Evidence map›Paper›PMID 25062546›Full record

ArticleEnvironmental science and pollution research international2015

Polybrominated diphenyl ethers listed as Stockholm Convention POPs, other brominated flame retardants and heavy metals in e-waste polymers in Nigeria.

Omotayo Sindiku, Joshua Babayemi, Oladele Osibanjo, Martin Schlummer, Mathias Schluep, Alan Watson, Roland Weber

Abstract read
PubMed Publisher
In one paragraph

Article in Environmental science and pollution research international, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

18 citing papers in PubMed.

  1. Article
  2. Article
  3. A Children's Health Perspective on Nano- and Microplastics.Environmental health perspectives · 2022
    Article
  4. Review
  5. E-Waste in Africa: A Serious Threat to the Health of Children.International journal of environmental research and public health · 2021
    Review
  6. Article
  7. Review
  8. Article
  9. Public Health Burden of E-waste in Africa.Journal of health & pollution · 2019
    Review
  10. Article
  11. Serum bromine concentrations in horses in Japan.The Journal of veterinary medical science · 2018
    Article
  12. Factors that affect the willingness of residents to pay for solid waste management in Hong Kong.Environmental science and pollution research international · 2018
    Article
  13. Article
  14. Article
  15. Article
  16. The need for better management and control of POPs stockpiles.Environmental science and pollution research international · 2015
    Article
  17. Polybrominated dibenzo-p-dioxins and dibenzofurans (PBDD/Fs) in e-waste plastic in Nigeria.Environmental science and pollution research international · 2015
    Article
  18. The 12th International HCH and Pesticides Forum in Kiev/Ukraine.Environmental science and pollution research international · 2015
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Omotayo SindikuDepartment of Chemistry, Faculty of Science, University of Ibadan, Ibadan, Nigeria.
Joshua BabayemiDepartment of Chemistry, Faculty of Science, University of Ibadan, Ibadan, Nigeria.
Oladele OsibanjoDepartment of Chemistry, Faculty of Science, University of Ibadan, Ibadan, Nigeria. oosibanjo@gmail.com.
Martin SchlummerFraunhofer Institute for Process Engineering and Packaging, 85354, Freising, Germany.
Mathias SchluepEmpa Technology and Society Lab, 9014, St. Gallen, Switzerland.
Alan WatsonPublic Interest Consultant, Swansea, SA4 3TY, Wales, UK.
Roland WeberPOPs Environmental Consulting, 73527, Schwäbisch Gmünd, Germany. roland.weber10@web.de.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Polybrominated diphenyl ethers (PBDEs) were the first brominated persistent organic pollutants (POPs) listed in the Stockholm Convention. Parties to the convention are currently establishing inventories for developing action plans for the environmentally sound management of PBDE-containing materials. The major use of commercial octabromodiphenyl ether (c-OctaBDE) has been in casings from cathode ray tube (CRT) TVs and computer monitors. Large quantities of used e-waste and electronic equipment have been exported to developing countries with Nigeria being a major importer in Africa. The casings from 382 TVs and computers imported from major world regions to Nigeria were sampled in backyards and waste dumps. The samples were screened with X-ray flourescence (XRF) for bromine and analysed by gas chromatography/ electron capture detection (GC/ECD) for brominated flame retardants (BFRs). A high proportion of the CRT casings (61 %) contained more than 10,000 ppm bromine from BFRs. Decabromodiphenyl ether (DecaBDE) was the major flame retardant used in TV sets and tetrabromobisphenol A (TBBPA) for computer CRTs.The screening suggests that average PBDE levels (of c-OctaBDE + DecaBDE) in Nigerian-stockpiled CRT casings were 1.1 % for TV and 0.13 % for PC CRTs. These are above the Restriction of Hazardous Substances (RoHS) limit and should be separated for RoHS compliant recycling. The Nigerian e-waste inventory of 237,000 t of CRT plastic would therefore contain approx. 594 t c-OctaBDE and 1,880 t of DecaBDE. In Nigeria, as for most developing countries, there is currently no adequate e-waste management, plastic separation or destruction capacity. The data highlight the urgent need to develop environmentally sound management for this large material flow.

Indexed as

Electronic WasteEnvironmental MonitoringFlame RetardantsHalogenated Diphenyl EthersInternational CooperationMetals, HeavyNigeriaPolybrominated BiphenylsPolymersdecabromobiphenyl etherFlame RetardantsHalogenated Diphenyl EthersMetals, HeavyPolybrominated BiphenylsPolymersBFRsInventoryPBDEPlastic recyclingRoHSWEEE

Identifiers

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.