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人们都知道未煮的生水不能喝,殊不知,煮过后恶化了水质的煮水,通常就有6种,也不能喝,以免损害人体健康。 未沸水 自来水经氯化处理后,当水温达到90℃时,卤代烃由53微克/千克上升至191微克/千克,氯仿由44微克/千克上升至177微克/千克,超过饮用水卫生标准的2倍。长期饮用,使人体易患膀胱癌或直肠癌的可能性增加20％至38％。但是当水温达到100℃沸腾3分钟,则卤代烃与氯仿都会随水蒸汽挥发至饮用水卫生标准内。
People know that uncooked raw water can not drink, as everyone knows, after cooking worsened the water quality of the boiled water, usually there are 6 species, can not drink, so as not to harm human health. Unboiled tap water chlorinated, when the water temperature reached 90 ℃, the halogenated hydrocarbons increased from 53 micrograms / kg to 191 micrograms / kg, chloroform increased from 44 micrograms / kg to 177 micrograms / kg, exceeding the drinking water health standards 2 times. Long-term consumption, the body susceptible to bladder cancer or rectal cancer increased by 20% to 38%. However, when the water temperature reaches 100 ° C and boiled for 3 minutes, both halogenated hydrocarbons and chloroform volatilize with water vapor into drinking water hygiene standards.