PMID- 37313682
OWN - NLM
STAT- MEDLINE
DCOM- 20230721
LR  - 20230721
IS  - 2050-7895 (Electronic)
IS  - 2050-7887 (Linking)
VI  - 25
IP  - 7
DP  - 2023 Jul 19
TI  - Monitoring microplastic-contaminant sorption processes in real-time using 
      membrane introduction mass spectrometry.
PG  - 1169-1180
LID - 10.1039/d3em00083d [doi]
AB  - Microplastics are environmentally ubiquitous and their role in the fate and 
      distribution of trace contaminants is of emerging concern. We report the first 
      use of membrane introduction mass spectrometry to directly monitor the rate and 
      extent of microplastic-contaminant sorption. Target contaminant (naphthalene, 
      anthracene, pyrene, and nonylphenol) sorption behaviours were examined at 
      nanomolar concentrations with four plastic types: low density polyethylene 
      (LDPE), high density polyethylene (HDPE), polypropylene (PP), and polystyrene 
      (PS). Under the conditions employed here, short-term sorption kinetics were 
      assessed using on-line mass spectrometry for up to one hour. Subsequent sorption 
      was followed by periodically measuring contaminant concentrations for up to three 
      weeks. Short-term sorption followed first order kinetics with rate constants that 
      scaled with hydrophobicity for the homologous series of polycyclic aromatic 
      hydrocarbons (PAHs). Sorption rate constants on LDPE for equimolar solutions of 
      naphthalene, anthracene, and pyrene were 0.5, 2.0, and 2.2 h(-1), respectively, 
      while nonylphenol did not sorb to pristine plastics over this time period. 
      Similar trends among contaminants were observed for other pristine plastics with 
      4- to 10-fold faster sorption rates associated with LDPE when compared to PS and 
      PP. Sorption was largely complete after three weeks, with the percent analyte 
      sorbed ranging from 40-100% across various microplastic-contaminant combinations. 
      Photo-oxidative ageing of LDPE had little effect on PAH sorption. However, a 
      marked increase in nonylphenol sorption was consistent with increased 
      hydrogen-bonding interactions. This work provides kinetic insights into surface 
      interactions and describes a powerful experimental platform to directly observe 
      contaminant sorption behaviours in complex samples under a variety of 
      environmentally relevant conditions.
FAU - Zvekic, Misha
AU  - Zvekic M
AUID- ORCID: 0000-0003-1653-3074
AD  - Applied Environmental Research Laboratories (AERL), Department of Chemistry, 
      Vancouver Island University, Nanaimo, British Columbia, V9R 5S5, Canada. 
      Erik.Krogh@viu.ca.
AD  - Department of Chemistry, University of Victoria, Victoria, British Columbia, V8P 
      5C2, Canada.
FAU - Vandergrift, Gregory W
AU  - Vandergrift GW
AD  - Applied Environmental Research Laboratories (AERL), Department of Chemistry, 
      Vancouver Island University, Nanaimo, British Columbia, V9R 5S5, Canada. 
      Erik.Krogh@viu.ca.
AD  - Department of Chemistry, University of Victoria, Victoria, British Columbia, V8P 
      5C2, Canada.
FAU - Tong, Christine C
AU  - Tong CC
AD  - Applied Environmental Research Laboratories (AERL), Department of Chemistry, 
      Vancouver Island University, Nanaimo, British Columbia, V9R 5S5, Canada. 
      Erik.Krogh@viu.ca.
FAU - Gill, Chris G
AU  - Gill CG
AUID- ORCID: 0000-0001-7696-5894
AD  - Applied Environmental Research Laboratories (AERL), Department of Chemistry, 
      Vancouver Island University, Nanaimo, British Columbia, V9R 5S5, Canada. 
      Erik.Krogh@viu.ca.
AD  - Department of Chemistry, University of Victoria, Victoria, British Columbia, V8P 
      5C2, Canada.
AD  - Department of Chemistry, Simon Fraser University, Burnaby, BC, V5A 1S6, Canada.
AD  - Department of Environmental and Occupational Health Sciences, University of 
      Washington, Seattle, Washington 98195, USA.
FAU - Krogh, Erik T
AU  - Krogh ET
AUID- ORCID: 0000-0003-0575-7451
AD  - Applied Environmental Research Laboratories (AERL), Department of Chemistry, 
      Vancouver Island University, Nanaimo, British Columbia, V9R 5S5, Canada. 
      Erik.Krogh@viu.ca.
AD  - Department of Chemistry, University of Victoria, Victoria, British Columbia, V8P 
      5C2, Canada.
LA  - eng
PT  - Journal Article
DEP - 20230719
PL  - England
TA  - Environ Sci Process Impacts
JT  - Environmental science. Processes & impacts
JID - 101601576
RN  - 0 (Plastics)
RN  - 0 (Microplastics)
RN  - 79F6A2ILP5 (nonylphenol)
RN  - 9002-88-4 (Polyethylene)
RN  - 0 (Water Pollutants, Chemical)
RN  - 2166IN72UN (naphthalene)
RN  - 0 (Naphthalenes)
RN  - 9E0T7WFW93 (pyrene)
RN  - 0 (Pyrenes)
RN  - 0 (Polystyrenes)
RN  - 0 (Polypropylenes)
RN  - EH46A1TLD7 (anthracene)
RN  - 0 (Anthracenes)
SB  - IM
MH  - *Plastics/analysis
MH  - Microplastics
MH  - Polyethylene
MH  - Adsorption
MH  - *Water Pollutants, Chemical/analysis
MH  - Naphthalenes/analysis
MH  - Pyrenes/analysis
MH  - Polystyrenes/chemistry
MH  - Polypropylenes
MH  - Mass Spectrometry
MH  - Anthracenes/analysis
EDAT- 2023/06/14 06:42
MHDA- 2023/07/21 06:43
CRDT- 2023/06/14 04:43
PHST- 2023/07/21 06:43 [medline]
PHST- 2023/06/14 06:42 [pubmed]
PHST- 2023/06/14 04:43 [entrez]
AID - 10.1039/d3em00083d [doi]
PST - epublish
SO  - Environ Sci Process Impacts. 2023 Jul 19;25(7):1169-1180. doi: 
      10.1039/d3em00083d.