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List of works by Hajime Obata

Colorimetric Detection of Mercury(II) Ion in Aqueous Solution Using Silver Nanoparticles

scientific article

Determination of picomolar beryllium levels in seawater with inductively coupled plasma mass spectrometry following silica-gel preconcentration

scientific article published on 16 September 2014

Determination of picomolar levels of platinum in estuarine waters: a comparison of cathodic stripping voltammetry and isotope dilution-inductively coupled plasma mass spectrometry

scientific article published on 26 July 2006

Determination of strontium-90 from direct separation of yttrium-90 by solid phase extraction using DGA Resin for seawater monitoring

scientific article

Determination of the sub-picomolar concentration of dissolved palladium in open ocean seawater

scientific article published on 11 May 2022

Developing Standards for Dissolved Iron in Seawater

article

Discovery of a new hydrothermal venting site in the southernmost Mariana Arc: Al-rich hydrothermal plumes and white smoker activity associated with biogenic methane

Dissolved Fe(II) and its oxidation rates in the Kuroshio area, subarctic Pacific, and Bering Sea

scientific article published in 2024

Dissolved Platinum Concentrations in Coastal Seawater: Boso to Sanriku Areas, Japan

scientific article published on 20 May 2017

Dissolved Zn and its speciation in the northeastern Indian Ocean and the Andaman Sea

Dissolved iron distribution in the western and central subarctic Pacific: HNLC water formation and biogeochemical processes

scientific article published in 2017

Distribution of Dissolved Zinc in the Western and Central Subarctic North Pacific

scientific article published in 2017

Equilibrator inlet-proton transfer reaction-mass spectrometry (EI-PTR-MS) for sensitive, high-resolution measurement of dimethyl sulfide dissolved in seawater.

scientific article published in November 2009

Geochemical origin of hydrothermal fluid methane in sediment-associated fields and its relevance to the geographical distribution of whole hydrothermal circulation

scholarly article

High-resolution measurement of multiple volatile organic compounds dissolved in seawater using equilibrator inlet–proton transfer reaction-mass spectrometry (EI–PTR-MS)

article

Laterally spreading iron, humic-like dissolved organic matter and nutrients in cold, dense subsurface water of the Arctic Ocean

scientific article published on 27 October 2014

Long‐Range Lateral Transport of Dissolved Manganese and Iron in the Subarctic Pacific

scientific article published on 31 January 2022

New insights into the biogeochemical cycling of copper in the subarctic Pacific: Distributions, size fractionation, and organic complexation

scientific article published in 2021

Observation of Dispersion in the Japanese Coastal Area of Released 90Sr, 134Cs, and 137Cs from the Fukushima Daiichi Nuclear Power Plant to the Sea in 2013

scientific article published on 24 October 2019

Onboard determination of submicromolar nitrate in seawater by anion-exchange chromatography with lithium chloride eluent

scientific article published on 01 September 2006

Rapid collection of iron hydroxide for determination of Th isotopes in seawater

scientific article published on 12 October 2013

Recent distribution of lead in the Indian Ocean reflects the impact of regional emissions

scientific article

Shelf humic substances as carriers for basin-scale iron transport in the North Pacific

scientific article published on 11 March 2020

Shipboard analysis of picomolar levels of manganese in seawater by chelating resin concentration and chemiluminescence detection

scientific article

Slowly Sinking Particles Underlie Dissolved Iron Transport Across the Pacific Ocean

scientific article published in 2021

Spatiotemporal variations of platinum in seawater in Otsuchi Bay, Japan after the 2011 tsunami

scientific article published on 22 November 2019

Study on vertical profiles of rare earth elements by using an ocean general circulation model

article

Subpolar marginal seas fuel the North Pacific through the intermediate water at the termination of the global ocean circulation

scientific article published on 27 May 2020

Sulfides in oxic seawater over the submarine hydrothermal area of Kikai Caldera south of Kyushu Island, Japan

The GEOTRACES Intermediate Data Product 2014

article

The GEOTRACES Intermediate Data Product 2017

scholarly article

Tritium in Japanese precipitation following the March 2011 Fukushima Daiichi Nuclear Plant accident

scientific article

Unique elution behavior of bromide and nitrate in anion-exchange chromatography using aqueous potassium chloride eluent containing cadmium or zinc ion

scientific article published on 01 January 2011

Vertical Profiles of 226Ra and 228Ra Activity Concentrations in the Western Subarctic Gyre of the Pacific Ocean

scientific article published on 01 June 2022

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