McGinley J, Martin C J, MacKie R M
Departments of Clinical Physics and Bio-Engineering, University of Glasgow, Glasgow G12 8QQ, U.K.
Br J Dermatol. 1998 Sep;139(3):428-38. doi: 10.1046/j.1365-2133.1998.02406.x.
Spectral irradiances of 100 commercially available sunbeds in current use have been measured. Ultraviolet (UV) A and UVB doses from sunbed use have been calculated and compared with doses likely to be received from solar radiation. The majority of sunbeds use UVA fluorescent tubes for irradiating the body and filtered metal halide lamps, which have a higher proportion of UVA1, for the face. The average minimum erythemal dose per session is 0.80, but irradiances for particular models varied by a factor of two to three primarily because of decline in lamp output with age. The UVA dose from a session on a sunbed is similar to that which might be received from 20 to 30 min sunbathing at a Mediterranean resort or 1 h on a sunny day in Glasgow, while UVB doses are 20-25% of this level. Responses from 200 current users of the sunbeds indicate that 38% had skin types 1 and 2, that 17% had more than 100 annual sunbed sessions and that 35% rarely or never used the goggles provided.
已对目前使用的100种市售日光浴床的光谱辐照度进行了测量。已计算出日光浴床使用产生的紫外线（UV）A和UVB剂量，并与可能从太阳辐射中接收的剂量进行了比较。大多数日光浴床使用UVA荧光灯管照射身体，而使用过滤金属卤化物灯照射面部，这种灯的UVA1比例更高。每次疗程的平均最小红斑剂量为0.80，但特定型号的辐照度变化幅度为两到三倍，这主要是由于灯管输出随使用年限下降所致。在日光浴床上进行一次疗程所产生的UVA剂量，与在地中海度假胜地进行20至30分钟日光浴或在格拉斯哥阳光充足的日子里晒1小时太阳所接收的剂量相似，而UVB剂量则为该水平的20%至25%。对200名当前日光浴床使用者的调查反馈表明，38%的人皮肤类型为1型和2型，17%的人每年使用日光浴床超过100次，35%的人很少或从不使用提供的护目镜。
