Calibration of tritium enrichment factor in solid-polymer electrolyte device based on correlation between deuterium and tritium

Chenxu WANG; Xiaochong XUE; Jiayu LIU; Youshi ZENG; Ke DENG; Qin ZHANG; Lixiao ZHU; Wei LIU; Lixin GE

doi:10.11889/j.0253-3219.2024.hjs.47.040404

NUCLEAR TECHNIQUES, Volume. 47, Issue 4, 040404(2024)

Calibration of tritium enrichment factor in solid-polymer electrolyte device based on correlation between deuterium and tritium

Chenxu WANG^1,2, Xiaochong XUE^1、*, Jiayu LIU³, Youshi ZENG¹, Ke DENG¹, Qin ZHANG¹, Lixiao ZHU¹, Wei LIU^1,2, and Lixin GE^4、**

Author Affiliations

¹Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China

²University of Chinese Academy of Sciences, Beijing 100049, China

³Shanghai Institute of Measurement and Testing Technology, Shanghai 201203, China

⁴Shanghai Radiation Environmental Safety Technology Center, Shanghai 200065, China

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Figures & Tables(6)

Fig. 1. Schematic of solid-polymer electrolysis tritium enrichment system

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Fig. 2. k-values and separation coefficients of four types of graphene combined with electrode materials^[22]

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Table 1. k-values among different SPE cells

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Table 1. k-values among different SPE cells

No.	a-1	a-2	a-3	b-1	b-2	b-3	c-1	c-2	c-3
$m_{i}$ / g	500.2	500.1	500.1	500.3	500.2	500.2	500.4	499.8	499.8
$m_{f}$ / g	19.3	18.8	18.9	20.8	19.7	20.1	19.5	18.2	18.1
$d_{i}$ / 10^-6	148.6 ± 0.1	148.2 ± 0.1	148.2 ± 0.1	148.3 ± 0.1	148.2 ± 0.1	148.1 ± 0.1	147.8 ± 0.1	146.6 ± 0.1	146.6 ± 0.1
$d_{f}$ / 10^-6	1 738.3 ± 0.8	1 760.2 ± 3.9	1 747.2 ± 0.5	1 587.7 ± 0.5	1 658.5 ± 2.0	1 633.1 ± 7.7	1 543.8 ± 4.4	1 620.1 ± 0.7	1 728.3 ± 1.9
$t_{i}$ / Bq∙L^-1	188.1 ± 4.0	174.6 ± 3.6	187.0 ± 3.6	177.2 ± 6.9	178.5 ± 4.8	188.4 ± 4.3	185.3 ± 3.4	282.0 ± 6.0	282.0 ± 6.0
$t_{f}$ / Bq∙L^-1	2 675.9 ±13.6	2 623.0 ±13.4	2 729.6 ±18.6	2 268.8 ±21.8	2 521.2 ±16.1	2 567.0 ±22.5	2 459.9 ±25.4	3 966.4 ±16.2	4 011.1 ±24.3
$E_{d}$	11.70	11.87	11.79	10.70	11.19	11.02	10.44	11.05	11.79
$E_{t}$	14.23	15.02	14.59	12.80	14.12	13.63	13.28	14.06	14.22
k值 k-value	1.079 6	1.094 9	1.086 4	1.075 7	1.096 4	1.088 4	1.102 4	1.100 3	1.076 0
$\bar{E_{t}}$	14.61±0.40			13.52±0.66			13.85±0.47
$\bar{k}$	1.087±0.008			1.087±0.010			1.093±0.013
总 $\bar{E_{t}}$ Overall $\bar{E_{t}}$	14.00
总 $\bar{k}$ Overall $\bar{k}$	1.088 9
$\bar{E_{t}}$ 变异系数 $\bar{E_{t}}$ C.V	4.52%
$\bar{k}$ 变异系数 $\bar{k}$ C.V	0.89%

Table 2. Comparison between tritium enrichment factors derived using DM and SPM methods
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Table 2. Comparison between tritium enrichment factors derived using DM and SPM methods
No. SPM DM
$E_{t}$ $\bar{E_{t}}$ $|\bar{E_{t}} - E_{t}| / E_{t}$ $E_{d}$ $\bar{k}$ $E_{t}^{k}$ $|E_{t}^{k} - E_{t}| / E_{t}$
槽a Cell a 14.61 14.00 4.20% 11.79 1.088 9 14.68 0.45%
槽b Cell b 13.52 14.00 3.56% 10.97 1.088 9 13.58 0.43%
槽c Cell c 13.85 14.00 1.05% 11.09 1.088 9 13.74 0.82%

Table 3. k-values for different initial water weights and electrode materials

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Table 3. k-values for different initial water weights and electrode materials

No.	a-1	a-2	a-3	a-4	a-5	a-6	a-7	d-1	d-2	d-3
$m_{i}$ / g	500.2	500.1	500.1	250.4	250.4	250.3	250.3	401.5	405.8	410.9
$m_{f}$ / g	19.3	18.8	18.9	23.2	23.2	23.0	23.0	39.6	39.8	44.0
$E_{d}$	11.70	11.87	11.79	5.78	5.79	5.93	5.85	4.90	5.10	4.81
$E_{t}$	14.23	15.02	14.59	6.88	6.87	6.80	6.78	6.37	6.61	6.07
k值k-value	1.079 6	1.094 9	1.086 4	1.099 6	1.097 9	1.077 0	1.083 0	1.165 6	1.159 4	1.148 8
$\bar{k}$	1.087 0			1.089 4				1.157 9
$\bar{k}$ 变异系数 $\bar{k}$ C.V	0.58%			0.89%				0.60%

Table 4. Results for low tritium content in water sample using cell a

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Table 4. Results for low tritium content in water sample using cell a

No.	$m_{i}$ / g	$m_{f}$ / g	$t_{f}$ / Bq∙L^-1	$E_{d}$	$E_{t}^{k}$	$t_{i}^{E_{t}}$ / Bq∙L^-1	$t_{i}^{k}$ / Bq∙L^-1	$\|t_{i}^{k} - t_{i}^{E_{t}}\| / t_{i}^{E_{t}}$
平均值Mean value						0.68	0.70	2.11%
S-1	500.5	19.7	9.71	11.46	14.23	0.66	0.68	2.69%
S-2	500.9	20.1	9.57	11.45	14.22	0.65	0.67	2.74%
S-3	500.4	19.4	10.56	11.63	14.46	0.72	0.73	1.02%

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Chenxu WANG, Xiaochong XUE, Jiayu LIU, Youshi ZENG, Ke DENG, Qin ZHANG, Lixiao ZHU, Wei LIU, Lixin GE. Calibration of tritium enrichment factor in solid-polymer electrolyte device based on correlation between deuterium and tritium[J]. NUCLEAR TECHNIQUES, 2024, 47(4): 040404

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