Chlorinated paraffins in urban air in Nordic countries

On behalf of the Joint Nordic Screening Group, NILU has performed a study on short, medium and long-chain chlorinated paraffins in air samples from urban sites in the capitals of Finland, Iceland and Norway. Air samples were collected in two seasons in 2022; in wintertime when studded tires were use...

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Bibliographic Details
Main Authors: Bohlin-Nizzetto, Pernilla, Borgen, Anders, Nipen, Maja
Format: Report
Language:English
Published: NILU 2023
Subjects:
Online Access:https://hdl.handle.net/11250/3049109
Description
Summary:On behalf of the Joint Nordic Screening Group, NILU has performed a study on short, medium and long-chain chlorinated paraffins in air samples from urban sites in the capitals of Finland, Iceland and Norway. Air samples were collected in two seasons in 2022; in wintertime when studded tires were used, and in summertime when normal tires were used. The highest concentrations were measured for MCCPs in Helsinki and LCCPs in Reykjavik. A majority of the samples from Helsinki (71%) had LCCPs levels below the field blanks, and a majority of the samples from Oslo (100% in summer and 60% in winter) had SCCPs levels below the field blanks. The concentrations of MCCPs were higher than the concentrations of SCCPs. For all sites except Reykjavik, the concentrations of LCCPs were similar to concentrations of SCCPs. The results for Helsinki and Oslo indicate higher concentrations in wintertime than summertime. På vegne av Nordisk Ministerråds Screening Gruppe, har NILU utført målinger av kortkjedet, mellomkjedet og langkjedet klorparafiner i luftprøver fra urbane målestasjoner i hovedsteder i Finland, Island og Norge. Prøvene ble samlet inn under to sesonger; vintertid da vinterdekk brukes, og sommertid da vanlige dekk brukes. De høyeste konsentrasjonene ble målt for MCCPs i Helsinki og LCCPs i Reykjavik. I Helsinki var en stor del av prøvene (71%) lavere enn feltblinder for LCCPs, og i Oslo var SCCPs lavere enn feltblinder i 100% av sommerprøvene og 60% av vinterprøvene. Høyere konsentrasjon av MCCPs enn SCCPs ble funnet i de fleste prøvene, og konsentrasjonen av LCCPs var på samme nivå som SCCPs i alle prøver uten Reykjavik. Resultatene indikere høyere konsentrasjoner på vintertid enn sommertid. publishedVersion