1996 Compilation of Analytical Data on Nine GSJ Geochemical Reference Samples, “Sedimentary Rock Series”

Imai, Noboru; Terashima, Shigeru; Itoh, Sadahiko; Ando, Atsushi

doi:10.1111/j.1751-908x.1996.tb00184.x

Cited by 226 publications

(169 citation statements)

References 7 publications

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“…A similar result of Xray attenuation for light elements such as Al and Si was also reported for mineral dust filters by Formenti et al (2010). Reference materials were used for the calibration of Fe content of filter residue, which were provided from Geological Survey of Japan (sediment sample from Lake Biwa: JLK-1, Imai et al, 1996 and marine sediment sample from southern Pacific Ocean: JMS-2, Terashima et al, 2002).…”

Section: Observation Sites Experiments and Meteorological Datamentioning

confidence: 94%

Wet and dry deposition of mineral dust particles in Japan: factors related to temporal variation and spatial distribution

et al. 2014

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Abstract. Recent ground networks and satellite remotesensing observations have provided useful data related to spatial and vertical distributions of mineral dust particles in the atmosphere. However, measurements of temporal variations and spatial distributions of mineral dust deposition fluxes are limited in terms of their duration, location, and processes of deposition. To ascertain temporal variations and spatial distributions of mineral dust deposition using wet and dry processes, weekly deposition samples were obtained at Sapporo, Toyama, Nagoya, Tottori, Fukuoka, and Cape Hedo (Okinawa) in Japan during October 2008-December 2010 using automatic wet and dry separating samplers. Mineral dust weights in water-insoluble residue were estimated from Fe contents measured using an X-ray fluorescence analyser. Wet and dry deposition fluxes of mineral dusts were both high in spring and low in summer, showing similar seasonal variations to frequency of aeolian dust events (Kosa) in Japan. For wet deposition, highest and lowest annual dust fluxes were found at Toyama (9.6 g m −2 yr −1 ) and at Cape Hedo (1.7 g m −2 yr −1 ) as average values in 2009 and 2010. Higher wet deposition fluxes were observed at Toyama and Tottori, where frequent precipitation (> 60 % days per month) was observed during dusty seasons. For dry deposition among Toyama, Tottori, Fukuoka, and Cape Hedo, the highest and lowest annual dust fluxes were found respectively at Fukuoka (5.2 g m −2 yr −1 ) and at Cape Hedo (2.0 g m −2 yr −1 ) as average values in 2009 and 2010. The average ratio of wet and dry deposition fluxes was the highest at Toyama (3.3) and the lowest at Hedo (0.82), showing a larger contribution of the dry process at western sites, probably because of the distance from desert source regions and because of the effectiveness of the wet process in the dusty season.Size distributions of refractory dust particles were obtained using four-stage filtration: > 20, > 10, > 5, and > 1 µm diameter. Weight fractions of the sum of > 20 µ m and 10-20 µm (giant fraction) were higher than 50 % for most of the event samples. Irrespective of the deposition type, the giant dust fractions generally decreased with increasing distance from the source area, suggesting the selective depletion of larger giant particles during atmospheric transport. Based on temporal variations of PM c (2.5 < D < 10 µm), ground-based lidar, backward air trajectories, and vertical profiles of potential temperatures, transport processes of dust particles are discussed for events with high-deposition and low-deposition flux with high PM c . Low dry dust depositions with high PM c concentrations were observed under stronger (5 K km −1

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Section: Observation Sites Experiments and Meteorological Datamentioning

confidence: 94%

Wet and dry deposition of mineral dust particles in Japan: factors related to temporal variation and spatial distribution

et al. 2014

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“…PX7 can be used for the analysis of boron. Average, minimum, and maximum values of GSJ Igneous standards are obtained from 16 standards; JA-1, JA-2, JA-3, JB-1, JB-2, JB-3, JG-1, JG-2, JG-3, JGb-1, JGb-2, JH-1, JP-1, JR-1, JR-2, and JR-3 (Imai et al ., 1995;Imai et al ., 1999) Average, minimum, and maximum values of GSJ Sedimentary standards are obtained from 6 standards; JLk-1, JSl-1, JSl-2, JSd-1, JSd-2, and JSd-3 (Imai et al ., 1996;) GSJ Igneous standards Target range GSJ Sedimentary standards Table 1 Compositional ranges in routine analysis of geological samples PX10 is equivalent to the LIF200 with a higher reflection efficiency. Ge (111)-C and PE(002)-C (Table 2) are curved crystals with a higher reflection efficiency than the crystals of the normal Ge and PET, respectively.…”

Section: Specifications and Characteristics Of Xrf At The Gsj Shared mentioning

confidence: 99%

Optimization of analytical conditions for major element analysis of geological samples with XRF using glass beads

Ogasawara

Mikoshiba

Geshi

et al. 2018

Bull. Geol. Surv. Japan

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Ishizuka (2018) Optimization of analytical conditions for major element analysis of geological samples with XRF using glass beads. Bull. Geol. Surv. Japan, vol. 69 (2), p. 91-103, 4 figs, 6 tables. Abstract:The major element XRF analytical program, Bead03, has been prepared for geological samples. The analytical condition suitable for the samples was optimized considering sensitivity, precision, and the lower limit of detection. The detailed analytical protocol of Bead03 has been described, and Bead03 has been successfully used at the shared facility of the GSJ laboratory. Bead03 is generally used without the need for frequent calibration. As such, any user can perform analysis with a minimum number of steps and simple operation. Bead03 can also 1) perform overlapping correction of Br Lα on Al Kα, eliminating the effect of releasing agent LiBr, and 2) apply curve fitting of backgrounds for Na Kα and Mg Kα. The present report also describes the quality of calibration lines for silicate rock samples and analytical precision.

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“…A counting time of 300 s was repeated three times on a Ge detector for each secondary target, and elemental concentrations were determined by the fundamental parameter method. Geological standards, including JSd-1, JSd-2, JSd-3, JSl-1, Jlk-1, and JMn-1 (Geological Survey of Japan Referenced Materials) [24,25], were analyzed to confirm the analytical precision (relative standard deviations are 1.86% Fe2O3, 11.3% Cu, 3.09% Zn, 10.9% As, 45.5% Sn, and 53.2% Pb).…”

Section: Methodsmentioning

confidence: 99%

Heavy Metal Behavior in Lichen-Mine Waste Interactions at an Abandoned Mine Site in Southwest Japan

Sueoka

Sakakibara

Sera

2015

Metals

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Abstract:The lichen, Stereocaulon exutum Nylander, occurring in a contaminated abandoned mine site was investigated to clarify (1) the behavior of heavy metals and As during the slag weathering processes mediated by the lichen; and (2) the distribution of these elements in the lichen thallus on slag. The heavy metals and As in the slag are dissolved from their original phases during the weathering process by lichen substances (organic acids) and hypha penetration, in addition to non-biological weathering. The dissolved elements are absorbed into the lichen thallus. Some of these dissolved elements are distributed in the cells of the hyphae. The others are distributed on the surface of the hyphae as formless particles and show lateral distribution inside the cortex of the thallus. The Cu and Zn concentrations in the thalli are positively correlated with the concentrations in the corresponding substrata and a positive intercept in the regression curve obtained using a linear function. These chemical characteristics make this lichen a good biomarker for Cu and Zn contamination of the substrata of the lichen. Therefore, the present study supposes that Stereocaulon exutum has a possible practical application in biomonitoring or risk assessment of heavy metal pollution at abandoned mine sites.

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1996 Compilation of Analytical Data on Nine GSJ Geochemical Reference Samples, “Sedimentary Rock Series”

Cited by 226 publications

References 7 publications

Wet and dry deposition of mineral dust particles in Japan: factors related to temporal variation and spatial distribution

Wet and dry deposition of mineral dust particles in Japan: factors related to temporal variation and spatial distribution

Optimization of analytical conditions for major element analysis of geological samples with XRF using glass beads

Heavy Metal Behavior in Lichen-Mine Waste Interactions at an Abandoned Mine Site in Southwest Japan

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