Michael McLachlan

Professor
Room: T524
Phone: +46 8 674 7228
Michael.McLachlan@aces.su.se

About me

My research is about the behaviour of organic contaminants in the environment. The overall goal is to describe the relationship between emission of a chemical and its levels in tissue in humans and wildlife. This entails an understanding of the major processes that influence the environmental fate and bioaccumulation of organic chemicals, and most of my research has been devoted to furthering this process understanding. I study chemical fate in both the terrestrial and the aquatic environments, whereby phase partitioning (e.g. to aerosols, soil, vegetation, plankton), chemical transport between environmental compartments (e.g. air-soil, air-vegetation, air-sea exchange), and bioaccumulation (from primary producers up to and including humans) have been my most active areas. Currently I am currently particularly interested in chemical persistence.

I apply a range of tools in my endeavours including:
– Methods development. I have a strong interest in sensitive and precise analytical methods since they open up unique opportunities for studying contaminant behaviour in the field. Coupled to this is work developing sampling procedures with minimal artefacts and clever sampling characteristics.
– Laboratory experimentation. The controlled laboratory environment is ideal for establishing the fundamental principles of chemical behaviour. My experience in this area includes measuring partitioning in diverse matrices and conducting bioaccumulation experiments in terrestrial vegetation and algae.
– Semi-controlled field studies. Studying contaminant behaviour in the field is invaluable to evaluating the applicability of theory and laboratory research to the real world. Creating semi-controlled environments which minimally disturb the natural state is a difficult challenge, but one that yields great scientific rewards. Examples in my work include the ?natural? mass balance for evaluating dietary uptake of contaminants or greenhouses ventilated in various ways for studying uptake pathways in vegetation.
– Monitoring. Whether in a concerted and coordinated field campaign or as a routine trend activity, monitoring is essential for measuring the true state of the environment and for gleaning data for model validation. I have broad experience in designing and conducting field campaigns, be it in the atmosphere, on land or at sea, and in conceiving and executing trend monitoring programs.
– Mathematical modelling. Due to the complexities of chemical behaviour in the environment, mathematical modelling is both essential to synthesise knowledge and invaluable for identifying knowledge gaps and exploring hypotheses. I view my contributions to improving process descriptions in multimedia fate and bioaccumulation models as one of the most important outputs of my research.

Latest scientific papers

Socioeconomic status and public health in Australia: A wastewater-based study

Nikolaos I. Rousis; Zhe Li; Richard Bade; Michael S. McLachlan; Jochen F. Mueller; Jake W. O'Brien; Saer Samanipour; Benjamin J. Tscharke; Nikolaos S. Thomaidis; Kevin V. Thomas
2022 | Environ Int | 167

European scale assessment of the potential of ozonation and activated carbon treatment to reduce micropollutant emissions with wastewater

Pistocchi, A.; Alygizakisj, N.A.; Brack, W.; Boxall, A.; Cousins, I.T.; Drewes, J.E.; Finckh. S.; Gallé, T.; Launay, M.A.; McLachlan, M.S.; Petrovic, M.; Schulze, T.; Slobodnik, J.; Ternes, T.; Van Wezel, A.; Verlicchi, P.; Whalley, C.
2022 | Sci. Total Environ. | 848 (157124)

Removal of 293 organic compounds in 15 WWTPs studied with non-targeted suspect screening

Michael S. McLachlan; Zhe Li; Lisa Jonsson; Sarit Kaserzon; Jake W. O'Brien; Jochen F. Mueller
2022 | Environ. Sci. Water Res. Technol. | 8 (1423-1433)

Bioconcentration of Several Series of Cationic Surfactants in Rainbow Trout

Amelie Kierkegaard; Marcus Sundbom; Bo Yuan; James M. Armitage; Jon A. Arnot; Steven T. J. Droge; and Michael S. McLachlan
2021 | Environ. Sci. Technol.

The presence of selected UV filters in a freshwater recreational reservoir and fate in controlled experiments

O'Malley, E; McLachlan, MS; O'Brien, JW; Verhagen, R; Mueller, JF
2021 | Sci. Total Environ. | 754

All publications

Contaminant Chemistry

Pollutants in the environment: Where they come from, where they go, and who gets exposed.