Database Review Organic Gaseous Pollutants in Indoor Conservation Spaces

Sheet 1 - Database 1: Detection Instruments - Active (A) or Passive (P) samplers and Continuous monitoring (C) devices for detecting concentration of the main organic gaseous pollutants in indoor conservation spaces.

- Rows: Instrumentation employed for detecting each gaseous organic pollutant.

- Column headings: Commercial name; Operation type (i.e., Laboratory-analysed or Direct-read); Working principle (e.g., Liquid Chromatography, Ion Chromatography, Gas Chromatography); Typical exposure time (e.g., minutes, hours, days); Time average (i.e., hourly, weekly, monthly); Number of sites investigated employing this instrumentation; Article references.

Sheet 2 - Database 2: Pollutant Concentrations - Details on case-study sites, building features, sampling conditions, and detected concentrations for each of the main organic gaseous pollutants in indoor conservation spaces.

- Rows: Case studies, categorized by single pollutant.

- Column headings: Site name; Cultural Heritage Material stored at the site; Reference; Site type (i.e., museum/gallery, archive/library, worship place, palace/castle); Historical or Modern Building; Country; European or non-European country; City; Area (e.g., urban, rural); Koppen classification; Sampling position (e.g., exhibition room, storage, enclosure); Heating Ventilation and Air Conditioning system (presence or absence); Temperature and Relative Humidity monitoring (performed or not performed); Reference to suggested limits (presence or absence); Maximum rate of air exchanges within the conservation environment (Air Changes per Hour); Instrument type; Instrument name; Sampling length; Sampling rate (and total volume); Mean indoor concentration (ppb); Minimum indoor concentration (ppb); Maximum indoor concentration (ppb); Mean outdoor concentration (ppb); Minimum outdoor concentration (ppb); Maximum outdoor concentration (ppb); Indoor/Outdoor ratio.

Data extraction:
Concentration data were extracted from scientific literature (references). Concentration values originally provided as “μg m−3” were converted to “ppb” for consistency and comparability, applying standard conversion methods based on molecular weight and standard conditions of temperature and pressure.