![Absorption spectra measured during electrochemical oxidation from Pu(III) to Pu(IV) in 1 M HClO4 solution ([Pu] = 0.171 mM).](https://nrms.kisti.re.kr/bitextimages/TRKO201800009453/TRKO201800009453_94_image_1.png "Absorption spectra measured during electrochemical oxidation from Pu(III) to Pu(IV) in 1 M HClO4 solution ([Pu] = 0.171 mM).")
![Species distribution of europium hydrolysis species at [Eu] = 0.02 mM from pH 5 to pH 12](https://nrms.kisti.re.kr/bitextimages/TRKO201800009453/TRKO201800009453_121_image_1.png "Species distribution of europium hydrolysis species at [Eu] = 0.02 mM from pH 5 to pH 12")
![Solubility products for Eu(III), Am/Cm(III) and Pu(III) hydroxide. *Ks,0 = [H+]3/[M(III)aq](1+Σ*βn/[H+]n).](https://nrms.kisti.re.kr/bitextimages/TRKO201800009453/TRKO201800009453_122_table_1.png "Solubility products for Eu(III), Am/Cm(III) and Pu(III) hydroxide. *Ks,0 = [H+]3/[M(III)aq](1+Σ*βn/[H+]n).")
![Absorption spectra (top) and BD probability as a function of laser pulse energy (bottom) measured during electrolytic reduction ([Pu] = 0.5 mM).](https://nrms.kisti.re.kr/bitextimages/TRKO201800009453/TRKO201800009453_128_image_1.png "Absorption spectra (top) and BD probability as a function of laser pulse energy (bottom) measured during electrolytic reduction ([Pu] = 0.5 mM).")
![Breakdown probability measured at laser pulse energy of 0.2 mJ for plutonium samples as a function of pHs. [Pu] =0.5 mM (left) and 0.1 mM (right).](https://nrms.kisti.re.kr/bitextimages/TRKO201800009453/TRKO201800009453_131_image_1.png "Breakdown probability measured at laser pulse energy of 0.2 mJ for plutonium samples as a function of pHs. [Pu] =0.5 mM (left) and 0.1 mM (right).")
![2-D distributions of 2000 breakdown events of plutonium hydroxide nanoparticles at pH 5.74 (1), pH 6.17 (2) and pH 6.40 (3) ([Pu] = 0.5 mM) are measured by LIBD.](https://nrms.kisti.re.kr/bitextimages/TRKO201800009453/TRKO201800009453_134_image_1.png "2-D distributions of 2000 breakdown events of plutonium hydroxide nanoparticles at pH 5.74 (1), pH 6.17 (2) and pH 6.40 (3) ([Pu] = 0.5 mM) are measured by LIBD.")
![Absorption spectra of an aqueous U(VI)-TSal solution([U(VI)] = 10 μM, I = 0.1 M) by varying the TSal concentration at a fixed pH 5.3 using a LWCC system](https://nrms.kisti.re.kr/bitextimages/TRKO201800009453/TRKO201800009453_142_image_1.png "Absorption spectra of an aqueous U(VI)-TSal solution([U(VI)] = 10 μM, I = 0.1 M) by varying the TSal concentration at a fixed pH 5.3 using a LWCC system")
![(a) LM quenching effects of various reagents, including carbonate(Carb), lactate (Lac), Cys and AA, in terms of LM lifetime changes. The lifetime (τ) measured using TRLFS is displayed as a ratio, τ/τ0, where τ0 is the lifetime obtained with reagent-free LEA solutions. A, B and C denote reagent concentrations of 0.01, 0.1 and 1.0 mM, respectively. (b) Stern-Volmer plots for Cys based on the LM lifetime (τ) and intensity (I) at various Cys concentrations at room temperature. I0 is the LM intensity obtained with a Cys-free solution ([U(VI)] = 20μM, I = 0.1 M).](https://nrms.kisti.re.kr/bitextimages/TRKO201800009453/TRKO201800009453_162_image_1.png "(a) LM quenching effects of various reagents, including carbonate(Carb), lactate (Lac), Cys and AA, in terms of LM lifetime changes. The lifetime (τ) measured using TRLFS is displayed as a ratio, τ/τ0, where τ0 is the lifetime obtained with reagent-free LEA solutions. A, B and C denote reagent concentrations of 0.01, 0.1 and 1.0 mM, respectively. (b) Stern-Volmer plots for Cys based on the LM lifetime (τ) and intensity (I) at various Cys concentrations at room temperature. I0 is the LM intensity obtained with a Cys-free solution ([U(VI)] = 20μM, I = 0.1 M).")
![Comparison of two sets of [U(IV)] measurement resultsdissolved obtained independently using two analytical methods](https://nrms.kisti.re.kr/bitextimages/TRKO201800009453/TRKO201800009453_181_image_1.png "Comparison of two sets of [U(IV)] measurement resultsdissolved obtained independently using two analytical methods")
![Long-term monitoring of [U] and [U(IV)] in filteredtotal dissolved samples periodically collected from a bacterial (Desulfovibrio desulfuricans) culture.](https://nrms.kisti.re.kr/bitextimages/TRKO201800009453/TRKO201800009453_183_image_1.png "Long-term monitoring of [U] and [U(IV)] in filteredtotal dissolved samples periodically collected from a bacterial (Desulfovibrio desulfuricans) culture.")
![Comparison of two sets of [U] measurement results obtainedtotal independently for the samples in Fig. 3-3-14 using two analytical methods](https://nrms.kisti.re.kr/bitextimages/TRKO201800009453/TRKO201800009453_184_image_1.png "Comparison of two sets of [U] measurement results obtainedtotal independently for the samples in Fig. 3-3-14 using two analytical methods")
![Change of absorption spectra of U(IV) depending on pH from 2.85 to 0.66 by titrating perchloric acid ([U]Iinitial = 0.1 M) at room temperature.](https://nrms.kisti.re.kr/bitextimages/TRKO201800009453/TRKO201800009453_192_image_1.png "Change of absorption spectra of U(IV) depending on pH from 2.85 to 0.66 by titrating perchloric acid ([U]Iinitial = 0.1 M) at room temperature.")
![Change of absorption spectra of U(IV) depending on pH from 2.26 to -0.55 by titrating perchloric acid ([U]Iinitial = 0.1 M) at room temperature.](https://nrms.kisti.re.kr/bitextimages/TRKO201800009453/TRKO201800009453_194_image_1.png "Change of absorption spectra of U(IV) depending on pH from 2.26 to -0.55 by titrating perchloric acid ([U]Iinitial = 0.1 M) at room temperature.")
![Dissolved U(IV) concentrations in filtrate solutions (0.2 μm pore size) after 4-day storage under an anaerobic (Ar) condition; measured using ICP-AES analysis at different U(IV):Ox ratios ([U(IV)] = 0.7 mM, I = 0.1 M, NaClO4) at room temperature.](https://nrms.kisti.re.kr/bitextimages/TRKO201800009453/TRKO201800009453_203_image_1.png "Dissolved U(IV) concentrations in filtrate solutions (0.2 μm pore size) after 4-day storage under an anaerobic (Ar) condition; measured using ICP-AES analysis at different U(IV):Ox ratios ([U(IV)] = 0.7 mM, I = 0.1 M, NaClO4) at room temperature.")
![Bold and thin lines represent the normalized luminescence spectra of the reference solution [U(VI) concentration of 5 μg/L in a mixed sulfate solution] and the GW2 groundwater sample pretreated with K2S2O8, respectively](https://nrms.kisti.re.kr/bitextimages/TRKO201800009453/TRKO201800009453_311_image_1.png "Bold and thin lines represent the normalized luminescence spectra of the reference solution [U(VI) concentration of 5 μg/L in a mixed sulfate solution] and the GW2 groundwater sample pretreated with K2S2O8, respectively")
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| 주관연구기관 | 한국원자력연구원 Korea Atomic Energy Research Institute |
|---|---|
| 연구책임자 | 정의창 |
| 참여연구자 | 차완식 , 조혜륜 , 박경균 , 김선태 , 김원호 , 김종구 , 손세철 , 연제원 , 임희정 , 임상호 , 조영환 , 하영경 , 오승용 , 김광욱 , 백민훈 , 임권 , 송규석 |
| 보고서유형 | 1단계보고서 |
| 발행국가 | 대한민국 |
| 언어 | 한국어 |
| 발행년월 | 2015-04 |
| 과제시작연도 | 2014 |
| 주관부처 | 미래창조과학부 Ministry of Science, ICT and Future Planning |
| 등록번호 | TRKO201800009453 |
| 과제고유번호 | 1711011809 |
| 사업명 | 원자력기술개발사업 |
| DB 구축일자 | 2018-05-26 |
| 키워드 | 악티나이드 원소.레이저 분광학.화학종 규명.시간분해 레이저 형광 분광학.레이저 광음향 분광학.레이저 유도 파열 검출.콜로이드 나노입자.용해도.착물.흡착.Actinide elements.Laser spectroscopy.Chemical speciation.TRLFS.LPAS.LIBD.Colloidal nanoparticles.Solubility.Complex.Adsorption. |
| DOI | https://doi.org/10.23000/TRKO201800009453 |
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