Geochemical Journal最新文献_第6页

Seasonal variation of monoterpene emissions from forest floor and its contribution to whole canopy flux in a Larix kaempferi forest 日本落叶松森林地表单萜排放的季节变化及其对林冠通量的贡献

IF 0.8 4区地球科学

Geochemical Journal Pub Date : 2021-01-01 DOI: 10.2343/geochemj.2.0640

Tomoki Mochizuki, Moeko Ujihara, Yoshiyuki Takahashi, Hajime Kobayashi, A. Tani

引用次数: 0

Holocene high-resolution monsoon climate fluctuations in the Mu Us desert, China 毛乌素沙漠全新世高分辨率季风气候波动

IF 0.8 4区地球科学

Geochemical Journal Pub Date : 2021-01-01 DOI: 10.2343/geochemj.2.0636

Dongfeng Niu, Yuejun Si, Bao-sheng Li, Fengnian Wang, P. Shu, Xiaohao Wen, Yihua Guo, Chen Wang

引用次数: 0

The influence of hypoxia on the distribution of dissolved bioactive trace metals in Mikawa Bay, central Japan 缺氧对日本中部三川湾溶解性生物活性微量金属分布的影响

IF 0.8 4区地球科学

Geochemical Journal Pub Date : 2021-01-01 DOI: 10.2343/geochemj.2.0625

H. Kimoto, Koshi Yamamoto

引用次数: 0

Boron determinations of silicate reference rocks by the isotope dilution method in a high-background environment 用同位素稀释法测定高本底环境中硅酸盐参考岩中的硼

IF 0.8 4区地球科学

Geochemical Journal Pub Date : 2021-01-01 DOI: 10.2343/geochemj.2.0614

S. Nakai

{"title":"Boron determinations of silicate reference rocks by the isotope dilution method in a high-background environment","authors":"S. Nakai","doi":"10.2343/geochemj.2.0614","DOIUrl":"https://doi.org/10.2343/geochemj.2.0614","url":null,"abstract":"of rock samples (Yonezawa et al., 1999; Sano et al., 1998, 1999, 2001; Miyoshi et al., 2010; Shinjoe et al., 2013). Sano et al. (1998, 1999) reported that relative standard deviations (% RSD) of replicate analyses of standard rocks were better than 5% for the wide range of boron concentrations of 8–160 ppm. After the nuclear power plant accident in 2011, neutron radiation experiments were halted in Japan. Boron determination was attempted in a high background environment in this study. An ICP-MS used for boron determinations was installed in a laboratory where laser ablation ICP mass spectrometry analyses on glass bead samples fused with LiBO4 was conducted with another ICP-MS. The author investigated effective methods to reduce the influence of a high background on boron peaks. Three analytical methods were compared to improve the accuracy of boron determination. When the concentration of an element is measured using a sensitivity method that compares a signal intensity of an element in a sample solution with that in a standard solution, an internal standard element is often doped to the sample solution to correct the influence of the sample-derived matrix. The internal standard element is selected from elements that are not included in the sample solution and which have a similar mass number to that of the element to be analyzed. Finding a suitable internal standard element is difficult when light elements such as Li, Be, and B in silicate rock samples are determined. Gotan et al. Boron determinations of silicate reference rocks by the isotope dilution method in a high-background environment","PeriodicalId":12682,"journal":{"name":"Geochemical Journal","volume":"26 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82489678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Assessing the debris generated by the small carry-on impactor operated from the Hayabusa2 mission 评估隼鸟2号任务中携带的小型撞击器产生的碎片

IF 0.8 4区地球科学

Geochemical Journal Pub Date : 2021-01-01 DOI: 10.2343/geochemj.2.0632

Motoo Ito, Y. Takano, Y. Kebukawa, T. Ohigashi, M. Matsuoka, K. Kiryu, M. Uesugi, Tomoki Nakamura, H. Yuzawa, Keita Yamada, H. Naraoka, T. Yada, M. Abe, M. Hayakawa, T. Saiki, S. Tachibana, Hayabusa II Project Team

{"title":"Assessing the debris generated by the small carry-on impactor operated from the Hayabusa2 mission","authors":"Motoo Ito, Y. Takano, Y. Kebukawa, T. Ohigashi, M. Matsuoka, K. Kiryu, M. Uesugi, Tomoki Nakamura, H. Yuzawa, Keita Yamada, H. Naraoka, T. Yada, M. Abe, M. Hayakawa, T. Saiki, S. Tachibana, Hayabusa II Project Team","doi":"10.2343/geochemj.2.0632","DOIUrl":"https://doi.org/10.2343/geochemj.2.0632","url":null,"abstract":"1Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), B200 Monobe, Nankoku, Kochi 783-8502, Japan 2Biogeochemistry Research Center (BGC), Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 2-15 Natsushima, Yokosuka 237-0061, Japan 3Graduate School of Engineering Science, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan 4UVSOR Synchrotron Facility, Institute for Molecular Science, 38 Nishigo-naka, Myodaiji, Okazaki, Aichi 444-8585, Japan 5Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, Kanagawa 252-5210, Japan 6Japan Synchrotron Radiation Research Institute (JASRI/SPring-8), 1-1-1 Kouto, Sayo, Hyogo 679-5198, Japan 7Department of Earth Science, Graduate School of Science, Tohoku University, Aoba, Sendai, Miyagi 980-8578, Japan 8Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology (TIT), Yokohama 226-8502, Japan 9Department of Earth and Planetary Sciences, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan 10UTokyo Organization for Planetary and Space Science (UTOPS), University of Tokyo, 7-3-1 Hongo, Tokyo 113-0033, Japan","PeriodicalId":12682,"journal":{"name":"Geochemical Journal","volume":"14 3","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72634916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Watershed analysis for geochemical mapping in Japan based on a hydrologic model: The concentrations of 53 elements and the dominant lithology in a drainage basin 基于水文模型的日本流域地球化学填图分析:流域53种元素的浓度和优势岩性

IF 0.8 4区地球科学

Geochemical Journal Pub Date : 2021-01-01 DOI: 10.2343/geochemj.2.0618

Atsuyuki Ohta, N. Imai, Takashi Okai, M. Manaka, Ran Kubota, A. Nakamura, Yoshiko Tachibana

{"title":"Watershed analysis for geochemical mapping in Japan based on a hydrologic model: The concentrations of 53 elements and the dominant lithology in a drainage basin","authors":"Atsuyuki Ohta, N. Imai, Takashi Okai, M. Manaka, Ran Kubota, A. Nakamura, Yoshiko Tachibana","doi":"10.2343/geochemj.2.0618","DOIUrl":"https://doi.org/10.2343/geochemj.2.0618","url":null,"abstract":"Copyright © 2021 by The Geochemical Society of Japan. cross-boundary and sub-continental geochemical mapping projects have been actively pursued, with the main objective of environmental assessment (Bølviken et al., 1986; De Vos et al., 2006; Reimann et al., 1998; Salminen et al., 2005). In Japan, the Geological Survey of Japan, the National Institute of Advanced Industrial Science and Technology (AIST), has created country-scale land and sea geochemical maps using 3,024 stream sediment samples and 4,905 marine sediment samples, for 53 elements (Imai et al., 2004, 2010). Japanese geochemical mapping is designed for environmental assessment in mining areas, large-scale urban regions, and coastal sea zones, and for the investigation of migration processes of materials from the land to the sea. Sampling location, sample photographs, color maps, and elemental concentrations are available in the online database (https://gbank.gsj.jp/ geochemmap/). Furthermore, we are also in the process of creating a regional spatial distribution map of Sr isotopic ratios using stream sediments, collected for JapaWatershed analysis for geochemical mapping in Japan based on a hydrologic model: The concentrations of 53 elements and the dominant lithology in a drainage basin","PeriodicalId":12682,"journal":{"name":"Geochemical Journal","volume":"88 1","pages":""},"PeriodicalIF":0.8,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77631081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sorption and desorption of phenanthrene and fluorene in mangrove forest soils of the Morrocoy National Park, Venezuelan Caribbean 委内瑞拉加勒比地区莫罗伊国家公园红树林土壤中菲和芴的吸附和解吸

IF 0.8 4区地球科学

Geochemical Journal Pub Date : 2021-01-01 DOI: 10.2343/geochemj.2.0621

Katya Reategui, R. Amaro, L. Rodríguez, Carelys Salazar, R. Fernández, Jochen Smuda

引用次数: 0

Multielement quantification and Pb isotope analysis of the certified reference material ERM-CZ120 for fine particulate matter 细颗粒物标准物质ERM-CZ120的多元素定量及Pb同位素分析

IF 0.8 4区地球科学

Geochemical Journal Pub Date : 2021-01-01 DOI: 10.2343/geochemj.2.0642

Masatoshi Honda

引用次数: 2

Measurements, sources and sinks of photoformed reactive oxygen species in Japanese rivers 日本河流中光形成活性氧的测量、来源和汇