Application of the target lipid model to assess toxicity of heterocyclic aromatic compounds to aquatic organisms

Aug 15, 2021

Heterocyclic aromatic compounds can be found in crude oil and coal and often co‐exist in environmental samples with their homocyclic aromatic counterparts. The target lipid model (TLM) is a modeling framework that relates aquatic toxicity to the octanol–water...

Determining the temperature dependency of biodegradation kinetics for 34 Hydrocarbons while avoiding chemical and microbial confounding factors

Aug 6, 2021

Biodegradation kinetics data are keystone for evaluating the environmental persistence and risk of chemicals. Biodegradation kinetics depend highly on the prevailing temperature, which influences microbial community structures, metabolic rates, and chemical...

Distribution of ETBE-degrading microorganisms and functional capability in groundwater, and implications for characterising aquifer ETBE biodegradation potential

Aug 4, 2021

Microbes in aquifers are present suspended in groundwater or attached to the aquifer sediment. Groundwater is often sampled at gasoline ether oxygenate (GEO)-impacted sites to assess the potential biodegradation of organic constituents. However, the distribution of...

A comparison of three methods to assess natural source zone depletion at paved fuel retail sites

Jun 28, 2021

Natural source zone depletion (NSZD) encompasses all processes that result in petroleum hydrocarbon light non-aqueous phase liquid (LNAPL) mass loss. Vertical gas transport between the subsurface and atmosphere is a key component of NSZD. Gas exchange with the...

Improving our understanding of the environmental persistence of chemicals

May 28, 2021

Significant progress has been made in the scientific understanding of factors that influence the outcome of biodegradation tests used to assess the persistence (P) of chemicals. This needs to be evaluated to assess whether recently acquired knowledge could enhance...