Estimates of the number of chemicals in household use range between 30,000 and 70,000 . Nevertheless, most studies investigating dust so far have involved targeted analyses i.e., limited only to dozens of chemicals , , while house dust can be contaminated with a broad range of chemicals including pesticides, personal care products, and plasticizers, which can only be explored in greater detail using a non-target approach , . PubChem, which contains 118 million chemicals as of July 2024, is one source of such information , but is too large for efficient cheminformatics workflows. Instead, the PubChemLite for Exposomics collection leverages the comprehensive knowledgebase within PubChem to form a relevant subset for exposomics studies, compiled from ten different categories in the PubChem Compound Table of Contents (TOC) Classification Browser , comprising ~400,000 chemicals , . Other environmentally relevant information sources include the NORMAN Suspect List Exchange (NORMAN-SLE) , which is a collection of more than 100 lists of chemicals covering a wide range of chemical classes contributed by the environmental community and compiled by the NORMAN network , . NORMAN-SLE lists are given a "S" number and code and include collections such as cosmetics (e.g., S13 EUCOSMETICS ), chemicals registered for use in Europe exceeding one tonne per year (S32 REACH2017 ), and neurotoxicants (e.g., S37 LITMINEDNEURO ). In 2016, the NORMAN network organized a collaborative non-target trial on household dust, with close to 2,350 compounds identified or tentatively identified in those dust samples . The results are also available in the NORMAN-SLE as suspect list (S35 INDOORCT16) , . Both gas chromatography-mass spectrometry (GC-MS), and liquid chromatography-mass spectrometry (LC-MS) were used, with only 5% of the detected compounds overlapping between these two techniques. While LC-MS allowed the detection of glycols, pharmaceuticals, pesticides, and biogenic compounds in the samples, GC-MS detected more non-polar compounds, including hydrocarbons and chlorinated paraffins .