主页 > 医药科学 >
【medical-news】瓶装水并没有改善饮用水污染问题
Published: Monday, 10-Mar-2008
What the recent story about traces of pharmaceuticals in our drinking water makes very clear is that access to safe drinking water is an issue that affects everyone.
All our water sources - rivers and reservoirs, springs and aquifers - may contain drugs flushed down our toilets and off factory farms somewhere up stream. But scaring people away from their taps into the bottled water isle at the grocery store will cost them thousands of dollars a year without making them any safer.
"Nearly 40 percent of bottled water is simply repackaged tap water. What's more, there's no government agency testing bottled water contamination from known hazards such as bacteria, synthetic contaminants, or heavy metals. While the Associated Press did not test bottled water, earlier testers have found dangerous substances such as arsenic and bromate, both known carcinogens. And bottled water comes with its own list of unknown hazards from chemicals leached into the water from the plastic bottles. Tap water is still the best choice for most Americans.
"Americans are right to be concerned by reports of prescription medications in their water. But this isn't a problem that can be fixed at each tap or each household. Contaminants in drinking water are a national problem worthy of a national solution.
Communities around the country are struggling to maintain and upgrade aging water systems that are groaning under the stain of a growing population. At the same time, the federal government contribution to total clean water spending has shrunk dramatically, from 78 percent in 1978 to just 3 percent today. States spend approximately $63 billion annually to compensate, but their efforts barely keep pace with current needs, let alone future ones. Based on Environmental Protection Agency estimates, there is a gap of nearly $22 billion per year between needed and available funds for water infrastructure.
"EPA must set standards for potentially dangerous substances and Congress must provide the funding to help the more than 158,000 drinking water systems around the country to deal with them. According to a recent Luntz poll, nine out of ten Americans believe that clean and safe water is a national priority that deserves federal investment.
Food & Water Watch has been leading a campaign to establish a permanent funding stream for water infrastructure projects in the form of a trust fund. In Congress, Rep. James Oberstar (MN), Rep. Edie Bernice Johnson (TX), and Rep. Earl Blumenauer (OR) have requested a GAO study to identify sustainable funding sources and announced their intention to pursue legislation for a trust fund once this funding source is identified. America's water is a public responsibility that should be given a steady and reliable source of funding to keep water clean and safe for all communities."
http://www.news-medical.net/?id=36066 本人已认领该文编译，48小时后若未提交译文，请其他战友自由认领 1月30日的爱思唯尔期刊《毒理学快报》(Toxicology Letters)刊登了美国辛辛那提大学的一项最新发现。研究表明，一些由聚碳酸酯制成的运动水壶或饮水瓶中装入热水后会释放出一种扰乱内分泌的化学物质酚甲烷（BPA），这种物质会对人体健康有很大的影响。
之前研究显示，重复摩擦、刷洗与烹煮婴儿用聚碳酸酯瓶会释放酚甲烷。最新研究中，科学家发现，由聚碳酸酯（polycarbonate，PC）材质制成的水瓶，无论新旧当遇到热水都将会放出扰乱内分泌的化学物质酚甲烷（BPA）。酚甲烷又称为“内分泌干扰素”，被认为是一种环境荷尔蒙，可能干扰人体内分泌平衡。
研究同时还发现，无论瓶子的新旧，当放入冷水或是温水，其酚甲烷的释放量与速率都相同。但一旦水瓶接触了滚烫的热水，酚甲烷的释放速率会马上增加15到55倍。
研究人员强调，尽管虽然目前对于多高酚甲烷浓度才对人体有害人体尚未达成共识，但酚甲烷会影响人体的荷尔蒙系统，导致乳癌摄护腺癌、不孕和脑部损害等健康问题，所以应当引起生产商和消费者足够的重视。(科学网 于乃森/编译) What the recent story about traces of pharmaceuticals in our drinking water makes very clear is that access to safe drinking water is an issue that affects everyone.
最近有关饮用水中含有某些药物的事件已经给公众提了个醒——喝到安全的饮水是一项影响到每个人的事情。
All our water sources - rivers and reservoirs, springs and aquifers - may contain drugs flushed down our toilets and off factory farms somewhere up stream. But scaring people away from their taps into the bottled water isle at the grocery store will cost them thousands of dollars a year without making them any safer.
阅读本文的人还阅读：
作者:admin@医学,生命科学 2011-03-24 21:19
医学,生命科学网