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Pollution characteristics of micro plastics and heavy metals in the intertidal zone sandy sediments of the offshore area of Qinhuangdao
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Yueqin Chen1, Wei Luo2, Conghui Sun1, Guanghong Wu1, *
Haiyang Xuebao | 2020, 42(4) : 113 - 121
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Haiyang Xuebao | 2020, 42(4): 113-121
• Marine Chemistry •
Pollution characteristics of micro plastics and heavy metals in the intertidal zone sandy sediments of the offshore area of Qinhuangdao
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Yueqin Chen1, Wei Luo2, Conghui Sun1, Guanghong Wu1, *
Affiliations
  • 1 Tianjin Key Laboratory of Water Resources and Environment, Tianjin Normal University, Tianjin 300387, China
  • 2 State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
Published: 2020-04-25 doi: 10.3969/j.issn.0253-4193.2020.04.013
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Micro plastics in sandy sediments collected from the intertidal zone of the offshore area of Qinhuangdao were floated by saturated NaCl solution and filtrated with membrane filter. Micro plastic particles were observed using microscope and infrared spectroscopy to discuss the origin and morphology. The surface morphology of micro plastics particles was characterized by scanning electron microscopy-energy dispersive spectrometer (SEM-EDS) to analyze surface morphology and elements. The geo accumulation indexes (Igeo) and enrichment factors (EF) were used to study the pollution level and enrichment of heavy metals (Hg, Cd and Pb) in sandy sediments. Total organic carbon (TOC), total nitrogen (TN) and loss on ignition (LOI) and stable isotopes of carbon and nitrogen (δ13C and δ15N) in sandy sediments were determined in order to analyze the source characteristics. The results indicated that there were three types of micro plastics: fiber, foam and film. Fiber was in the majority of micro plastics. Micro plastic particles were enriched with Si, Al, Mg, Fe and Ca in the surface. Hg and Cd were seriously enriched, and Pb was not enriched in the sandy sediments. The concentrations of TOC and TN were low; TOC/TN ratio and stable isotopic composition of C and N (δ13C and δ15N) indicated that TOC originated from marine plankton algae.

Qinhuangdao  /  intertidal zone  /  micro plastics  /  heavy metals  /  nutrients
Yueqin Chen, Wei Luo, Conghui Sun, Guanghong Wu. Pollution characteristics of micro plastics and heavy metals in the intertidal zone sandy sediments of the offshore area of Qinhuangdao[J]. Haiyang Xuebao, 2020 , 42 (4) : 113 -121 . DOI: 10.3969/j.issn.0253-4193.2020.04.013
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Year 2020 volume 42 Issue 4
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Article Info
doi: 10.3969/j.issn.0253-4193.2020.04.013
  • Receive Date：2019-06-04
  • Online Date：2026-03-26
  • Published：2020-04-25
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History
  • Received：2019-06-04
  • Revised：2019-09-15
Funding
Affiliations
    1 Tianjin Key Laboratory of Water Resources and Environment, Tianjin Normal University, Tianjin 300387, China
    2 State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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