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Dataset Overview | National Centers for Environmental Information (NCEI)

Microplastics concentration in Algerian surface waters from 2018-01-28 to 2018-11-29 (NCEI Accession 0275966)

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This study was carried out to estimate the microplastics (i.e. plastics measuring less than 5mm, reported in unit of pieces/m^3) concentration in the Algerian surface waters. Microplastics data was collected over four seasons from 2018-01-28 to 2018-11-29 using a manta net. This dataset contains the results from all 24 sampling stations, in a spreadsheet format.
  • Cite as: Setiti, Skander; Hamdi, Boualem; Chernai, Safia; Houma Bachari, Fouzia; Bachouche, Samir; Ghezali, Yousra; Suaria, Giuseppe (2022). Microplastics concentration in Algerian surface waters from 2018-01-28 to 2018-11-29 (NCEI Accession 0275966). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0275966. Accessed [date].
gov.noaa.nodc:0275966
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  • Excel
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Distributor NOAA National Centers for Environmental Information
+1-301-713-3277
NCEI.Info@noaa.gov
Dataset Point of Contact NOAA National Centers for Environmental Information
ncei.info@noaa.gov
Time Period 2018-01-28 to 2018-11-29
Spatial Bounding Box Coordinates
West: 2.773019
East: 2.86953
South: 36.716517
North: 36.78695
Spatial Coverage Map
General Documentation
Associated Resources
  • The NOAA NCEI Global Marine Microplastics Database (1972-present)
    • NCEI Collection
      Navigate directly to the URL for data access and direct download.
  • Setiti S, Hamdi B, Chernai S, Houma Bachari F, Bachouche S, Ghezali Y, Suaria G. Seasonal variation of microplastics density in Algerian surface waters (South-Western Mediterranean Sea). Mediterranean Marine Science. 2021 May 06;22(2):317-326.
    • Parent ID (indicates this dataset is related to other data):
    • gov.noaa.nodc:NCEI-Marine-Microplastics
Publication Dates
  • publication: 2022-12-06
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status Complete - production of the data has been completed
Historical archive - data has been stored in an offline storage facility
Data Update Frequency As needed
Supplemental Information
Submission Package ID: NCLL0F
Purpose These data were collected in order to determine the microplastics concentrations in the Algerian surface waters.
Use Limitations
  • accessLevel: Public
  • Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
Dataset Citation
  • Cite as: Setiti, Skander; Hamdi, Boualem; Chernai, Safia; Houma Bachari, Fouzia; Bachouche, Samir; Ghezali, Yousra; Suaria, Giuseppe (2022). Microplastics concentration in Algerian surface waters from 2018-01-28 to 2018-11-29 (NCEI Accession 0275966). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0275966. Accessed [date].
Cited Authors
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Theme keywords NODC DATA TYPES THESAURUS NODC OBSERVATION TYPES THESAURUS WMO_CategoryCode
  • oceanography
Global Change Master Directory (GCMD) Science Keywords
Data Center keywords NODC COLLECTING INSTITUTION NAMES THESAURUS NODC SUBMITTING INSTITUTION NAMES THESAURUS
Instrument keywords NODC INSTRUMENT TYPES THESAURUS Global Change Master Directory (GCMD) Instrument Keywords
Place keywords NODC SEA AREA NAMES THESAURUS Global Change Master Directory (GCMD) Location Keywords
Keywords NCEI ACCESSION NUMBER
Use Constraints
  • Cite as: Setiti, Skander; Hamdi, Boualem; Chernai, Safia; Houma Bachari, Fouzia; Bachouche, Samir; Ghezali, Yousra; Suaria, Giuseppe (2022). Microplastics concentration in Algerian surface waters from 2018-01-28 to 2018-11-29 (NCEI Accession 0275966). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0275966. Accessed [date].
Access Constraints
  • Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
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  • In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.
Lineage information for: dataset
Processing Steps
  • 2022-12-06T22:24:33Z - NCEI Accession 0275966 v1.1 was published.
Output Datasets
Lineage information for: dataset
Processing Steps
  • Parameter or Variable: MICROPLASTIC CONCENTRATION (measured); Units: pieces/m3; Observation Category: in situ; Sampling Instrument: Manta net; Sampling and Analyzing Method: The manta net used in this study has a mouth opening of 15x60 cm, two fins (wings) of 45 x 30 x 3 cm, and a 3 m long net with a mesh size of 330 μm to which a collector is attached at its end. To quantify the water filtered the trawl was equipped with a mechanical flow meter. Sampling was only conducted when the weather was calms and sea conditions were favorable. The sampling was done from the side of the ship using a rope, outside of the wake zone to avoid the collection of water affected by turbulence. For each transect, the geographical coordinates were recorded with a high precision calibrated Global Positioning System (GPS). The trawls were made in a straight direction at a speed of about 2-3 knots for 20 min. After 20 minutes of trawling, the net was rinsed several times from the outside to recover all debris in the collector. On-board, the content of the collector was recovered and transferred into 1L bottles, labelled, stored in seawater and then transported to the laboratory for sorting, counting and analysis according to standard protocols. Visual detection of microplastics was made by pouring the sample through a 300 μm sieve and removing all natural or artificial litter objects of a size > 5 mm. After removing larger objects, the remaining pieces were concentrated on the sieve using distilled water. Irrespective of the organic matter content, chemical digestion of all samples was obtained by adding 20 mL of 30% hydrogen peroxide and 20 mL of aqueous 0.05 M Fe (II) solution to each sample, the mixture was then placed on a hot plate set to 75 °C and the reaction was allowed to continue until all organic material disappeared. After digestion, the solution was sieved again (300 μm) and poured into a glass container using a minimum. amount of 70% ethanol, thus facilitating the visual isolation of the plastic particles. Finally, the solution was poured into a glass petri dish and analyzed using a binocular magnifying glass, with an integrated camera to identify the microplastics particles (<5 mm to 330 μm). To avoid external contamination, only metal and glass equipment was used and all materials used for sampling were rinsed with distilled water prior to use. All liquid reagents were pre-filtered and all sampling and sorting equipment was kept closed at any time to prevent airborne contamination during sample processing.; Data Quality Method: In order to confirm the polymeric nature, the samples were analyzed by Attenuated Total Reflectance Fourier Transform InfraRed spectroscopy (ATR-FTIR; DuraSamplIR). The instrument was operated in scanning transmittance mode at a mid-IR range of 650–4000 cm−1. A background scan was performed to eliminate CO2 interference (approx. 2300–2400 cm−1). Polymer identification was made by comparing the particles spectra to a reference library provided by the manufacturer..
Acquisition Information (collection)
Instrument
  • Manta net
Last Modified: 2023-08-06T22:28:46Z
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