眼暴露与环境紫外辐射光谱差异性研究

发布时间：2018-04-27 19:21

本文选题：眼 + 环境　；参考：《中国公共卫生》2017年09期

【摘要】：目的探讨眼部暴露与环境紫外辐射光谱的差异性,为指导公众正确防护眼部紫外线损伤提供依据。方法使用自制的安装有高紫外灵敏度光纤光谱仪的眼紫外线暴露模型在中国海南省三亚地区进行实地监测,获得大量眼部暴露和环境紫外辐射光谱数据。眼部紫外辐射光谱数据与角膜损伤、结膜损伤、晶体损伤作用光谱相加权,计算对应的生物有效强度,再与时间相加权计算紫外辐射剂量。结果环境紫外辐射随日间时间推移呈单峰分布,峰值出现在13:00左右,而眼部暴露紫外辐射随日间时间推移呈双峰分布,峰值分别出现在10:00和16:00左右;不同波长光谱分布分析显示,随波长增加环境与眼暴露紫外辐射强度增加。环境400nm正午峰值约为161.51μwcm~(-2)nm~(-1),眼部400nm上、下午峰值分别约为65.43和66.20μw cm~(-2)nm~(-1)。而眼角膜、结膜和晶体损伤光谱强度分别在311、300和307 nm出现峰值,10:00辐射强度值高于其他时间点,峰值分别约为0.300 0、0.004 6和0.440 0μwcm~(-2)nm~(-1)。结论眼部暴露与环境紫外辐射光谱分布不同。
[Abstract]:Objective to explore the difference of ultraviolet spectrum between eye exposure and environmental ultraviolet radiation, and to provide evidence for public protection. Methods A self-made optical fiber spectrometer with high ultraviolet sensitivity was used to monitor the ultraviolet exposure of eyes in Sanya, Hainan Province, China, and a large number of spectral data of eye exposure and environmental ultraviolet radiation were obtained. The ultraviolet radiation spectra were weighted to corneal injury, conjunctiva injury and lens injury spectrum to calculate the corresponding bioavailability intensity, and then weighted with time to calculate the ultraviolet radiation dose. Results the environmental ultraviolet radiation showed a single peak distribution with the passage of time during the day, and the peak value appeared at about 13:00, while the ultraviolet radiation of eye exposure showed a double peak distribution with the passage of time between the days, the peak value appeared at 10:00 and 16:00, respectively. The spectral distribution analysis of different wavelengths showed that the ultraviolet radiation intensity increased with the increase of wavelength. The noonday peak value of environmental 400nm was about 161.51 渭 wcm ~ (-1) and the peak value of eye 400nm was 65.43 and 66.20 渭 w 路cm ~ (-2) ~ (-1) ~ (-1) in the afternoon, respectively, and the peak value was 65.43 渭 w 路cm ~ (-1) and 66.20 渭 w 路min ~ (-1) 路min ~ (-1) respectively. However, the peak radiation intensity of corneal, conjunctiva and lens injury was 10: 00 at 311300 nm and 307nm, respectively, which was higher than that at other time points, and the peak values were about 0.300 0 渭 wcm6 and 0.440 0 渭 wcm-1, respectively. Conclusion the spectrum distribution of eye exposure is different from that of environmental ultraviolet radiation.
【作者单位】：中国医科大学公共卫生学院环境卫生教研室;中国医科大学附属第四医院;
【基金】：国家自然科学基金(81273034)
【分类号】：R122.25

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