Distribution of Pu isotopes and 210Pb in the Bohai Sea and Yellow Sea: Implications for provenance and transportation

Wang, Jinlong; Du, Jinzhou; Qu, Jianhua; Bi, Qianqian

doi:10.1016/j.chemosphere.2020.127896

Cited by 5 publications

(5 citation statements)

References 66 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The total plutonium activity ( 239+240 Pu) measured was very consistent with the data obtained by the alpha spectroscopy, with the detection limits of 239 Pu and 240 Pu to be 5 and 1 fg·mL −1 , respectively. Wang et al [ 93 ] measured the activity of 239+240 Pu in the surface sediments of the Bohai Sea and the North Yellow Sea by the isotope dilution method to be 0.001–0.288 and 0.040–0.269 Bq·kg −1 , respectively. The atomic ratio of 240 Pu/ 239 Pu was 0.173–0.256 and 0.196–0.275, respectively, slightly higher than the global sedimentation value of 0.18.…”

Section: Measurement Methods Of 239 Pu 2...mentioning

confidence: 99%

Analytical Methods for the Determination of 90Sr and 239,240Pu in Environmental Samples

Zhong

Yang

et al. 2022

Molecules

View full text Add to dashboard Cite

Artificial long-lived radionuclides such as 90Sr and 239,240Pu have been long released into the environment by human nuclear activities, which have a profound impact on the ecological environment. It is of great significance to monitor the concentration of these radionuclides for environmental safety. This paper summarizes and critically discusses the separation and measurement methods for ultra-trace determination of 90Sr, 239Pu, and 240Pu in the environment. After selecting the measurement method, it is necessary to consider the decontamination of the interference from matrix elements and the key elements, and this involves the choice of the separation method. Measurement methods include both radiometric methods and non-radiometric methods. Radiometric methods, including alpha spectroscopy, liquid scintillation spectrometry, etc., are commonly used methods for measuring 239+240Pu and 90Sr. Mass spectrometry, as the representative of non-radiometric measurement methods, has been regarded as the most promising analytical method due to its high absolute sensitivity, low detection limit, and relatively short sample-analysis time. Through the comparison of various measurement methods, the future development trend of radionuclide measurement is prospected in this review. The fully automatic and rapid analysis method is a highlight. The new mass spectrometer with ultra-high sensitivity shows strong analytical capabilities for extremely low concentrations of 90Sr, 239Pu, and 240Pu, and it is expected to develop determination methods with higher sensitivity and lower detection limit.

show abstract

Section: Measurement Methods Of 239 Pu 2...mentioning

confidence: 99%

Analytical Methods for the Determination of 90Sr and 239,240Pu in Environmental Samples

Zhong

Yang

et al. 2022

Molecules

View full text Add to dashboard Cite

show abstract

“…Establishing a background database of plutonium activity and ratio in China's surrounding marine environment is particularly important. In recent years, a large number of literature reports have documented the activity and 240 Pu/ 239 Pu atom ratio in surface and core sediments in the China Sea, as shown in Figure 1 [127][128][129][130][131][132][133][134]. Huang et al [135] studied the spatial distribution and sources of 239 Pu and 240 Pu in surface sediments from 516 locations in the China Sea and adjacent seas.…”

Section: Global Fallout Plutonium For Environmental Applicationmentioning

confidence: 99%

Progress of the Analytical Methods and Application of Plutonium Isotopes in the Environment

et al. 2023

View full text Add to dashboard Cite

Since the beginning of the use of nuclear energy in the twentieth century, atmospheric nuclear weapons testing, nuclear accidents, and spent fuel reprocessing have released large amounts of radioisotopes into the environment, especially plutonium isotopes. As an important anthropogenic radionuclide, plutonium is mainly produced by neutron irradiation of uranium. Plutonium isotopes and their ratios from different sources have a specific ‘fingerprint’, which is determined by irradiation time and intensity. Accordingly, several methods have been developed for the analysis of plutonium isotopes. As a popular new tracer in recent years, plutonium isotopes could be used for environmental tracer applications and source identification of regional environmental contamination sources. This paper summarizes and compares the pretreatment of plutonium isotopes in various samples and the detection and analysis methods in recent years. Plutonium isotopes in various environmental samples were enriched by chemical treatments, such as ashing, acid digestion, and alkali fusion. Then it was purified and separated by extraction resins to remove interfering nuclides for the subsequent mass spectrometry. The practical applications of plutonium isotopes and their related ratios in the environment are summarized, such as the determination of plutonium isotopes and their related ratios in the environment near two representative nuclear power plant accidents and the monitoring of the safe operation of nuclear power plants; the establishment of a plutonium isotope database in the vicinity of Chinese waters; and the traceability of plutonium isotopes in environmental regions through the global atmosphere and sand and dust. Finally, the outlook for subsequent research in plutonium isotope detection and applications is presented.

show abstract

“…Zhuang et al (2019) [41] assigned a residence time of 3,000 years to the Haihe River catchment (321,000 km 2 ). [42] studied the plutonium inventory in the Bohai and Yellow seas and assigned residence times of 800, 1,500 and 4,100 years to the areas of the catchments <5,200, 5,200-78,000 and >78,000 km 2 . For the selection of the residence time, only approaches based on modelling or experimental data [38,40] were considered.…”

Section: Removal Time By Erosionmentioning

confidence: 99%

“…The migration of soil particles ensures the transport of plutonium from watersheds to bottom sediments in coastal regions and estuaries [5]. For example, the contribution of plutonium from the global fallout to the Yellow River has been estimated to be 21±7×10 9 Bq/yr, with an average plutonium inventory in soil of 57±25 Bq/m 2 [6]. The Vistula and Neman rivers were found to contribute 0.19×10 9 Bq/ year to the Gdansk Bay, and the total plutonium budget in sediments is 3.77×10 12 Bq [7].…”

Section: Introductionmentioning

confidence: 99%

Assessment of the input of particulate ^239,240Pu and ¹³⁷Cs from the Neman River into the Curonian Lagoon

Романенко¹,

Lujaniené²,

Šemčuk³

et al. 2023

physics

View full text Add to dashboard Cite

The Curonian Lagoon is a unique system that is a temporary reservoir of water, accumulating about 62% of the suspended solids in the river runoff. The average activity of plutonium in the suspended particulate matter in the water of the Neris River was 0.26±0.02 Bq/kg, and the activity of 137Cs ranged from 23±8 to 49±12 Bq/kg. The average 137Cs flux to the Curonian Lagoon in the particulate and dissolved species was estimated to be (78±61) × 109 Bq/year. Preliminary estimates indicate that the annual input of 239,240Pu from the Neman River into the Curonian Lagoon is about 0.9 GBq, of which 0.56 GBq accumulates in the sediment of the lagoon.

show abstract

Distribution of Pu isotopes and 210Pb in the Bohai Sea and Yellow Sea: Implications for provenance and transportation

Cited by 5 publications

References 66 publications

Analytical Methods for the Determination of 90Sr and 239,240Pu in Environmental Samples

Analytical Methods for the Determination of 90Sr and 239,240Pu in Environmental Samples

Progress of the Analytical Methods and Application of Plutonium Isotopes in the Environment

Assessment of the input of particulate ^239,240Pu and ¹³⁷Cs from the Neman River into the Curonian Lagoon

Contact Info

Product

Resources

About

Distribution of Pu isotopes and 210Pb in the Bohai Sea and Yellow Sea: Implications for provenance and transportation

Cited by 5 publications

References 66 publications

Analytical Methods for the Determination of 90Sr and 239,240Pu in Environmental Samples

Analytical Methods for the Determination of 90Sr and 239,240Pu in Environmental Samples

Progress of the Analytical Methods and Application of Plutonium Isotopes in the Environment

Assessment of the input of particulate 239,240Pu and 137Cs from the Neman River into the Curonian Lagoon

Contact Info

Product

Resources

About

Assessment of the input of particulate ^239,240Pu and ¹³⁷Cs from the Neman River into the Curonian Lagoon