The Use of a Droplet Collar Accessory Attached to a Portable near Infrared Instrument to Identify Methanol Contamination in Whisky.

The aim of this study was to evaluate the ability of a droplet collar accessory attached to a portable near-infrared (NIR) instrument to characterize the artificial contamination of methanol in commercial whisky samples. Unadulterated samples (n = 12) were purchased from local bottle shops where adulterated samples were created by adding methanol (99% pure methanol) at six levels (0.5%, 1%, 2%, 3%, 4% and 5% /) to the commercial whisky samples (controls).

A Systematic Review of Kissing as a Risk Factor for Oropharyngeal Gonorrhea or Chlamydia.

Background: Tongue kissing is a poorly studied risk factor for sexually transmitted infections (STIs). We undertook the first systematic review to assess whether kissing is a risk factor for gonorrhea or chlamydia of the oropharynx.

Methods: Online databases (MEDLINE, EMBASE, CINAHL, Web of Science, Cochrane) and reference lists were searched until September 30, 2022.

Legacy and emerging per- and polyfluoroalkyl substances (PFASs) in Australian biosolids.

Biosolids samples were collected from 19 Australian WWTPs during 2018 that cover a range of catchment types (urban, rural, industrial waste discharges) and treatment technologies. Samples were analysed for 44 PFAS using isotope dilution and alkaline extraction coupled with quantification with LC-MS/MS. The ΣPFAS mean concentration was 260 ng/g dry weight (dw) and ranged between 4.

Brominated flame retardants (BFRs) in Western Australian biosolids and implications for land application.

This study evaluates the prevalence of eight priority polybrominated diphenyl ethers (PBDEs; -28, -47, -99, -100, -153, -154, -183 and -209) and six novel brominated flame retardants (NBFRs; pentabromotoluene (PBT), pentabromoethylbenzene (PBEB), hexabromobenzene (HBB), 2-ethylhexyl-2,3,4,5-tetrabromobenzoate (EH-TBB), 1,2-bis(2,4,6-tribromophenoxy)ethane (BTBPE) and decabromodiphenyl ethane (DBDPE)) in biosolids samples from 15 wastewater treatment plants (WWTPs) in Western Australia. Analytes were extracted using selective pressurized liquid extraction (S-PLE) and quantified by gas chromatography coupled to tandem mass spectrometry (GC-MS/MS) operated in electron impact (EI) ionization mode. ∑PBDE levels in biosolids ranged from 11 to 18,000 μg/kg dw with a median concentration of 1800 μg/kg dw.

Dietary Uptake and Depuration Kinetics of Perfluorooctane Sulfonate, Perfluorooctanoic Acid, and Hexafluoropropylene Oxide Dimer Acid (GenX) in a Benthic Fish.

Per- and poly-fluoroalkyl substances (PFAS) are ubiquitously distributed throughout aquatic environments and can bioaccumulate in organisms. We examined dietary uptake and depuration of a mixture of 3 PFAS: perfluorooctanoic acid (PFOA; C HF O ), perfluorooctane sulfonate (PFOS; C HF SO ), and hexafluoropropylene oxide dimer acid (HPFO-DA; C HF O ; trade name GenX). Benthic fish (blue spot gobies, Pseudogobius sp.

Petroleum Hydrocarbon Contamination in Terrestrial Ecosystems-Fate and Microbial Responses.

Petroleum hydrocarbons represent the most frequent environmental contaminant. The introduction of petroleum hydrocarbons into a pristine environment immediately changes the nature of that environment, resulting in reduced ecosystem functionality. Natural attenuation represents the single, most important biological process which removes petroleum hydrocarbons from the environment.

An investigation into per- and polyfluoroalkyl substances (PFAS) in nineteen Australian wastewater treatment plants (WWTPs).

Quantifying the emissions of per- and polyfluoroalkyl substances (PFAS) from Australian wastewater treatment plants (WWTP) is of high importance due to potential impacts on receiving aquatic ecosystems. The new Australian PFAS National Environmental Management Plan recommends 0.23 ng L of PFOS as the guideline value for 99% species protection for aquatic systems.