期刊
WATER SCIENCE AND TECHNOLOGY-WATER SUPPLY
卷 12, 期 2, 页码 193-199出版社
IWA PUBLISHING
DOI: 10.2166/ws.2012.128
关键词
antimony; bottled natural water; leaching; PET
资金
- Doctoral School of Sciences and Technology at the Lebanese University
Antimony (Sb) leaching from polyethylene terephthalate (PET) bottling material was assessed in eight registered Lebanese brands of bottled natural water as a function of contact time. The study was performed indoors at 22 degrees C in the dark and outdoors at a maximum temperature of 45 degrees C under sunlight. The leached antimony concentration increased with contact time for all of the studied brands except one. The antimony concentration reached 5.5 mu g/L after 544 days of contact time with PET packaging. Small bottles with large contact surface area had higher antimony concentration. However, outdoor storage under sunlight at temperatures below 45 degrees C did not reveal a significant effect on antimony release. Among some physico-chemical parameters studied (pH, calcium, magnesium and bicarbonate), only calcium concentration showed a significant effect on antimony release. The rate of antimony leaching, normalized to the surface to volume ratio of the water bottle, fits the exponential model Sb/(SN) = 0.562(e.0041t), with R-2 = 0.87. Atomic absorption spectroscopy analysis of the different PET packaging material showed an antimony concentration between 80.6 and 352.7 mg Sb/kg PET.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据