Liquid dosimeter with sensitivity in low-kGy range for the characterization of a new module for EB wastewater treatment
Lotte Ligaya Schaap
Fraunhofer Institute for Electron Beam and Plasma Technology FEPDresden, Germany
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, Tobias Teichmann
Fraunhofer Institute for Electron Beam and Plasma Technology FEPDresden, Germany
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, , Joana Kira Besecke
Fraunhofer Institute for Electron Beam and Plasma Technology FEPDresden, Germany
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, Simone Schopf
Fraunhofer Institute for Electron Beam and Plasma Technology FEPDresden, Germany
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, and Elizabeth von Hauff
Fraunhofer Institute for Electron Beam and Plasma Technology FEPDresden, Germany
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Jun 25, 2024
About this article
Article Category: Original Paper
Published Online: Jun 25, 2024
Page range: 75 - 80
Received: Nov 15, 2023
Accepted: Apr 03, 2024
DOI: https://doi.org/10.2478/nuka-2024-0010
Keywords
© 2024 Lotte Ligaya Schaap et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
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Fig. 4.
![Absorbance spectra of Roselle dosimeter at different doses (left) and absorbance spectra from Handayani and Imawan [9] (right).](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/667ab072dd1c3d1f8713e9a5/j_nuka-2024-0010_fig_004.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20250910%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20250910T111657Z&X-Amz-Expires=3600&X-Amz-Signature=13391a9a5ad438f96db5fde0d0bbfa2f8493844a34177e847e4d36124f4d1325&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
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Fig. 6.
Relative change in peak absorbance of Roselle dosimeter solution at set time intervals_ Negative values indicate a decrease in peak absorbance
| Dose (kGy) | Peak absorbance | Relative change in peak absorbance (%) | |||||
|---|---|---|---|---|---|---|---|
| 10 min | 20 min | 30 min | 40 min | 1 h | 96 h | ||
| 0 | 3.74 | 0.6 | 3.9 | 4.1 | –0.3 | –1.1 | –68.8 |
| 0.3 | 2.93 | –0.5 | –1.5 | –2.2 | –2.9 | –8.3 | –53.9 |
| 0.9 | 2.61 | –1.3 | –2.2 | –3.1 | –9.5 | –9.5 | –55.6 |
| 1.8 | 1.20 | –0.7 | –0.7 | –1.5 | –1.9 | –12.1 | –59.1 |
| 3.8 | 1.05 | 0.9 | 2.4 | 4.3 | 5.5 | 5.3 | –3.2 |
| 7.5 | 0.51 | 5.0 | 10.6 | 15.9 | 21.0 | 42.1 | 21.4 |