Selective chemical leaching of cadmium, copper manganese and iron in marine sediments.

Kitano, Yasushi; Fujiyoshi, Ryoko

doi:10.2343/geochemj.14.113

Cited by 40 publications

(11 citation statements)

References 14 publications

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“…[15] All water samples were kept cold and in the dark prior to filtration under trace metal clean conditions. Samples were filtered within a few hours of collection using an inline filtration apparatus pressurized with filtered nitrogen Bolger et al [1978] marine SP 2 no Tessier et al [1979] river SED 2 yes Kitano and Fujiyoshi [1980] marine SED 3 yes Forstner and Stoffers [1981] marine SED 2 yes Gordon et al [1982] marine SP 2 no Orians and Bruland [1986] marine SP 2 no Landing and Bruland [1987] marine SP 2 no Martin and Gordon [1988] marine SP 2 no Canfield [1989] river SED 8 yes Martin et al [1989] marine SP 2 no Landing and Lewis [1991] marine SP 4 no Bruland et al [1994] marine SP 2 no Baruah et al [1996] river SED 2 yes Jung et al [1996] intertidal flat SED 2 yes Stamoulis et al [1996] river SED 2 yes Marin et al [1997] marine SED 2 yes Gordon et al [1998] marine The 25% HAc leach method was used on either suspended particles (SP) or sediment (SED). Some researchers also used a reducing agent.…”

Section: Sample Collection and Processingmentioning

confidence: 99%

Application of a chemical leach technique for estimating labile particulate aluminum, iron, and manganese in the Columbia River plume and coastal waters off Oregon and Washington

et al. 2008

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[1] In order to determine the total concentration of bioavailable trace metals in seawater, measurement of both the dissolved and labile particulate fractions is necessary. Comparison of labile particulate metal concentrations from various researchers is limited because of differing definitions of the fraction that is potentially available to phytoplankton on a time frame of generations. A comparison experiment was conducted on coastal and riverine suspended particulate matter to determine the difference between several commonly used techniques that operationally define the labile particulate trace metal fraction. Furthermore, we compared two leach techniques for surface transect samples from within the Columbia River plume and water offshore of Oregon and Washington, United States. The particulate trace metal concentration in the leachate was determined by high-resolution inductively coupled plasma-mass spectrometry. From this comparison, one chemical leach was chosen to best define the labile particulate fraction of Al, Fe, and Mn: a weak acid leach (25% acetic acid at pH 2) with a mild reducing agent (0.02 M hydroxylamine hydrochloride) and a short heating step (10 min 90-95°C). This leach was applied to three surface transects within the Columbia River plume. These coastal waters were found to be rich in labile particulate trace metals that are directly delivered from the Columbia River and indirectly supplied via resuspension from upwelling over a broad continental shelf.

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Section: Sample Collection and Processingmentioning

confidence: 99%

Application of a chemical leach technique for estimating labile particulate aluminum, iron, and manganese in the Columbia River plume and coastal waters off Oregon and Washington

et al. 2008

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“…Sediment powders were digested with 4 ml, 3 ml, and 6 ml of concentrated HF, HC1O4, HNO3, respectively, in a tightly-closed Teflon vessel on a hot plate at less than 150°C for 24 hours (Kitao and Fujiyoshi, 1980 '50'N , 8°10' N, 8'30'N, and 151'20" W, 151050' W, 152°20' W, respectively. Two-way travel time is marked on the left side of the profiles (7 seconds can be con verted approximately 5,250 m in water depth).…”

Section: Sampling and Analytical Methodsmentioning

confidence: 99%

Geochemistry of rare earth elements in two-color core sediments from the Korea Deep Ocean Study (KODOS)-90 site, NE equatorial Pacific.

et al. 1998

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“…Chemical leaching experiment Figure 2 shows the flow chart of chemical leaching pro cedure, which was already reported (KITANO and FuJIYOSHI, 1980).…”

Section: Introductionmentioning

confidence: 92%

Partitioning of cadmium, copper, manganese and iron into mineral and organic fractions in core sediments from the Osaka Bay.

Kitano

Fujiyoshi

1980

Geochem. J.

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Partitioning of cadmium into five fractions (1M CH3000NHo soluble, 1M CH3COOH soluble, 30% H202 soluble, 0.04M NH2OH-HCI soluble and silsicate lattice fractions) of core sediments from the Osaka Bay has been determined by using selective chemical leaching technique. In addition to cadmium, partitioning of copper, manganese and iron has been also examined as a control.Large amounts of heavy metals (cadmium and copper) are contained in the upper parts of the sedi ment. The cadmium and copper contents of the sediment are relatively large in the Bay near the industrial area.Cadmium is distributed mainly in 30% H2O2 soluble and silicate lattice fractions.Cadmium leached into 30% H202 solution may have been partly derived from ferro-manganese oxide fraction as well as pyrite fraction of the sediment.The amount of cadmium contained in silicate lattice fraction of the sediment in the Osaka Bay is larger than that of silicate rocks collected from land area.

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Selective chemical leaching of cadmium, copper manganese and iron in marine sediments.

Cited by 40 publications

References 14 publications

Application of a chemical leach technique for estimating labile particulate aluminum, iron, and manganese in the Columbia River plume and coastal waters off Oregon and Washington

Application of a chemical leach technique for estimating labile particulate aluminum, iron, and manganese in the Columbia River plume and coastal waters off Oregon and Washington

Geochemistry of rare earth elements in two-color core sediments from the Korea Deep Ocean Study (KODOS)-90 site, NE equatorial Pacific.

Partitioning of cadmium, copper, manganese and iron into mineral and organic fractions in core sediments from the Osaka Bay.

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