Mato Y, Isobe T, Takada H, Kanehiro H, Ohtake C, Kaminuma T
Faculty of Agriculture, Tokyo University of Agriculture & Technology, Fuchu, Japan.
Environ Sci Technol. 2001 Jan 15;35(2):318-24. doi: 10.1021/es0010498.
Plastic resin pellets (small granules 0.1-0.5 centimeters in diameter) are widely distributed in the ocean all over the world. They are an industrial raw material for the plastic industry and are unintentionally released to the environment both during manufacturing and transport. They are sometimes ingested by seabirds and other marine organisms, and their adverse effects on organisms are a concern. In the present study, PCBs, DDE, and nonylphenols (NP) were detected in polypropylene (PP) resin pellets collected from four Japanese coasts. Concentrations of PCBs (4-117 ng/g), DDE (0.16-3.1 ng/g), and NP (0.13-16 microg/g) varied among the sampling sites. These concentrations were comparable to those for suspended particles and bottom sediments collected from the same area as the pellets. Field adsorption experiments using PP virgin pellets demonstrated significant and steady increase in PCBs and DDE concentrations throughout the six-day experiment, indicating that the source of PCBs and DDE is ambient seawater and that adsorption to pellet surfaces is the mechanism of enrichment. The major source of NP in the marine PP resin pellets was thought to be plastic additives and/or their degradation products. Comparison of PCBs and DDE concentrations in mari
塑料树脂颗粒（直径为0.1 - 0.5厘米的小颗粒）在全球海洋中广泛分布。它们是塑料工业的一种工业原料，在制造和运输过程中无意释放到环境中。它们有时会被海鸟和其他海洋生物摄入，其对生物的不利影响令人担忧。在本研究中，在从日本四个海岸收集的聚丙烯（PP）树脂颗粒中检测到了多氯联苯（PCBs）、滴滴伊（DDE）和壬基酚（NP）。多氯联苯（4 - 117纳克/克）、滴滴伊（0.16 - 3.1纳克/克）和壬基酚（0.13 - 16微克/克）的浓度在采样点之间有所不同。这些浓度与从与颗粒相同区域收集的悬浮颗粒和底部沉积物的浓度相当。使用PP原始颗粒进行的现场吸附实验表明，在整个为期六天的实验中，多氯联苯和滴滴伊的浓度显著且稳定增加，这表明多氯联苯和滴滴伊的来源是周围海水，并且颗粒表面吸附是富集机制。海洋PP树脂颗粒中壬基酚的主要来源被认为是塑料添加剂和/或其降解产物。海洋中多氯联苯和滴滴伊浓度的比较
