Dataset Overview | National Centers for Environmental Information (NCEI)

Surface microplastics abundance in the Maowei Sea, a semi-closed mariculture bay in China, collected on 2017-10-11 (NCEI Accession 0280675)

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This study estimated the concentration of surface microplastics (i.e. plastics measuring less than 5 mm; reported in unit of particles/L) in the Maowei Sea, a semi-closed mariculture bay in China. The data was collected on 2017-10-11 using a 5L stainless steel sampler. This dataset contains the results from all 23 surface water samples, in a spreadsheet format.

Dataset Citation

Cite as: Zhu, Jingmin; Zhang, Qiang; Li, Yanping; Tan, Shudan; Kang, Zhenjun; Yu, Xueying; Lan, Wenlu; Cai, Li; Wang, Jingzhen; Shi, Huahong (2023). Surface microplastics abundance in the Maowei Sea, a semi-closed mariculture bay in China, collected on 2017-10-11 (NCEI Accession 0280675). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0280675. Accessed [date].

Dataset Identifiers

ISO 19115-2 Metadata

gov.noaa.nodc:0280675

Full Text · XML

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	2017-10-11 to 2017-10-11
Spatial Bounding Box Coordinates	West: 108.467381 East: 108.6039 South: 21.697086 North: 21.907837
Spatial Coverage Map

General Documentation

NCEI Dataset Landing Page
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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.
Zhu J, Zhang Q, Li Y, Tan S, Kang Z, Yu X, Lan W, Cai L, Wang J, Shi H. Microplastic pollution in the Maowei Sea, a typical mariculture bay of China. Science of The Total Environment. 2019 Mar 25; 658: 62–68. https://doi.org/10.1016/j.scitotenv.2018.12.192
- https://doi.org/10.1016/j.scitotenv.2018.12.192
  journal article

gov.noaa.nodc:NCEI-Marine-Microplastics

Publication Dates	publication: 2023-07-28
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: E28YL3
Purpose	These surface microplastic concentration data were collected in order to determine their abundance in the Maowei Sea, a semi-closed mariculture bay in China, during 2017-10-11
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: Zhu, Jingmin; Zhang, Qiang; Li, Yanping; Tan, Shudan; Kang, Zhenjun; Yu, Xueying; Lan, Wenlu; Cai, Li; Wang, Jingzhen; Shi, Huahong (2023). Surface microplastics abundance in the Maowei Sea, a semi-closed mariculture bay in China, collected on 2017-10-11 (NCEI Accession 0280675). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0280675. Accessed [date].
Cited Authors	Zhu, Jingmin Zhang, Qiang Li, Yanping Tan, Shudan Kang, Zhenjun Yu, Xueying Lan, Wenlu Cai, Li Wang, Jingzhen Beibu Gulf University Shi, Huahong
Contributors	Beibu Gulf University
Resource Providers	Jingzhen Wang Beibu Gulf University Beibu Gulf University
Points of Contact	Ebenezer Nyadjro Mississippi State University; Northern Gulf Institute (NGI)
Publishers	NOAA National Centers for Environmental Information
Acknowledgments	Related Funding Agency: Guangxi Education Department (grant # 2018KY0617, KY2016YB487) Related Funding Agency: Guangxi Natural Science Foundation (grant # 2016GXNSFBA380142, 2018JJB150065) Related Funding Agency: The Start-up Foundation of Qinzhou University (grant # 2018KYQD07) Related Funding Agency: National Natural Science Foundation of China (grant # 41776174, 41466001 and 4160010672)

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 Beibu Gulf University NODC SUBMITTING INSTITUTION NAMES THESAURUS Beibu Gulf University
Instrument keywords	NODC INSTRUMENT TYPES THESAURUS Fourier-transform infrared (FTIR) spectrometer microscope Global Change Master Directory (GCMD) Instrument Keywords FTIR SPECTROMETER > Fourier Transform Infrared Spectrometer MICROSCOPES > MICROSCOPES Provider Instruments stainless steel sampler
Place keywords	NODC SEA AREA NAMES THESAURUS South China Sea (Nan Hai) Global Change Master Directory (GCMD) Location Keywords OCEAN > PACIFIC OCEAN > WESTERN PACIFIC OCEAN > SOUTH CHINA SEA Provider Place Names Beibu Gulf
Keywords	NCEI ACCESSION NUMBER 0280675

Use Constraints	Cite as: Zhu, Jingmin; Zhang, Qiang; Li, Yanping; Tan, Shudan; Kang, Zhenjun; Yu, Xueying; Lan, Wenlu; Cai, Li; Wang, Jingzhen; Shi, Huahong (2023). Surface microplastics abundance in the Maowei Sea, a semi-closed mariculture bay in China, collected on 2017-10-11 (NCEI Accession 0280675). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0280675. 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	2023-07-28T23:12:30Z - NCEI Accession 0280675 v1.1 was published.
Output Datasets	NCEI Accession 0280675 v1.1 NCEI Accession 0280675 v1.1 (download) published 2023-07-28T23:12:30Z

Lineage information for: dataset
Processing Steps	Parameter or Variable: microplastic concentration (measured); Units: particles/L; Observation Category: in situ; Sampling Instrument: stainless steel sampler; Sampling and Analyzing Method: Sample collection was carried out on October 11, 2017. Although there was no rain that day, it had rained the previous 2 days. As the inner bay in the northwestern part of the Maowei Sea is filled with sinking mattresses, the sampling boat could not enter it. Microplastics in the surface water were collected from the Maowei Sea (S1−S20) and its three inflowing rivers (R1−R3). As a result of the numerous floating and sinking oyster mattresses across the Maowei Sea, it was impossible to tow a trawl net across many sites. A total of approximately 5 L of surface water samples was collected using a stainless-steel sampler, with three replicates taken separately at each sampling site. Water samples were filtered onto a 47-mm diameter filter membrane with a 20-μm pore size (Millipore NY2004700) using a vacuum system. Material collected on the filter was washed into a glass jar that was then filled with a 10% KOH solution (analytical reagent grade, Sinopharm Chemical Reagent). The jars were incubated at 40 °C and stirred for 48–72 h at 80 rpm. Digestates were filtered onto 47-mm diameter filter membranes with a 5-μm pore size, and the filter membranes were then placed in clean Petri dishes with lids and dried at room temperature for further examination. The filter membranes were observed under a Cnoptec SZ680 stereo microscope (Chongqing, China), with all images taken using an Axio Camdigital camera. The morphotypes of microplastics were identified using visual assessment. A number of conventional plastic-like and indeterminate particles were selected and verified using a micro-Fourier transformed infrared spectroscope (μ-FT-IR, Thermo Nicolet iN10 MX) in transmittance mode. Each spectrum was directly compared with the library of polymers provided by Thermo Fisher Scientific in their software (OMNIC Picta). Any spectrum that could be matched with a quality index of N60% was accepted. A total of 158 out of 1723 particles were identified, with 73% of the plastic-like particles confirmed as plastics. The final amount of microplastics was revised by removing the verified non-plastic particles.; Data Quality Method: To avoid contamination, all solutions, e.g., tap water and potassium hydroxide, were filtered through a 5-μm pore size filter membrane prior to use. All glassware and stainless-steel containers were rinsed three times with filtered tap water. The samples were covered with lids or tinfoil immediately after collection to avoid contamination from airborne microplastics. Five negative controls without samples were performed in the experimental design..

Lineage information for: dataset

Processing Steps

Parameter or Variable: microplastic concentration (measured); Units: particles/L; Observation Category: in situ; Sampling Instrument: stainless steel sampler; Sampling and Analyzing Method: Sample collection was carried out on October 11, 2017. Although there was no rain that day, it had rained the previous 2 days. As the inner bay in the northwestern part of the Maowei Sea is filled with sinking mattresses, the sampling boat could not enter it. Microplastics in the surface water were collected from the Maowei Sea (S1−S20) and its three inflowing rivers (R1−R3). As a result of the numerous floating and sinking oyster mattresses across the Maowei Sea, it was impossible to tow a trawl net across many sites. A total of approximately 5 L of surface water samples was collected using a stainless-steel sampler, with three replicates taken separately at each sampling site. Water samples were filtered onto a 47-mm diameter filter membrane with a 20-μm pore size (Millipore NY2004700) using a vacuum system. Material collected on the filter was washed into a glass jar that was then filled with a 10% KOH solution (analytical reagent grade, Sinopharm Chemical Reagent). The jars were incubated at 40 °C and stirred for 48–72 h at 80 rpm. Digestates were filtered onto 47-mm diameter filter membranes with a 5-μm pore size, and the filter membranes were then placed in clean Petri dishes with lids and dried at room temperature for further examination. The filter membranes were observed under a Cnoptec SZ680 stereo microscope (Chongqing, China), with all images taken using an Axio Camdigital camera. The morphotypes of microplastics were identified using visual assessment. A number of conventional plastic-like and indeterminate particles were selected and verified using a micro-Fourier transformed infrared spectroscope (μ-FT-IR, Thermo Nicolet iN10 MX) in transmittance mode. Each spectrum was directly compared with the library of polymers provided by Thermo Fisher Scientific in their software (OMNIC Picta). Any spectrum that could be matched with a quality index of N60% was accepted. A total of 158 out of 1723 particles were identified, with 73% of the plastic-like particles confirmed as plastics. The final amount of microplastics was revised by removing the verified non-plastic particles.; Data Quality Method: To avoid contamination, all solutions, e.g., tap water and potassium hydroxide, were filtered through a 5-μm pore size filter membrane prior to use. All glassware and stainless-steel containers were rinsed three times with filtered tap water. The samples were covered with lids or tinfoil immediately after collection to avoid contamination from airborne microplastics. Five negative controls without samples were performed in the experimental design..

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

Last Modified: 2023-07-29T12:18:54Z
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Surface microplastics abundance in the Maowei Sea, a semi-closed mariculture bay in China, collected on 2017-10-11 (NCEI Accession 0280675)

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