Wang Fang, Yu Jia Ming, Yang De Qi, Gao Qian, Hua Hui, Liu Yang
School of Public Health, China Medical University, Shenyang 110122, Liaoning, China.
Ophthalmology Department, The Fourth Affiliated Hospital of China Medical University, Shenyang110005, Liaoning, China.
Biomed Environ Sci. 2017 Feb;30(2):113-127. doi: 10.3967/bes2017.015.
To show the distribution of facial exposure to non-melanoma biologically effective UV irradiance changes by rotation angles.
This study selected the cheek, nose, and forehead as representative facial sites for UV irradiance measurements, which were performed using a rotating manikin and a spectroradiometer. The measured UV irradiance was weighted using action spectra to calculate the biologically effective UV irradiances that cause non-melanoma (UVBEnon-mel) skin cancer. The biologically effective UV radiant exposure (HBEnon-mel) was calculated by summing the UVBEnon-mel data collected over the exposure period.
This study revealed the following: (1) the maximum cheek, nose and forehead exposure UVA and UVB irradiance times and solar elevation angles (SEA) differed from those of the ambient UV irradiance and were influenced by the rotation angles; (2) the UV irradiance exposure increased in the following order: cheek < nose < forehead; (3) the distribution of UVBEnon-mel irradiance differed from that of unweighted UV radiation (UVR) and was influenced by the rotation angles and exposure times; and (4) the maximum percentage decreases in the UVBEnon-mel radiant exposure for the cheek, nose and forehead from 0°to 180°were 48.41%, 69.48% and 71.71%, respectively.
Rotation angles relative to the sun influence the face's exposure to non-melanoma biologically effective UV.
通过旋转角度展示面部非黑色素瘤生物有效紫外线辐照度变化的分布情况。
本研究选取脸颊、鼻子和额头作为面部紫外线辐照度测量的代表性部位，使用旋转人体模型和光谱辐射计进行测量。利用作用光谱对测量得到的紫外线辐照度进行加权，以计算导致非黑色素瘤（UVBEnon-mel）皮肤癌的生物有效紫外线辐照度。通过对暴露期间收集的UVBEnon-mel数据求和来计算生物有效紫外线辐射暴露量（HBEnon-mel）。
本研究揭示了以下几点：（1）脸颊、鼻子和额头的最大UVA和UVB辐照度暴露时间以及太阳仰角（SEA）与环境紫外线辐照度不同，且受旋转角度影响；（2）紫外线辐照度暴露按以下顺序增加：脸颊 < 鼻子 < 额头；（3）UVBEnon-mel辐照度的分布与未加权紫外线辐射（UVR）的分布不同，且受旋转角度和暴露时间影响；（4）脸颊、鼻子和额头从0°到180°的UVBEnon-mel辐射暴露量的最大百分比降幅分别为48.41%、69.48%和71.71%。
相对于太阳的旋转角度会影响面部对非黑色素瘤生物有效紫外线的暴露。
