PMID- 34624337
OWN - NLM
STAT- MEDLINE
DCOM- 20211220
LR  - 20211220
IS  - 1879-1298 (Electronic)
IS  - 0045-6535 (Linking)
VI  - 288
IP  - Pt 2
DP  - 2022 Feb
TI  - Assessment of four rounds of interlaboratory tests within the UNEP-coordinated 
      POPs projects.
PG  - 132441
LID - S0045-6535(21)02913-1 [pii]
LID - 10.1016/j.chemosphere.2021.132441 [doi]
AB  - Since 2005, the United Nations Environment Programme (UNEP) has supported 
      developing countries with capacity building, including on-site training courses 
      and provision on laboratory materials and consumables, and analysis of samples 
      from Africa, Asia-Pacific and Latin America and the Caribbean (GRULAC) in 
      designated expert laboratories. In order to check the performance of laboratories 
      analyzing persistent organic pollutants (POPs) and giving trust into chemical 
      analytical results, four rounds of interlaboratory assessments (ILs) were 
      organized between 2010 and 2019. These were open to all POPs laboratories. In 
      total, 41 575 z-scores, as indicators of performance, were generated in these 
      four ILs; of these, 8 912 were from laboratories in countries supported by UNEP 
      projects and 3 923 were from expert laboratories; these together constitute 31% 
      of the total. 69% of all z-scores came from laboratories not participating in the 
      UNEP projects, especially from China, who recognized the importance of such 
      exercises for quality control at an early stage. The results showed that POPs 
      analytical capacity has increased over the years, but some gaps could not be 
      closed especially not when LC-MS/MS equipment is essential such as for PFAS and 
      congener-specific HBCD. Use of mass spectrometers provides better results than 
      ECD instruments due to the broad spectrum of organochlorine pesticides to be 
      analyzed under the Stockholm Convention. The main conclusion for all laboratories 
      is that interlaboratory assessments provide important and objective snapshots of 
      performance for the laboratories themselves and for external clients. The methods 
      used in any interlaboratory testing should be the same as during routine analysis 
      between such tests.
CI  - Copyright (c) 2021 The Authors. Published by Elsevier Ltd.. All rights reserved.
FAU - Fiedler, Heidelore
AU  - Fiedler H
AD  - Orebro University, School of Science and Technology, MTM Research Centre, SE-701 
      82, Orebro, Sweden. Electronic address: heidelore.fiedler@oru.se.
FAU - van der Veen, Ike
AU  - van der Veen I
AD  - Vrije Universiteit, Dept. Environment & Health, De Boelelaan 1085, NL-1081HV, 
      Amsterdam, the Netherlands.
FAU - de Boer, Jacob
AU  - de Boer J
AD  - Vrije Universiteit, Dept. Environment & Health, De Boelelaan 1085, NL-1081HV, 
      Amsterdam, the Netherlands.
LA  - eng
PT  - Journal Article
DEP - 20211005
PL  - England
TA  - Chemosphere
JT  - Chemosphere
JID - 0320657
RN  - 0 (Environmental Pollutants)
SB  - IM
MH  - Chromatography, Liquid
MH  - *Environmental Pollutants
MH  - Humans
MH  - Laboratories
MH  - Tandem Mass Spectrometry
MH  - United Nations
OTO - NOTNLM
OT  - Core matrices
OT  - Performance trends and indicators
OT  - Persistent organic pollutants
OT  - Regular participation
OT  - Stockholm Convention on POPs
EDAT- 2021/10/09 06:00
MHDA- 2021/12/21 06:00
CRDT- 2021/10/08 20:13
PHST- 2021/07/31 00:00 [received]
PHST- 2021/09/25 00:00 [revised]
PHST- 2021/09/30 00:00 [accepted]
PHST- 2021/10/09 06:00 [pubmed]
PHST- 2021/12/21 06:00 [medline]
PHST- 2021/10/08 20:13 [entrez]
AID - S0045-6535(21)02913-1 [pii]
AID - 10.1016/j.chemosphere.2021.132441 [doi]
PST - ppublish
SO  - Chemosphere. 2022 Feb;288(Pt 2):132441. doi: 10.1016/j.chemosphere.2021.132441. 
      Epub 2021 Oct 5.