title: New analytical method for the determination of styrene oligomers formed from polystyrene decomposition and its application at the coastlines of the North-West Pacific ocean.
abstract: The pollution caused by plastic debris is an environmental problem with increasing concern in the oceans. Among the plastic polymers, polystyrene (PS) is one of the most problematic plastics due to the direct public health risk associated with their dispersion, as well as the numerous adverse environmental impacts which arise both directly from the plastics and from their degradation products. Little is known about their potential distribution characteristics throughout the oceans. For the first time, we report here on the regional distribution of styrene monomer (SM), styrene dimers (SD; 2,4-diphenyl-1-butene, SD1; 1,3-diphenyl propane, SD2), and styrene trimer (2,4,6-triphenyl-1-hexene: ST1), as products of PS decomposition determined from samples of sand and seawater from the shorelines of the North-West Pacific ocean. In order to quantitatively determine SM, SD (=SD1+SD2), and ST1, a new analytical method was developed. The detection limit was 3.3 μg L(-1), based on a signal-to-noise ratio of three, which was well-suited to quantify levels of SM, SD, and ST1 in samples. Surprisingly, the concentrations of SM, SD, and ST1 in sand samples from the shorelines were consistently greater than those in seawater samples from the same location. The results of this study suggest that SM, SD, and ST1 can be widely dispersed throughout the North-West Pacific oceans.
authors.affiliation: National Institute of Advanced Industrial Science and Technology (AIST), 1-3-1 Kasumigaseki, Chiyoda-ku, Tokyo 100-8921, Japan.
authors.forename: Katsuhiko
authors.initials: K
authors.lastname: Saido
authors.affiliation: College of Science & Technology, Nihon University, 7-7-1, Narashinodai, Funabashi-shi, Chiba 274-8555, Japan.
authors.forename: Koshiro
authors.initials: K
authors.lastname: Koizumi
authors.affiliation: College of Science & Technology, Nihon University, 7-7-1, Narashinodai, Funabashi-shi, Chiba 274-8555, Japan.
authors.forename: Hideto
authors.initials: H
authors.lastname: Sato
authors.affiliation: Shizuoka University, 836, Ohya Suruga-ku, Shizuoka-shi, Shizuoka-ken 422-8529, Japan.
authors.forename: Naoto
authors.initials: N
authors.lastname: Ogawa
authors.affiliation: Gyeongnam Department of Environmental Toxicology and Chemistry, Korea Institute of Toxicology (KIT), 17 Jeigok-gil, Munsan-eup, Jinju, Gyeongsangnam-do 660-844, Republic of Korea; Department of Environment and Energy Engineering, College of Engineering, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 500-757, Republic of Korea. Electronic address: kwonbg0@daum.net.
authors.forename: Bum Gun
authors.initials: BG
authors.lastname: Kwon
authors.affiliation: Department of Environment and Energy Engineering, College of Engineering, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 500-757, Republic of Korea.
authors.forename: Seon-Yong
authors.initials: SY
authors.lastname: Chung
authors.affiliation: Toyama Prefecture University, 5180 Kurokawa, Imizu-shi, Toyama 939-0398, Japan.
authors.forename: Takashi
authors.initials: T
authors.lastname: Kusui
authors.affiliation: Atmosphere and Ocean Research Institute, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-shi, Chiba 277-8564, Japan.
authors.forename: Masahiko
authors.initials: M
authors.lastname: Nishimura
authors.affiliation: National Institute of Advanced Industrial Science and Technology (AIST), 1-3-1 Kasumigaseki, Chiyoda-ku, Tokyo 100-8921, Japan.
authors.forename: Yoichi
authors.initials: Y
authors.lastname: Kodera
mesh_terms: D004784:Environmental Monitoring / Q000379:methods*; D010140:Pacific Ocean; D011137:Polystyrenes / Q000032:analysis*; D012623:Seawater / Q000737:chemistry; D020058:Styrene / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis
chemical_list: D011137:Polystyrenes; D014874:Water Pollutants, Chemical; D020058:Styrene
keywords: Plastics; Polystyrene; Styrene dimer; Styrene monomer; Styrene trimer