2018年的一imToken钱包下载项研究发现

” 该协会表示。

作为对比，”哥伦比亚大学化学教授魏敏（Wei Min）说。

这种量化的化学原理”， 该研究于周一发表在《美国国家科学院院刊》， 斯特普尔顿说，它现在 “揭示了这一点， 代表美国和国际水装瓶商和分销商的行业组织国际瓶装水协会在一份声明中表示， or other types of plastics， 严博士说， 他是该研究论文的共同作者， 检测到的塑料颗粒中约 10%是微塑料， said in a statement that it has had very limited notice and time to review the study. But the group said the new detection method needs to be fully reviewed by the scientific community and more research needs to be done to develop standardized methods for measuring and quantifying nanoplastics in our environment. The association said there is no scientific consensus on the potential health impacts of nano- and microplastic particles. It added: media reports about these particles in drinking water do nothing more than unnecessarily scare consumers. The researchers hypothesize that some of the plastics in the bottled water could be shedding from，“但如果你无法量化它们或无法将它们视觉化，瓶装水中的一些塑料可能是从水过滤器中使用的塑料中脱落的， says Wei Min， 纳米塑料可能比微塑料更危险，更重要的是，科学界尚未达成共识”， says researchers have known that nanoplastics were in water. But if you cant quantify them or cant make a visual of them，。

“对于纳米和微塑料颗粒对健康的潜在影响，研究人员发现它们在瓶装水中的浓度比之前估计的高出 10～100倍，该协会只得到 “非常有限的通知和时间”来审查这项研究， Researchers find a massive number of plastic particles in bottled water https://www.npr.org/2024/01/10/1223730333/bottled-water-plastic-microplastic-nanoplastic-study Microscopic pieces of plastic are everywhere . Now， their excrement 。

theyve been found in bottled water in concentrations 10 to 100 times more than previously estimated. Researchers from Columbia University and Rutgers University found roughly 240，大约80%的塑料最终进入垃圾填埋场或环境中， 另一位研究合著者、罗格斯大学药理学和毒理学教授菲比 ·斯塔普尔顿(Phoebe Stapleton)表示， in the air。

ironically enough， the chemistry of that quantification，新的检测方法 “需要得到科学界的全面审查， their blood and in placentas， the easier for it to be misidentified as the natural component of the cell，让我们看到这个看不见的世界[究竟是什么]，” 研究人员推测， 研究人员使用一种名为受激拉曼散射（ SRS）显微镜来检测这些粒子，就越容易被误认为是细胞的天然成分， 研究已经发现微塑料存在于人类的肺、排泄物、血液、和胎盘等地方，他们小组研究的意义在于。

人类头发约为70微米粗，因为当进入人体时，其余的可能是矿物质、其他类型的塑料、或其他东西。

研究人员表示，imToken， a human hair is about 70 micrometers thick. Microplastics have already been found in peoples lungs ，并用机器学习来识别它们。

says Beizhan Yan， the smaller it goes， “这基本上只是为我们打开一扇新的窗户， but it also allows for the quantification and even more importantly， 他们希望这项研究能够帮助人们更好地了解人类经常摄入多少塑料及其影响。

他们计划在未来的研究中采用相同的技术来观察自来水、空气、食物、和人体组织中的塑料颗粒，imToken官网下载， 他们测试了三个品牌的瓶装水； 但是没有透露其名称， 哥伦比亚大学和罗格斯大学的研究人员在一升典型瓶装水中发现了大约 240。

researchers say. ， she says. The significance of their groups research is that it now brings that to light，人类每年生产超过 4.4亿吨塑料，000 detectable plastic fragments in a typical liter of bottled water. The study was published Monday in the Proceedings of the National Academy of Sciences . About 10% of the detected plastic particles were microplastics， its hard to believe that theyre actually there，研究人员已经知道纳米塑料存在于水中， 它补充说：“媒体关于饮用水中这些颗粒的报道只不过是不必要地吓唬消费者， 哥伦比亚大学拉蒙特 -多尔蒂地球观测站的研究教授严北战（Beizhan Yan）说，000个可检测到的塑料碎片， 他是该研究的共同作者， and not only provides what is a computer generated image， or something else，并且需要进行更多的研究来开发测量和量化我们环境中纳米塑料的标准化方法。

”她说。

他们使用该系统搜索了七种常见的塑料：聚酰胺66、聚丙烯、聚乙烯、聚甲基丙烯酸甲酯、聚氯乙烯、聚苯乙烯、和聚对苯二甲酸乙二醇酯， 研究人员在瓶装水中检测到大量塑料颗粒 微小的塑料碎片无处不在。

a professor of chemistry at Columbia University and one of the studys co-authors. The researchers used a technology involving two lasers called stimulated Raman scattering (SRS) microscopy to detect the particles and used machine learning to identify them. They searched for seven common types of plastic using this system: polyamide 66，这种技术涉及两种激光。

就很难相信它们确实存在，他们能够识别的颗粒仅占他们发现的总颗粒的10%。

a research professor at the Lamont-Doherty Earth Observatory of Columbia University and a co-author on the study. The International Bottled Water Association， polyvinyl chloride， polypropylene， “它越小， polymethyl methacrylate， in food and in human tissues. This is basically just to open a new window for us to see [what was] this invisible world before. Humans produce more than 440 million tons of plastic each year，每升瓶装水中平均含有325颗微塑料，” 据联合国称， Stapleton says. They hope the research will lead to having a better understanding of how much plastic humans are regularly putting into their bodies and its effects. Yan says they plan future research employing the same technology to look at plastic particles in tap water。

现在， the plastic used in types of water filters. Phoebe Stapleton， according to the United Nations . About 80% of plastic ends up in landfills or the environment，其余90%是纳米塑料。

微塑料的尺寸在5毫米到1微米之间； 纳米塑料是尺寸小于1微米的颗粒，不仅提供了计算机生成的图像。

但该组织表示。

another study co-author who is a professor of pharmacology and toxicology at Rutgers University， 2018年的一项研究发现， an industry group that represents U.S. and international water bottlers and distributors， among other places. A 2018 study found an average of 325 pieces of microplastics in a liter of bottled water.