Dataset Overview | National Centers for Environmental Information (NCEI)

Abundance of microplastics in beaches along the Thoothukudi coast, Gulf of Mannar region, India, during 2021-01-03 to 2021-06-08 (NCEI Accession 0282703)

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This study estimated the concentration of microplastics (i.e. plastics measuring less than 5mm; reported in unit of items/kg d.w) in beach sediments along the Thoothukudi coast, Gulf of Mannar region, India, during 2021-01-03 to 2021-06-08. Microplastics in the sediments were collected using a shovel. This dataset contains the results from all 36 sediment samples, in a spreadsheet format.

Dataset Citation

Cite as: Keerthika, Kalaiselvan; Padmavathy, Pandurangan; Rani, Velu; Jeyashakila, Robinson; Aanand, Samraj; Kutty, Ranjeet (2023). Abundance of microplastics in beaches along the Thoothukudi coast, Gulf of Mannar region, India, during 2021-01-03 to 2021-06-08 (NCEI Accession 0282703). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0282703. Accessed [date].

Dataset Identifiers

ISO 19115-2 Metadata

gov.noaa.nodc:0282703

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Download Data	HTTPS (download) Navigate directly to the URL for data access and direct download. FTP (download) These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP).
Distribution Formats	Excel
Ordering Instructions	Contact NCEI for other distribution options and instructions.
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	2021-01-03 to 2021-06-08
Spatial Bounding Box Coordinates	West: 78.117547 East: 78.3651 South: 8.493267 North: 9.0765
Spatial Coverage Map

General Documentation

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Descriptive Information
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Associated Resources

The NOAA NCEI Global Marine Microplastics Database (1972-present)
- NCEI Collection
  Navigate directly to the URL for data access and direct download.
Keerthika K, Padmavathy P, Rani V, Jeyashakila R, Aanand S, Kutty R. Contamination of microplastics, surface morphology and risk assessment in beaches along the Thoothukudi coast, Gulf of Mannar region. Environmental Science and Pollution Research. 2022 Jun 03; 29(50): 75525–75538.
- https://doi.org/10.1007/s11356-022-21054-8
  related journal article

gov.noaa.nodc:NCEI-Marine-Microplastics

Publication Dates	publication: 2023-09-15
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: M8NU9G
Purpose	These microplastic concentrations data were collected in order to determine their abundance in beach sediments along the Thoothukudi coast, Gulf of Mannar region, India, during 2021-01-03 to 2021-06-08
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: Keerthika, Kalaiselvan; Padmavathy, Pandurangan; Rani, Velu; Jeyashakila, Robinson; Aanand, Samraj; Kutty, Ranjeet (2023). Abundance of microplastics in beaches along the Thoothukudi coast, Gulf of Mannar region, India, during 2021-01-03 to 2021-06-08 (NCEI Accession 0282703). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0282703. Accessed [date].
Cited Authors	Keerthika, Kalaiselvan Fisheries College and Research Institute Padmavathy, Pandurangan Rani, Velu Jeyashakila, Robinson Aanand, Samraj Kutty, Ranjeet
Contributors	Fisheries College and Research Institute (FC&RI)
Resource Providers	Kalaiselvan Keerthika Fisheries College and Research Institute (FC&RI) Fisheries College and Research Institute (FC&RI)
Points of Contact	Ebenezer Nyadjro Mississippi State University; Northern Gulf Institute (NGI)
Publishers	NOAA National Centers for Environmental Information

Theme keywords	NODC DATA TYPES THESAURUS microplastic concentration NODC OBSERVATION TYPES THESAURUS in situ laboratory analyses WMO_CategoryCode oceanography Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > OCEANS > WATER QUALITY > SEA SURFACE CONTAMINANTS > MICROPLASTIC CONCENTRATION
Data Center keywords	NODC COLLECTING INSTITUTION NAMES THESAURUS Fisheries College and Research Institute NODC SUBMITTING INSTITUTION NAMES THESAURUS Fisheries College and Research Institute
Instrument keywords	NODC INSTRUMENT TYPES THESAURUS Fourier-transform infrared (FTIR) spectrometer microscope sediment sieve Global Change Master Directory (GCMD) Instrument Keywords FTIR SPECTROMETER > Fourier Transform Infrared Spectrometer GRANULOMETRIC SIEVES MICROSCOPES > MICROSCOPES Provider Instruments shovel
Place keywords	NODC SEA AREA NAMES THESAURUS Gulf of Mannar Indian Ocean Global Change Master Directory (GCMD) Location Keywords OCEAN > INDIAN OCEAN
Keywords	NCEI ACCESSION NUMBER 0282703

Use Constraints	Cite as: Keerthika, Kalaiselvan; Padmavathy, Pandurangan; Rani, Velu; Jeyashakila, Robinson; Aanand, Samraj; Kutty, Ranjeet (2023). Abundance of microplastics in beaches along the Thoothukudi coast, Gulf of Mannar region, India, during 2021-01-03 to 2021-06-08 (NCEI Accession 0282703). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0282703. 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.
Fees	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	2023-09-15T17:52:42Z - NCEI Accession 0282703 v1.1 was published.
Output Datasets	NCEI Accession 0282703 v1.1 NCEI Accession 0282703 v1.1 (download) published 2023-09-15T17:52:42Z

Lineage information for: dataset
Processing Steps	Parameter or Variable: microplastic concentration (measured); Units: items/kg dry weight sediment; Observation Category: in situ; Sampling Instrument: shovel; Sampling and Analyzing Method: This study was carried out to estimate the amount of microplastics in six sampling sites along the Thoothukudi Region, southeast India. Sediment samples were collected from the six sampling sites: Vembar (VE), Vellapatti (VP), Threspuram (TH), Spic Nagar (SN), Punnakayal (PN) and Thiruchendur (TC), during January 2021-June 2021. Sediments from the sampling sites were collected in from a foreshore area by placing a quadrant of 1 m2 size. A shovel was used for collecting the sediment samples of about 3 kg at a depth of 4 cm, and were taken in pre-cleaned glass bottles. The collected sediment and water samples were taken to the laboratory for extraction of microplastics. The sampled sediment was dried at 600Cin a hot air oven. After, it was with a 500-μm sieve to remove larger particles. The sieved samples were homogenized well and 30% H2O2 was added to digest the organic matter at room temperature (avg temp —31 °C) present in the sample. After digestion, the sediment samples were subjected to density separation. A saturated NaCl solution was used for the floatation of low-density polymers, and a saturated ZnCl2 solution was used for the floatation of low-and high-density polymers. The supernatant was filtered in the vacuum filtration unit with the Whatman filter paper 1. After the filtration of all the samples, the filter papers were sealed in the Petri dishes, labelled and dried in a hot air oven at 40 °C. The dried filter papers from all the samples were examined under a stereomicroscope with the eyepiece to measure and quantify MPs. MPs abundance were expressed as particles/kg. The polymer composition of the microplastics was investigated using attenuated total reflectance (ATR)–Fourier transform infrared spectroscopy (FTIR). A total of 700 particles representing fragments, fibers, irregular and foam particles (30% of the total particles) were examined in the ATR-FTIR system. The spectrum was obtained at a spectral range of about 4000–400 cm−1 with the addition of 32 scans and with the resolution of 4 cm−1. By comparing the resulting spectra with the reference spectra, the polymer identification was done.; Data Quality Method: Several measures were applied to minimize the potential microplastic contamination during the whole microplastic analysis procedures. To reduce background contamination of microplastics during the analysis, blank experiments were carried out with deionized water in the pre-cleaned beaker. They were then analyzed for the presence of airborne contamination during the investigation, and the results showed the absence of microplastics in the blank samples. To avoid cross contamination, lab coats and surgical gloves were worn during the analysis. The glassware and equipment were washed with distilled water at the start and end of the analysis..

Lineage information for: dataset

Processing Steps

Parameter or Variable: microplastic concentration (measured); Units: items/kg dry weight sediment; Observation Category: in situ; Sampling Instrument: shovel; Sampling and Analyzing Method: This study was carried out to estimate the amount of microplastics in six sampling sites along the Thoothukudi Region, southeast India. Sediment samples were collected from the six sampling sites: Vembar (VE), Vellapatti (VP), Threspuram (TH), Spic Nagar (SN), Punnakayal (PN) and Thiruchendur (TC), during January 2021-June 2021. Sediments from the sampling sites were collected in from a foreshore area by placing a quadrant of 1 m2 size. A shovel was used for collecting the sediment samples of about 3 kg at a depth of 4 cm, and were taken in pre-cleaned glass bottles. The collected sediment and water samples were taken to the laboratory for extraction of microplastics. The sampled sediment was dried at 600Cin a hot air oven. After, it was with a 500-μm sieve to remove larger particles. The sieved samples were homogenized well and 30% H2O2 was added to digest the organic matter at room temperature (avg temp —31 °C) present in the sample. After digestion, the sediment samples were subjected to density separation. A saturated NaCl solution was used for the floatation of low-density polymers, and a saturated ZnCl2 solution was used for the floatation of low-and high-density polymers. The supernatant was filtered in the vacuum filtration unit with the Whatman filter paper 1. After the filtration of all the samples, the filter papers were sealed in the Petri dishes, labelled and dried in a hot air oven at 40 °C. The dried filter papers from all the samples were examined under a stereomicroscope with the eyepiece to measure and quantify MPs. MPs abundance were expressed as particles/kg. The polymer composition of the microplastics was investigated using attenuated total reflectance (ATR)–Fourier transform infrared spectroscopy (FTIR). A total of 700 particles representing fragments, fibers, irregular and foam particles (30% of the total particles) were examined in the ATR-FTIR system. The spectrum was obtained at a spectral range of about 4000–400 cm−1 with the addition of 32 scans and with the resolution of 4 cm−1. By comparing the resulting spectra with the reference spectra, the polymer identification was done.; Data Quality Method: Several measures were applied to minimize the potential microplastic contamination during the whole microplastic analysis procedures. To reduce background contamination of microplastics during the analysis, blank experiments were carried out with deionized water in the pre-cleaned beaker. They were then analyzed for the presence of airborne contamination during the investigation, and the results showed the absence of microplastics in the blank samples. To avoid cross contamination, lab coats and surgical gloves were worn during the analysis. The glassware and equipment were washed with distilled water at the start and end of the analysis..

Acquisition Information (collection)
Instrument	Fourier-transform infrared (FTIR) spectrometer microscope sediment sieve

Last Modified: 2023-09-20T12:22:00Z
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Abundance of microplastics in beaches along the Thoothukudi coast, Gulf of Mannar region, India, during 2021-01-03 to 2021-06-08 (NCEI Accession 0282703)

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