| 摘要: |
| 目的:尝试使用色度学原理技术进行液体辐射变色剂量学研究。方法:配制500、250和150 mg/ L不同浓度的酸性湖蓝A试剂水溶液,常温下进行1.5～13.5 kGy不同剂量的γ射线照射,照后即刻使用三基色色度测试装置,测定记录采集样品的三基色色量值变化,进行统计学处理,分析绘图,并进行平行样品重复测试。在夏季室温条件下存放两周后重复上述操作,配对t检验进行统计学分析。结果:随着试剂浓度及照射剂量的改变,红绿蓝三基色色度出现了明显的特征性变化,对于500 mg/L实验组来说,其中红色色度值随着辐射剂量增加而逐渐上升(80～360),蓝色色度值随着辐射剂量增加而逐渐下降(580～250),红蓝两色色度值呈明显的此消彼长关系,与红蓝两色相比较,绿色色度随辐射剂量变化的幅度较小(270～320)。尽管各实验组颜色变化趋势类似,但溶液浓度和照射剂量是决定能否获得理想三基色数据的主要因素,较低浓度溶液的颜色变化在较小辐射吸收剂量范围明显。将实验样品在夏季常温环境放置两周前后检测结果没有明显变化。结论:将电离辐射变色现象与色度分析技术结合,可能提供一种新的剂量学研究方法对辐射变色物质进行更方便的研究。 |
| 关键词: 色度 酸性湖蓝A 辐射吸收剂量 |
| DOI：10.3724/SP.J.1008.2009.01065 |
| 投稿时间：2009-03-17修订日期：2009-07-31 |
| 基金项目: |
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| Study on radiation dose based on chrominance |
| JIANG Hao,LI Zhi-heng,LI Yu* |
| (Department of Radiation,Faculty of Navy Medicine,Second Military Medical University,Shanghai 200433,China) |
| Abstract: |
| Objective:To set up a new measurement method for radiation absorbed dose by using chrominance technology.Methods: The changes of trichromatic values were measured using color analysis technique after different concentrations of alphaurine A aqueous solutions (500 mg/L,250 mg/L, and 150 mg/L) were irradiated with 1.5-13.5 kGy doses of γ-rays at room temperature.Immediately after irradiation,the trichromatic color testing device was used to determine the trichromatic color changes of the samples for further statistical processing,analysis,and mapping.Repeated measurements were obtained with the test samples.The samples was stored at room temperature of summer for two weeks and the above protocol was repeated.Paired t-test was used for statistical analysis.Results: The trichromatic red-green-blue color underwent evident changes with the changes of reagent concentrations and absorbed doses.There was a gradual increment of absorption value(80-360)of the red color with the increment of absorbed dose in 500 mg/L group; meanwhile,there was a decrement of absorption value(580-250)of blue color with the increment of absorbed dose,which showed that the changing trend of the red color and blue color was on contrary.Compared with the red and blue,the absorption value of green color underwent a slighter change(270-320)with the increment of absorbed doses.Despite a similar color change trend in all the experimental groups,the solution concentration and the radiation dose were the main factor for ideal trichromatic data.The change of color in the solution of lower concentration was greater within a smaller range of absorption dose.Temperature had little influence on the measuring results after the irradiated samples were kept for two weeks at the room temperature in the summer(P>0.05).Conclusion: Ionizing radiation-induced color change combined with chrominance technique may provide a new convenient method for studying radiation absorbed dose. |
| Key words: chrominance alphaurine A radiation absorbed dose |
