon (DOC) and dissolved sugars in interstitial water samples collected at Sites 618, 619, and 623 of Deep Sea Drilling Project Leg 96 are presented.At Site 618 in Orca Basin, the DOC content of the interstitial water peaks in the hypersaline sulfate reduction zone. The sugar content reaches a maximum and the DOC content begins to decrease at the depth of methane gas generation. Below that depth, the sugar and DOC contents are about constant.At Site 619 in Pigmy Basin, the DOC content increases slightly with depth in the sulfate reduction and the methane fermentation zones. The sugar content is lower in the sulfate reduction zone than in the methane fermentation zone; sugar concentration increases and fluctuates with methane gas percentages within the methane fermentation zone.At Site 623 in the lower fan region of the Mississippi Fan, there is no sulfate reduction zone. The DOC and sugar contents of the interstitial water are almost constant with depth.

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“…Separation and identification of carbohydrates were carried out on a n automatic sugar analyser (Biotronik, Frankfurt, FRG). For methodological details consult Mopper (1978).…”

Section: Methodsmentioning

confidence: 99%

Dissolved Free and Combined Carbohydrates During a Phytoplankton Bloom in the Northern North Sea

Ittekkot¹,

Brockmann²,

Michaelis³

et al. 1981

Mar. Ecol. Prog. Ser.

172

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Variations in dissolved free and combined carbohydrates during a phytoplankton bloom in the northern North Sea were investigated. Large amounts of carbohydrates are released into seawater during the bloom; the major portion of this release occurs towards the end of the bloom. A considerable part of the released carbohydrates is in the combined form. Free dissolved carbohydrates are formed mainly by in situ hydrolysis of dissolved combined carbohydrates. Glucose and fructose dominate the free dissolved carbohydrate fraction. Glucose is formed biologically, and fructose biologically and abiotically from glucose. Glucose comprises more than 60 % of the combined carbohydrate fraction, followed by mannose, galactose and xylose. The production and release of dissolved carbohydrates in large amounts appear to be related to the availability of nutrients. The vertical distribution of dissolved carbohydrates is controlled by boundary layers in mid-water.

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Improved chromatographic separations on anion-exchange resins

Cited by 21 publications

References 18 publications

Organic Carbon and Nitrogen, Sediment Composition, and Clay Mineralogy of Deep Sea Drilling Project Site 603, Western Atlantic Ocean

Organic Carbon and Nitrogen, Sediment Composition, and Clay Mineralogy of Deep Sea Drilling Project Site 603, Western Atlantic Ocean

Preliminary Data on Dissolved Organic Carbon and Sugar in Interstitial Water from the Mississippi Fan and Orca and Pigmy Basins, Deep Sea Drilling Project Leg 96

Dissolved Free and Combined Carbohydrates During a Phytoplankton Bloom in the Northern North Sea

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