Pub Date : 2023-12-01DOI: 10.1142/s0129083523990012
{"title":"AUTHOR INDEX VOLUME 31 (2023)","authors":"","doi":"10.1142/s0129083523990012","DOIUrl":"https://doi.org/10.1142/s0129083523990012","url":null,"abstract":"","PeriodicalId":14345,"journal":{"name":"International Journal of PIXE","volume":"128 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138621586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-15DOI: 10.1142/s0129083523500055
K. Sera, S. Goto, T. Hosokawa, Y. Saitoh, A. Terakawa, K. Ishii
Although green vegetables are valuable sources of essential elements, and are safe in that they lack harmful elements, they are high in oxalic acid, increasing the risk of urolithiasis. We performed elemental analyses on spinach (Spinacia oleracea L), Malabar nightshade (Basella alba), and water Morning Glory (Ipomoea aquatica), which contain large amounts of oxalic acid, and compared the data to those of Japanese mustard spinach (Brassica rapa var. perviridis), which is the second most commonly consumed green vegetable (after spinach) in Japan. We focused on concentrations of Ca, Mg, and Sr that suppress the formation of ureteral stones (calculi). The calcium concentration in spinach was [Formula: see text]g/g in leaves and [Formula: see text]g/g in stalks, and the level in Japanese mustard spinach were [Formula: see text]g/g in leaves and [Formula: see text]g/g in stalks. The overall Sr concentration in Japanese mustard spinach was thus 10-fold higher than in spinach, but the Mg concentration was lower than that in spinach. The concentrations of Ca and Sr in Malabar nightshade and water Morning Glory were 3- to 5-fold higher than in spinach. As the former vegetables are consumed much less often than spinach, the risk of urolithiasis is low. We explored how the concentrations of these elements changed after boiling.
{"title":"Elemental concentrations in green vegetables from the perspective of urolithiasis risk","authors":"K. Sera, S. Goto, T. Hosokawa, Y. Saitoh, A. Terakawa, K. Ishii","doi":"10.1142/s0129083523500055","DOIUrl":"https://doi.org/10.1142/s0129083523500055","url":null,"abstract":"Although green vegetables are valuable sources of essential elements, and are safe in that they lack harmful elements, they are high in oxalic acid, increasing the risk of urolithiasis. We performed elemental analyses on spinach (Spinacia oleracea L), Malabar nightshade (Basella alba), and water Morning Glory (Ipomoea aquatica), which contain large amounts of oxalic acid, and compared the data to those of Japanese mustard spinach (Brassica rapa var. perviridis), which is the second most commonly consumed green vegetable (after spinach) in Japan. We focused on concentrations of Ca, Mg, and Sr that suppress the formation of ureteral stones (calculi). The calcium concentration in spinach was [Formula: see text]g/g in leaves and [Formula: see text]g/g in stalks, and the level in Japanese mustard spinach were [Formula: see text]g/g in leaves and [Formula: see text]g/g in stalks. The overall Sr concentration in Japanese mustard spinach was thus 10-fold higher than in spinach, but the Mg concentration was lower than that in spinach. The concentrations of Ca and Sr in Malabar nightshade and water Morning Glory were 3- to 5-fold higher than in spinach. As the former vegetables are consumed much less often than spinach, the risk of urolithiasis is low. We explored how the concentrations of these elements changed after boiling.","PeriodicalId":14345,"journal":{"name":"International Journal of PIXE","volume":"59 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139270627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-11-15DOI: 10.1142/s0129083523500043
K. Sera, S. Goto, T. Hosokawa, Y. Saitoh, A. Terakawa, K. Ishii
We collected seven types of green vegetables produced in 11 areas of Japan and analyzed their elemental concentrations. Halogen analyses were performed with and without prior chemical treatment. The most popular type of spinach exhibited the highest concentrations of Mg, K, and Zn, and the lowest concentrations of alkaline earths (Ca and Sr) and halogens (Cl and Br). Japanese mustard spinach, the second most consumed type of spinach in Japan, exhibited the highest concentrations of P, S, Ca, Fe, and Br and adequate amounts of other essential elements. The other five green vegetables had unique elemental concentrations. In particular, radish had the highest concentrations of Ca, Na, and Cl and the lowest concentrations of Mg, P, Cu, and Zn. Leaves and stalks were separately analyzed. Fe, Cu, Zn, and Mn concentrations tended to be higher in leaves, and K, Na, and Rb concentrations were higher in stalks. Halogen (Cl and Br) concentrations in Japanese mustard spinach produced on farmland near the coast were remarkably high, suggesting an effect of sea salt. However, even in green vegetables produced near the coast, halogen uptake clearly differed by production area. The concentrations of Cl and Br in Japanese mustard spinach produced in two coastal areas were very high and were not removed by washing, but were mostly lost after boiling samples from Taneichi for 3[Formula: see text]min. In contrast, there was no difference in Na concentrations among vegetables produced in coastal and inland areas. The concentrations of essential elements such as Mg, Ca, and Fe were clearly higher in green vegetables from small- versus large-scale production areas, perhaps attributable to differences in the farming methods employed.
{"title":"Elemental concentrations of seven types of green vegetables grown on small-scale farmlands in rural areas of Japan: Differences according to the type and place of production","authors":"K. Sera, S. Goto, T. Hosokawa, Y. Saitoh, A. Terakawa, K. Ishii","doi":"10.1142/s0129083523500043","DOIUrl":"https://doi.org/10.1142/s0129083523500043","url":null,"abstract":"We collected seven types of green vegetables produced in 11 areas of Japan and analyzed their elemental concentrations. Halogen analyses were performed with and without prior chemical treatment. The most popular type of spinach exhibited the highest concentrations of Mg, K, and Zn, and the lowest concentrations of alkaline earths (Ca and Sr) and halogens (Cl and Br). Japanese mustard spinach, the second most consumed type of spinach in Japan, exhibited the highest concentrations of P, S, Ca, Fe, and Br and adequate amounts of other essential elements. The other five green vegetables had unique elemental concentrations. In particular, radish had the highest concentrations of Ca, Na, and Cl and the lowest concentrations of Mg, P, Cu, and Zn. Leaves and stalks were separately analyzed. Fe, Cu, Zn, and Mn concentrations tended to be higher in leaves, and K, Na, and Rb concentrations were higher in stalks. Halogen (Cl and Br) concentrations in Japanese mustard spinach produced on farmland near the coast were remarkably high, suggesting an effect of sea salt. However, even in green vegetables produced near the coast, halogen uptake clearly differed by production area. The concentrations of Cl and Br in Japanese mustard spinach produced in two coastal areas were very high and were not removed by washing, but were mostly lost after boiling samples from Taneichi for 3[Formula: see text]min. In contrast, there was no difference in Na concentrations among vegetables produced in coastal and inland areas. The concentrations of essential elements such as Mg, Ca, and Fe were clearly higher in green vegetables from small- versus large-scale production areas, perhaps attributable to differences in the farming methods employed.","PeriodicalId":14345,"journal":{"name":"International Journal of PIXE","volume":"2 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139274843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-31DOI: 10.1142/s0129083523500031
Katsumi Saitoh, Koyomi Nakazawa, Osamu Nagafuchi
In order to characterize particles emitted from aircraft, we analyzed the elemental composition information of particles collected from aircraft using positive matrix factorization (PMF). The factor profile and source contribution were deduced based on PMF analysis with five factors and 30 random starting points. Factor 1 contains particles derived from engine oil. Factor 2 contains particles originating from the friction between the runway surface and the tire. Factor 3 contains particles deposited on the runway surface, mainly composed of soil components. Factor 4 contains particles derived from the turbine blade. Factor 5 contains particles derived from plant combustion and particles scattered during landing. Engine reversers accounted for more than 85% of the element total value with factor 2, factor 4, and factor 5. The carbon disc brakes had different main factors depending on the sample. For the tire grooves, factor 2 and factor 3 accounted for the majority of the element total value. The PMF analysis revealed that the particles collected from aircraft contained elements with different modes of generation. In addition, it was found that particles derived from plant combustion, which are presumed to have little relevance to particles emitted from aircraft, were included in the particles collected from the engine reverser, carbon disc brakes, and tire grooves.
{"title":"Characterization analysis of particles emitted from aircraft using positive matrix factorization","authors":"Katsumi Saitoh, Koyomi Nakazawa, Osamu Nagafuchi","doi":"10.1142/s0129083523500031","DOIUrl":"https://doi.org/10.1142/s0129083523500031","url":null,"abstract":"In order to characterize particles emitted from aircraft, we analyzed the elemental composition information of particles collected from aircraft using positive matrix factorization (PMF). The factor profile and source contribution were deduced based on PMF analysis with five factors and 30 random starting points. Factor 1 contains particles derived from engine oil. Factor 2 contains particles originating from the friction between the runway surface and the tire. Factor 3 contains particles deposited on the runway surface, mainly composed of soil components. Factor 4 contains particles derived from the turbine blade. Factor 5 contains particles derived from plant combustion and particles scattered during landing. Engine reversers accounted for more than 85% of the element total value with factor 2, factor 4, and factor 5. The carbon disc brakes had different main factors depending on the sample. For the tire grooves, factor 2 and factor 3 accounted for the majority of the element total value. The PMF analysis revealed that the particles collected from aircraft contained elements with different modes of generation. In addition, it was found that particles derived from plant combustion, which are presumed to have little relevance to particles emitted from aircraft, were included in the particles collected from the engine reverser, carbon disc brakes, and tire grooves.","PeriodicalId":14345,"journal":{"name":"International Journal of PIXE","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135870947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-31DOI: 10.1142/s0129083523500018
K. Okuyama, K. Shintani, Y. Tamaki, Y. Matsuda, M. Sakurai, T. Saito, H. Yamamoto, K. Naito, H. Kanda, M. Hayashi, T. Satoh, N. Yamada, R. Yamagata, Y. Ishii
Titanium fluoride (TiF[Formula: see text] reduces mineral loss and lesion depth more effectively than sodium fluoride (NaF). However, the pH values of TiF 4 and NaF solutions are different. This study aimed to evaluate the effects of TiF 4 solution on the inhibition of demineralization and elemental distribution in root dentin in comparison with NaF solution at the same pH and fluoride concentrations. This study was conducted using 0.5% TiF 4 or 0.675% NaF solution adjusted to pH 5 or pH 7. Bovine dentin specimens of 200 [Formula: see text]m thickness were subjected to pH cycling (pH 4.5 and 7.0; 6 cycles/day; simulated oral conditions) for eight weeks to prepare artificial carious dentin. During this cycle, the specimens were soaked in each solution once a week for 5 min. The control group involved no fluoride application during the test period. After cycling, the demineralization depth was measured and the calcium, fluorine, and titanium distributions were analyzed and calculated using an in-air micro-proton-induced X-ray emission (PIXE)/proton-induced gamma emission (PIGE) system at TIARA. At pH 7, TiF 4 solution yielded a lower lesion depth than the NaF solution. The NaF solution at pH 7 showed lower fluorine concentration than that with the other fluoride solutions. Thus, TiF 4 is more effective in inhibiting demineralization than NaF in a solution adjusted to pH 7. Moreover, the presence of titanium may strengthen the tooth structure.
{"title":"Effects of titanium fluoride on caries inhibition and elemental distribution in the tooth structure: Comparisons with sodium fluoride at the same fluoride concentration and pH values","authors":"K. Okuyama, K. Shintani, Y. Tamaki, Y. Matsuda, M. Sakurai, T. Saito, H. Yamamoto, K. Naito, H. Kanda, M. Hayashi, T. Satoh, N. Yamada, R. Yamagata, Y. Ishii","doi":"10.1142/s0129083523500018","DOIUrl":"https://doi.org/10.1142/s0129083523500018","url":null,"abstract":"Titanium fluoride (TiF[Formula: see text] reduces mineral loss and lesion depth more effectively than sodium fluoride (NaF). However, the pH values of TiF 4 and NaF solutions are different. This study aimed to evaluate the effects of TiF 4 solution on the inhibition of demineralization and elemental distribution in root dentin in comparison with NaF solution at the same pH and fluoride concentrations. This study was conducted using 0.5% TiF 4 or 0.675% NaF solution adjusted to pH 5 or pH 7. Bovine dentin specimens of 200 [Formula: see text]m thickness were subjected to pH cycling (pH 4.5 and 7.0; 6 cycles/day; simulated oral conditions) for eight weeks to prepare artificial carious dentin. During this cycle, the specimens were soaked in each solution once a week for 5 min. The control group involved no fluoride application during the test period. After cycling, the demineralization depth was measured and the calcium, fluorine, and titanium distributions were analyzed and calculated using an in-air micro-proton-induced X-ray emission (PIXE)/proton-induced gamma emission (PIGE) system at TIARA. At pH 7, TiF 4 solution yielded a lower lesion depth than the NaF solution. The NaF solution at pH 7 showed lower fluorine concentration than that with the other fluoride solutions. Thus, TiF 4 is more effective in inhibiting demineralization than NaF in a solution adjusted to pH 7. Moreover, the presence of titanium may strengthen the tooth structure.","PeriodicalId":14345,"journal":{"name":"International Journal of PIXE","volume":"175 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135814235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-27DOI: 10.1142/s012908352350002x
K. Yasuda, N. Yamada, R. Yamagata, Y. Ishii, N. Suzui, T. Satoh, N. Kawachi
Elemental analysis of the epidermis of tea leaves was performed using the micro-beam particle-induced X-ray emission (micro-PIXE) method. The ratios of the X-ray yields of silicon (Si), potassium (K), calcium (Ca), and manganese (Mn) to that of aluminum (Al) in the cell wall of epidermal cells of tea leaves were determined. The ratio of Si to Al X-ray yields agreed within a range of 11% in the four samples measured in this study. On the other hand, the ratio of the X-ray yields of K, Ca, and Mn to Al varied from 41% to 87%. This result suggests that Al forms compounds with Si in tea leaves.
{"title":"Study on chemical forms of aluminum in tea leaves using micro-PIXE method","authors":"K. Yasuda, N. Yamada, R. Yamagata, Y. Ishii, N. Suzui, T. Satoh, N. Kawachi","doi":"10.1142/s012908352350002x","DOIUrl":"https://doi.org/10.1142/s012908352350002x","url":null,"abstract":"Elemental analysis of the epidermis of tea leaves was performed using the micro-beam particle-induced X-ray emission (micro-PIXE) method. The ratios of the X-ray yields of silicon (Si), potassium (K), calcium (Ca), and manganese (Mn) to that of aluminum (Al) in the cell wall of epidermal cells of tea leaves were determined. The ratio of Si to Al X-ray yields agreed within a range of 11% in the four samples measured in this study. On the other hand, the ratio of the X-ray yields of K, Ca, and Mn to Al varied from 41% to 87%. This result suggests that Al forms compounds with Si in tea leaves.","PeriodicalId":14345,"journal":{"name":"International Journal of PIXE","volume":"37 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136316778","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-10-27DOI: 10.1142/s0129083523020011
Kunikazu Ishii
{"title":"Preface: Proceedings of the 36th Symposium on PIXE in Japan Nara, 26–27 November 2022","authors":"Kunikazu Ishii","doi":"10.1142/s0129083523020011","DOIUrl":"https://doi.org/10.1142/s0129083523020011","url":null,"abstract":"","PeriodicalId":14345,"journal":{"name":"International Journal of PIXE","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136317668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-25DOI: 10.1142/s0129083520500060
K. Sera, S. Goto, T. Hosokawa, Y. Saitoh, A. Terakawa, K. Ishii
In this paper, we measured more than 4200 beard samples collected from a single person every day over a 12-year period and analyzed them based on a standard-free method. It was found that the sulfur concentration remained almost constant from a long-term perspective but showed small periodic elevations. Silicone, phosphorus and rubidium showed significant periodic changes with a cycle of several years. While manganese, strontium and molybdenum seemed to show long-term changes, there were no significant differences due to their large standard deviations. Concerning seasonal changes, silicone and phosphorus showed decreasing trends in summer, albeit without significant differences. The bromine concentration showed clear seasonal variations, rising in winter and falling in summer, suggesting the possible influence of seasonal changes in the elemental components in the airborne particles that pass over to Japan from the Asian Continent. These findings confirmed that beard analyses are useful not only for evaluating changes in trace element concentrations in the human body but also for clarifying the main pathways of the intake of these elements.
{"title":"Long-term and season-specific changes in the concentrations of trace elements and sulfur in a human body over twelve years by means of quantitative analyses of beard samples collected every day — A case study","authors":"K. Sera, S. Goto, T. Hosokawa, Y. Saitoh, A. Terakawa, K. Ishii","doi":"10.1142/s0129083520500060","DOIUrl":"https://doi.org/10.1142/s0129083520500060","url":null,"abstract":"In this paper, we measured more than 4200 beard samples collected from a single person every day over a 12-year period and analyzed them based on a standard-free method. It was found that the sulfur concentration remained almost constant from a long-term perspective but showed small periodic elevations. Silicone, phosphorus and rubidium showed significant periodic changes with a cycle of several years. While manganese, strontium and molybdenum seemed to show long-term changes, there were no significant differences due to their large standard deviations. Concerning seasonal changes, silicone and phosphorus showed decreasing trends in summer, albeit without significant differences. The bromine concentration showed clear seasonal variations, rising in winter and falling in summer, suggesting the possible influence of seasonal changes in the elemental components in the airborne particles that pass over to Japan from the Asian Continent. These findings confirmed that beard analyses are useful not only for evaluating changes in trace element concentrations in the human body but also for clarifying the main pathways of the intake of these elements.","PeriodicalId":14345,"journal":{"name":"International Journal of PIXE","volume":"94 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83902021","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-25DOI: 10.1142/s0129083520500072
K. Hitomi, M. Nogami, A. Terakawa, K. Ishii
A thallium bromide (TlBr) gamma-ray detector was developed for particle-induced gamma-ray emission (PIGE) applications. The PIGE spectrum of a lithium fluoride (LiF) crystal was obtained for the first time using the TlBr detector. This detector was fabricated using a zone-purified crystal with dimensions of approximately [Formula: see text]. An energy resolution of 2.3% full-width at half maximum for 511 keV gamma rays was obtained from the detector at room temperature. The LiF crystal target was irradiated with a 20 MeV proton beam at the Aomori Prefecture Quantum Science Center. Full-energy peaks of 478 keV and 197 keV were successfully detected from lithium and fluorine, respectively, using the TlBr detector in the PIGE experiment.
{"title":"Development of thallium bromide semiconductor detectors for particle-induced gamma-ray emission","authors":"K. Hitomi, M. Nogami, A. Terakawa, K. Ishii","doi":"10.1142/s0129083520500072","DOIUrl":"https://doi.org/10.1142/s0129083520500072","url":null,"abstract":"A thallium bromide (TlBr) gamma-ray detector was developed for particle-induced gamma-ray emission (PIGE) applications. The PIGE spectrum of a lithium fluoride (LiF) crystal was obtained for the first time using the TlBr detector. This detector was fabricated using a zone-purified crystal with dimensions of approximately [Formula: see text]. An energy resolution of 2.3% full-width at half maximum for 511 keV gamma rays was obtained from the detector at room temperature. The LiF crystal target was irradiated with a 20 MeV proton beam at the Aomori Prefecture Quantum Science Center. Full-energy peaks of 478 keV and 197 keV were successfully detected from lithium and fluorine, respectively, using the TlBr detector in the PIGE experiment.","PeriodicalId":14345,"journal":{"name":"International Journal of PIXE","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73422654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-25DOI: 10.1142/s0129083520500084
H. Arai, K. Ishii
We subjected [Formula: see text]Cs-contaminated soil to stirring and particle classification to reduce the contaminated soil volume. [Formula: see text]Cs activity as a function of particle diameter changed drastically as the weight ratio of soil/water varied; 85% of all [Formula: see text]Cs was adsorbed to particles of minimum diameter after stirring. Soil argillites (smectites, vermiculites, and illites) adsorbed [Formula: see text]Cs. We used X-ray diffraction (XRD) analysis to measure the soil contents; the [Formula: see text]Cs distribution as a function of soil particle diameter mirrored the smectite levels revealed by the XRD peak intensities. Thus, smectic was the main absorbent of [Formula: see text]Cs.
{"title":"Analysis of soil aggregates contaminated by 137Cs via particle size classification and X-ray diffraction","authors":"H. Arai, K. Ishii","doi":"10.1142/s0129083520500084","DOIUrl":"https://doi.org/10.1142/s0129083520500084","url":null,"abstract":"We subjected [Formula: see text]Cs-contaminated soil to stirring and particle classification to reduce the contaminated soil volume. [Formula: see text]Cs activity as a function of particle diameter changed drastically as the weight ratio of soil/water varied; 85% of all [Formula: see text]Cs was adsorbed to particles of minimum diameter after stirring. Soil argillites (smectites, vermiculites, and illites) adsorbed [Formula: see text]Cs. We used X-ray diffraction (XRD) analysis to measure the soil contents; the [Formula: see text]Cs distribution as a function of soil particle diameter mirrored the smectite levels revealed by the XRD peak intensities. Thus, smectic was the main absorbent of [Formula: see text]Cs.","PeriodicalId":14345,"journal":{"name":"International Journal of PIXE","volume":"2013 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73538510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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