서울 지역의 자외선 조사량에 따른 PET 먹는샘물 용기의 용출 특성 연구: 보관 조건 중심으로
Extraction Characteristics of PET Bottled Water Bottles underUV Radiation in Seoul: Storage Conditions
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The concentrations of antimony, acetaldehyde, and formaldehyde in ten products distributed domestically in containers was analyzed considering the differences in storage conditions caused by ultraviolet (UV) exposure. The total amount of UV rays in Seoul was 3.87% in May, indicating the highest UV-A and UV-B in May. Under acceleration test conditions, antimony, acetaldehyde, and formaldehyde concentrates were 1.7, 436, and 382 μg/L, respectively. Similar to the results of the acceleration test, considering temperature weights matching the total ultraviolet radiation dose in Seoul, each substance exhibited a good tendency with the outdoor exposure migration concentration result. The concentration of antimony in products exposed outdoors for one year was up to 2.1 μg/L, and that in underground storage was 1.8 μg/L, which was significantly lower than the standard for monitoring bottled water (15 μg/L). For acetaldehyde, the concentrations were 195 μg/L for outdoor exposure and 59 μg/L for underground storage. Formaldehyde showed significantly lower concentration values compared to the bottled water monitoring standard, with 114 and 22 μg/L under outdoor exposure and in underground storage, respectively. Consumers can have access to safe drinking water if distribution is thoroughly managed at retail stores because only storing bottled water in a space of ~ 20oC blocked from UV rays can significantly lower the migration of each substance.
Abstract
The concentrations of antimony, acetaldehyde, and formaldehyde in ten products distributed domestically in containers was analyzed considering the differences in storage conditions caused by ultraviolet (UV) exposure. The total amount of UV rays in Seoul was 3.87% in May, indicating the highest UV-A and UV-B in May. Under acceleration test conditions, antimony, acetaldehyde, and formaldehyde concentrates were 1.7, 436, and 382 μg/L, respectively. Similar to the results of the acceleration test, considering temperature weights matching the total ultraviolet radiation dose in Seoul, each substance exhibited a good tendency with the outdoor exposure migration concentration result. The concentration of antimony in products exposed outdoors for one year was up to 2.1 μg/L, and that in underground storage was 1.8 μg/L, which was significantly lower than the standard for monitoring bottled water (15 μg/L). For acetaldehyde, the concentrations were 195 μg/L for outdoor exposure and 59 μg/L for underground storage. Formaldehyde showed significantly lower concentration values compared to the bottled water monitoring standard, with 114 and 22 μg/L under outdoor exposure and in underground storage, respectively. Consumers can have access to safe drinking water if distribution is thoroughly managed at retail stores because only storing bottled water in a space of ~ 20oC blocked from UV rays can significantly lower the migration of each substance.
참고문헌 (24)
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