西昌和绍兴眼紫外线暴露强度差异比较

发布时间：2018-02-04 20:33

本文关键词： 海拔眼紫外线暴露强度　出处：《中国公共卫生》2017年04期 　论文类型：期刊论文

【摘要】：目的了解不同海拔的西昌和绍兴地区眼紫外线暴露强度的日间分布及随太阳高度角变化的差异。方法采用自行研制的眼紫外线暴露模型,在晴好天气下,分别在西昌和绍兴地区进行监测。监测的数据运用Ava Soft 7.4 for USB2软件和Origin Pro 8软件进行数据处理和分析。结果最大暴露状态下,西昌和绍兴地区眼紫外线A段(UVA)和紫外线B段(UVB)日间分布均呈双峰型,峰值UVA分别为2 181.91μW/cm~2和2 003.6μW/cm~2;UVB分别为117.2μW/cm~2和72μW/cm~2;眼部和环境暴露比表明,在最大暴露状态下,西昌和绍兴地区UVA基本相近,分别为0.79和0.80,而UVB西昌大于绍兴,分别为0.68和0.55。结论西昌和绍兴地区眼部UVA与UVB最大暴露强度的日间变化呈双峰型分布;相同太阳高度角下,眼部UVB暴露强度西昌高于绍兴,眼部UVB与环境UVB暴露比西昌亦大于绍兴。
[Abstract]:Objective to investigate the diurnal distribution of ultraviolet exposure intensity and the variation of ultraviolet exposure with solar height in Xichang and Shaoxing areas at different elevations. Data were monitored in Xichang and Shaoxing, respectively. The data were monitored by Ava Soft 7.4 for USB2 and Origin Pro. 8 the data were processed and analyzed by the software. In Xichang and Shaoxing areas, the distribution of UVA and UVB in the eye showed a double peak pattern. The peak UVA was 2 181.91 渭 W / cm ~ (2) and 2 003.6 渭 W / cm ~ (2) respectively. The UVB was 117.2 渭 W / cm ~ (2) and 72 渭 W / cm ~ (2), respectively. The ratio of eye and environment exposure showed that the UVA of Xichang and Shaoxing was similar to that of Shaoxing under the maximum exposure condition (0.79 and 0.80, respectively), while the UVB of Xichang was larger than that of Shaoxing. Conclusion in Xichang and Shaoxing areas, the diurnal variation of maximum exposure intensity of UVA and UVB in the eye is a bimodal distribution. At the same solar height angle, the exposure intensity of eye UVB was higher in Xichang than in Shaoxing, and the ratio of eye UVB to environmental UVB exposure was higher in Xichang than in Shaoxing.
【作者单位】：中国医科大学附属第四医院眼科;中国医科大学公共卫生学院环境卫生教研室;
【基金】：国家自然科学基金(81273034) 辽宁省自然科学基金(2014021009)
【分类号】：R77
【正文快照】： 海拔是影响环境紫外辐射强度的一个重要因素[1-2]。Godar[3]和Scotto[4]等研究得出,海拔每升高300 m,紫外辐射强度增加3.6%~3.8%。中国海拔最高地区是青藏高原,平均海拔在4 000~5 000 m,由于海拔高大气层稀薄,使得到达地面的紫外线增加,相应地人体暴露量也越大,尤其是眼晶体的

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