Re: 關於含鉛水晶酒杯

看板Wine (酒板)作者ChromeHearts (真心人~真心人~XD)時間18年前 (2007/12/06 02:20)推噓11(11推 0噓 1→)

留言12則, 10人參與討論串3/4 (看更多)

※ 引述《Huangs (狐狸吃小鳥)》之銘言： : 這裡可以參考一下： : http://en.wikipedia.org/wiki/Lead_crystal : Lead crystal and food safety : Significant amounts of lead can migrate from lead crystal containers into : beverages stored in them.[1] Lead crystal typically contains 24–35 percent : lead oxide. In a study performed at North Carolina State University, the : amount of lead migration was measured for port wine stored in lead crystal : decanters. After two days, lead levels were 89 μg/L (micrograms per liter). : After four months, lead levels were between 2,000 and 5,000 μg/L. White wine : doubled its lead content within an hour of storage and tripled it within four : hours. Some brandy stored in lead crystal for over five years had lead levels : around 20,000 μg/L.[citation needed] To put this into perspective, EPA's : lead standard for drinking water is 15 μg/L = 15ppb.[2] Citrus juices and : infant formula leach lead from crystal just as effectively as alcoholic : beverages. Several companies do make lead crystal baby bottles and it is : suspected they may present a health danger to infants.[citation needed] 鉛 - 吸入食入可造成腦部受損、昏脹、食慾不振、噁心、想吐、嚴重可引死亡，在人體內會造成累積，便秘、焦慮、關節痛、腹痛都有可能，牙齒會在牙齦處形成鉛線累積沉殿。也會使胎兒神經系統受損，造成兩性生殖系統損害，男性陽萎、無性慾、無生育力；女性早產、流產、經期不正常。晶體不溶於水，氧氣存在下水和弱有機酸會侵蝕鉛，照上述原文水晶玻璃杯為含鉛量24-35%的玻璃製成，而上述實驗酒儲於水晶玻璃器皿內兩天後鉛含量為89 ppb. (parts per billion) 四個月鉛含量為2000-5000 ppb. 每10^9克中的含量五年後鉛含量為20000 ppb. 例 <== 每1000000000克酒含20000克鉛也等於每升含20000μg鉛人體8小時平均暴露容許量 0.1mg/m^3 (空氣含量) 短時間暴露容許量 0.3mg/m^3 生物指標 30μg/100ml = 300 ppb. (血液中含鉛容許量) 假設你喝的酒含鉛量全部吸收，以正常男性體重70為假設，大約有1/13體重為血，所以你有五公斤多的血量，約為5L，300μg * 5 = 1500μg 這個意思說放在水晶玻璃杯兩天的你可以喝16升還沒達上限，故酒杯買水晶玻璃的倒酒來喝是極安全的，但儲酒瓶就不要，四個月的溶出量光一升沒喝完已經爆上限了! 參考資料物質安全資料表 -- 抽菸帶來生理的不健康...三十年後結帳... 戒菸帶來心理的不健康...隨時可能買單... -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 218.175.55.155