Synthetic Polymer Contamination in Bottled Water.
Synthetic Polymer Contamination in Bottled Water.
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DOI：
10.3389/fchem.2018.00407
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发表时间：
2018
影响因子：
5.5
通讯作者：
Neratko J
中科院分区：
文献类型：
--
作者：
Mason SA;Welch VG;Neratko J
在9个不同国家的19个地点购买的11个全球采购品牌的瓶装水，使用尼罗河红标签进行了微塑料污染测试。在处理的259个瓶子中，93%显示出微塑料污染的迹象。在考虑到可能的背景（实验室）污染后，平均每升瓶装水中发现10.4个尺寸>100微米的微塑料颗粒。碎片是最常见的形态（66%），其次是纤维。使用FTIR光谱法证实这些颗粒中有一半是聚合物，聚丙烯是最常见的聚合物类型（54%），与用于生产瓶盖的常见塑料相匹配。一小部分颗粒（4%）显示存在工业润滑剂。虽然小于100微米的颗粒的光谱分析是不可能的，但尼罗红染料的吸附表明这些颗粒最有可能是塑料的。包括这些较小的颗粒（6.5-100微米）在内，每升瓶装水中平均有325个塑料微粒。塑料微粒污染范围为每升0到超过10，000个塑料微粒，其中95%的微粒大小在6.5 - 100微米之间。数据显示，污染至少部分来自包装和/或装瓶过程本身。鉴于瓶装水的消费在地球仪中的普遍性，这项研究的结果支持了进一步研究微塑料和纳米塑料对人类健康影响的必要性。
Eleven globally sourced brands of bottled water, purchased in 19 locations in nine different countries, were tested for microplastic contamination using Nile Red tagging. Of the 259 total bottles processed, 93% showed some sign of microplastic contamination. After accounting for possible background (lab) contamination, an average of 10.4 microplastic particles >100 um in size per liter of bottled water processed were found. Fragments were the most common morphology (66%) followed by fibers. Half of these particles were confirmed to be polymeric in nature using FTIR spectroscopy with polypropylene being the most common polymer type (54%), which matches a common plastic used for the manufacture of bottle caps. A small fraction of particles (4%) showed the presence of industrial lubricants. While spectroscopic analysis of particles smaller than 100 um was not possible, the adsorption of the Nile Red dye indicates that these particles are most probably plastic. Including these smaller particles (6.5–100 um), an average of 325 microplastic particles per liter of bottled water was found. Microplastic contamination range of 0 to over 10,000 microplastic particles per liter with 95% of particles being between 6.5 and 100 um in size. Data suggests the contamination is at least partially coming from the packaging and/or the bottling process itself. Given the prevalence of the consumption of bottled water across the globe, the results of this study support the need for further studies on the impacts of micro- and nano- plastics on human health.