目的:为研究焦油沥青对皮肤的损害,用煤焦油沥青和石油沥青对家兔皮肤进行了光毒性作用的实验研究。方法:用体重2公斤左右的家兔(日本白色种、雄性),于左右耳翼内侧分别选取2个部位,在1cm×1cm 大小范围涂以用白色凡士林调制的焦油沥青粉末(浓度5%),经24小时后清拭干净,用氙灯光源的光束照射,24小时后观察皮肤变化,区分损害的程度。损害程度分类如表2所示,共分为5级,损害程度最高的以 OBJECTIVE: To study the damage to skin caused by tar pitch, an experiment on the phototoxicity of rabbit skin with coal tar pitch and petroleum pitch was conducted. METHODS: Two rabbits (Japanese white species, male) weighing about 2 kg were selected from two sites on the medial side of the right and left ear, and tar white powder (concentration 5%) prepared by using white petrolatum in a size of 1 cm × 1 cm After 24 hours, wipe clean with xenon light source beam irradiation, 24 hours after the observation of skin changes, the distinction between the extent of damage. As shown in Table 2, the classification of damage is divided into five levels with the highest degree of damage