摘要：As one of the screening test methods for the degradation of chemicals in water, the photoirradiation test method was developed by using the equipment illustrated in Fig. 1. After quartz tubes (content : 13×100 mm) containing diluted solutions of test chemicals with water or ethanol/water (5 ml) are sealed with stoppers, they are fixed in the equipment at 1/4 slope at 30 cm distance from the light source (two fluorochemical lamps : 20 W×2) and irradiated with shaking at 25°C at 100 rpm (amplitude : 7 cm). At appropriate times during irradiation, the remaining amounts of chemicals in the tubes are determined. The degradability is judged from the time required for 50% degradation.
