Activity Concentrations of Sr-90 and Cs-137 in Seawater and Sediment in the Gulf of Tonkin, Vietnam
In this study, we measured the activity concentrations of Cs-137 and Sr-90 in surface seawater and surface sediments at the Tra Co, Bach Long Vi, and Ky Anh locations in the Gulf of Tonkin, Vietnam, from December 2018 to October 2019. The average activity at the selected locations was 1.22, 1.43, an...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2020/8752606 |
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| author | Trong-Ngo Nguyen Quang-Thien Tran Van-Phuc Nguyen Nhu-Sieu Le Son-Hai Phan Xuan-Thang Le Thi-Thu-Hang Vuong Van-Phu Nguyen Đinh-Tung Nguyen Đinh-Khoa Tran Minh-Đao Nguyen Quang-Trung Phan Thi-Mong-Tham Vo Van-Thang Duong Ngoc-Chung Le |
| author_facet | Trong-Ngo Nguyen Quang-Thien Tran Van-Phuc Nguyen Nhu-Sieu Le Son-Hai Phan Xuan-Thang Le Thi-Thu-Hang Vuong Van-Phu Nguyen Đinh-Tung Nguyen Đinh-Khoa Tran Minh-Đao Nguyen Quang-Trung Phan Thi-Mong-Tham Vo Van-Thang Duong Ngoc-Chung Le |
| author_sort | Trong-Ngo Nguyen |
| collection | DOAJ |
| description | In this study, we measured the activity concentrations of Cs-137 and Sr-90 in surface seawater and surface sediments at the Tra Co, Bach Long Vi, and Ky Anh locations in the Gulf of Tonkin, Vietnam, from December 2018 to October 2019. The average activity at the selected locations was 1.22, 1.43, and 1.33 Bq/m3 for Cs-137 and 0.88, 1.17, and 1.09 Bq/m3 for Sr-90 in surface seawater samples and 0.74, 1.01, and 0.81 Bq/kg dry for Cs-137 and 0.49, 0.49, and 0.43 Bq/kg dry for Sr-90 in sediment samples. The ratio of the average activity concentration (Cs-137/Sr-90) in the surface seawater was 1.42, 1.22, and 1.22 at the Tra Co, Bach Long Vi, and Ky Anh locations, respectively. These are somewhat low compared to the global ratios (1.6 and 1.8). Meanwhile, Cs-137/Sr-90 ratios in the sediment samples at the selected locations were 1.51, 2.06, and 1.88, respectively, which is equal to or greater than the corresponding value for global sedimentation according to the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR). Correlations between Sr-90, Cs-137, and organic carbon content were detected in this study. The results showed that Cs-137 has a high correlation with the organic carbon content in sediment, while Sr-90 has a low correlation. |
| format | Article |
| id | doaj-art-c1de8181c3e44d939d40d14170f8f11b |
| institution | Kabale University |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-c1de8181c3e44d939d40d14170f8f11b2025-02-03T01:27:54ZengWileyJournal of Chemistry2090-90632090-90712020-01-01202010.1155/2020/87526068752606Activity Concentrations of Sr-90 and Cs-137 in Seawater and Sediment in the Gulf of Tonkin, VietnamTrong-Ngo Nguyen0Quang-Thien Tran1Van-Phuc Nguyen2Nhu-Sieu Le3Son-Hai Phan4Xuan-Thang Le5Thi-Thu-Hang Vuong6Van-Phu Nguyen7Đinh-Tung Nguyen8Đinh-Khoa Tran9Minh-Đao Nguyen10Quang-Trung Phan11Thi-Mong-Tham Vo12Van-Thang Duong13Ngoc-Chung Le14Dalat Nuclear Research Institute, Dalat, VietnamDalat Nuclear Research Institute, Dalat, VietnamDalat Nuclear Research Institute, Dalat, VietnamDalat Nuclear Research Institute, Dalat, VietnamDalat Nuclear Research Institute, Dalat, VietnamDalat Nuclear Research Institute, Dalat, VietnamDalat Nuclear Research Institute, Dalat, VietnamDalat Nuclear Research Institute, Dalat, VietnamDalat Nuclear Research Institute, Dalat, VietnamDalat Nuclear Research Institute, Dalat, VietnamDalat Nuclear Research Institute, Dalat, VietnamDalat Nuclear Research Institute, Dalat, VietnamDalat Nuclear Research Institute, Dalat, VietnamInstitute for Nuclear Science and Technology, Hanoi, VietnamUniversity of Dalat, Dalat, VietnamIn this study, we measured the activity concentrations of Cs-137 and Sr-90 in surface seawater and surface sediments at the Tra Co, Bach Long Vi, and Ky Anh locations in the Gulf of Tonkin, Vietnam, from December 2018 to October 2019. The average activity at the selected locations was 1.22, 1.43, and 1.33 Bq/m3 for Cs-137 and 0.88, 1.17, and 1.09 Bq/m3 for Sr-90 in surface seawater samples and 0.74, 1.01, and 0.81 Bq/kg dry for Cs-137 and 0.49, 0.49, and 0.43 Bq/kg dry for Sr-90 in sediment samples. The ratio of the average activity concentration (Cs-137/Sr-90) in the surface seawater was 1.42, 1.22, and 1.22 at the Tra Co, Bach Long Vi, and Ky Anh locations, respectively. These are somewhat low compared to the global ratios (1.6 and 1.8). Meanwhile, Cs-137/Sr-90 ratios in the sediment samples at the selected locations were 1.51, 2.06, and 1.88, respectively, which is equal to or greater than the corresponding value for global sedimentation according to the United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR). Correlations between Sr-90, Cs-137, and organic carbon content were detected in this study. The results showed that Cs-137 has a high correlation with the organic carbon content in sediment, while Sr-90 has a low correlation.http://dx.doi.org/10.1155/2020/8752606 |
| spellingShingle | Trong-Ngo Nguyen Quang-Thien Tran Van-Phuc Nguyen Nhu-Sieu Le Son-Hai Phan Xuan-Thang Le Thi-Thu-Hang Vuong Van-Phu Nguyen Đinh-Tung Nguyen Đinh-Khoa Tran Minh-Đao Nguyen Quang-Trung Phan Thi-Mong-Tham Vo Van-Thang Duong Ngoc-Chung Le Activity Concentrations of Sr-90 and Cs-137 in Seawater and Sediment in the Gulf of Tonkin, Vietnam Journal of Chemistry |
| title | Activity Concentrations of Sr-90 and Cs-137 in Seawater and Sediment in the Gulf of Tonkin, Vietnam |
| title_full | Activity Concentrations of Sr-90 and Cs-137 in Seawater and Sediment in the Gulf of Tonkin, Vietnam |
| title_fullStr | Activity Concentrations of Sr-90 and Cs-137 in Seawater and Sediment in the Gulf of Tonkin, Vietnam |
| title_full_unstemmed | Activity Concentrations of Sr-90 and Cs-137 in Seawater and Sediment in the Gulf of Tonkin, Vietnam |
| title_short | Activity Concentrations of Sr-90 and Cs-137 in Seawater and Sediment in the Gulf of Tonkin, Vietnam |
| title_sort | activity concentrations of sr 90 and cs 137 in seawater and sediment in the gulf of tonkin vietnam |
| url | http://dx.doi.org/10.1155/2020/8752606 |
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