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  • Gas chromatography  (1)
  • Microplastic  (1)
  • 1
    Publication Date: 2022-05-31
    Description: Microplastics (MPs) are small plastic debris (〈 5 mm) which pose negative impacts to marine ecosystems. This paper investigated microplastic abundance in 0–5 cm and 5–10 cm layers of three sandy beaches in Khanh Hoa province. The results showed that fiber was the most abundant microplastics in the samples, comprising 85% of the total microplastics. Fragment and film were reported with smaller percentages, over 10% and 2%, respectively. In addition, the effect of grain sizes on microplastic abundance in two sediment layers was also observed. At Doc Let and Cam Lam, sediments were mainly of fine grain sizes, microplastic concentrations decreased, when the sample depths increased. On the other hand, at Bach Dang, sediment sizes ranged from medium to coarse sizes, the difference of microplastic levels in two layers was not significant.
    Description: Published
    Description: Refereed
    Keywords: Microplastic ; Sandy beach
    Repository Name: AquaDocs
    Type: Journal Contribution
    Format: 39-47
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  • 2
    Publication Date: 2022-06-08
    Description: The paper presents the analysis results of total petroleum hydrocarbon (TPH) in the water and sediments of two surveys at 12 stations in the Ca Na sea area in Ninh Thuan province in April 2018 and December 2019. Water samples were extracted by liquid-liquid method with dichloromethane solvent, sediment samples extracted by Soxhlet method, and Dichlorometal. Analysis by gas chromatography with FID detector (GC-FID). The total hydrocarbon content is calculated from the carbon range C9 to C36. The results showed that the concentration of TPH in the water ranged from 1.2 to 32.3µg/l with an average of 11.9±6.2µg/l, nearshore stations in the north (Mui Dinh) have higher concentrations than in the south (Ca Na), the concentration in December 2019 was higher than in April 2018 at most stations. In the sediments, the average TPH content is 4.3µg/gdry, ranging from 1.7-11.0 µg/gdry, showing that the sediment here has not been contaminated with TPH.
    Description: Published
    Description: Refereed
    Keywords: Petroleum hydrocarbon ; Gas chromatography ; Pollution
    Repository Name: AquaDocs
    Type: Journal Contribution
    Format: 93-100
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