Establishment and application of typical insect dose model in northwestern China
10.3760/cma.j.issn.0254-5098.2021.11.011
- VernacularTitle:西北地区陆生典型昆虫剂量学模型的建立及应用
- Author:
Wenjing GONG
1
;
Sheng ZHANG
;
Chao ZHANG
;
Jianguo LI
Author Information
1. 中国辐射防护研究院，太原 030006
- Keywords:
Damalacore;
Simplified anatomical model;
Voxel model;
Dose coefficients;
Dose rate
- From:
Chinese Journal of Radiological Medicine and Protection
2021;41(11):856-861
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To validate the feasibility of establishing a dosimetric model for insect species by investigating the ecological environment of an inland site in the northwestern China.Methods:For Damalacore, a simplified anatomical model based on anatomy and geometry and a model based on CT scan sequence image were established to produce a voxel model. In combination with the Monte Carlo particle transport process, the deposited energy of the radionuclides in the insect tissues/organs was obtained. The dose rate from 90Sr and 137Cs to Damalacore was calculated on the basis of empirical formula. Results:The dose rate from internal exposure to the simplified anatomical model was 8.58×10 -2for 90Sr and 4.25×10 -3μGy/h for 137Cs, whereas the dose rate from external exposure to the simplified anatomy model was 2.81×10 -2for 90Sr and 2.56×10 -1μGy/h for 137Cs, respectively. The internal exposure to the voxel model from 90Sr and 137Cs was 3.91×10 -2and 2.91×10 -3μGy/h, whereas the external exposure to the voxel model from 90Sr and 137Cs was 2.81×10 -2 and 2.56×10 -1μGy/h, respectively. The internal exposure from 90Sr and 137Cs to ERICA model was 1.46×10 -1 and 1.46×10 -2μGy/h, whereas the external exposure to the ERICA model from 90Sr and 137Cs was 5.79×10 -2 and 2.58×10 -1μGy/h, respectively. Conclusions:The calculated results based on the two models are similar to those based on ERICA model and therefore are proved reliable. With improved model accuracy, the calculated result are more close to the practical situation and feasible.
