## 5 Comparison of Emission Results Found in the Literature
European larch was the only sample reported to emit pentanal (sapwood, 29 \(\upmu\)g\(\cdot\)m\({}^{-3}\)), while Norway spruce showed the highest concentration of nonanal (heartwood, 61 \(\upmu\)g\(\cdot\)m\({}^{-3}\)). Similarly, a comprehensive study by [PERSON] (2021) [91] using ISO 16000-3, VDI 4301-7 [140], and ISO 16000-9 evaluated VOC emissions from several different wood types and WBPs, such as laminated veneer lumber made from different wood types (beech and poplar) and adhesives (MUF, PF and polyvinyl acetate), plywood, PB, and OSB. Emissions were measured after a maximum testing period of three days. Among solid wood samples, oak presented lower emissions of most compounds, namely formaldehyde (7-29 \(\upmu\)g\(\cdot\)m\({}^{-3}\)), acetaldehyde (6-18 \(\upmu\)g\(\cdot\)m\({}^{-3}\)), propanal (<1 \(\upmu\)g\(\cdot\)m\({}^{-3}\)), acetone (<3-31 \(\upmu\)g\(\cdot\)m\({}^{-3}\)), formic acid (68-172 \(\upmu\)g\(\cdot\)m\({}^{-3}\)), and acetic acid (172-2876 \(\upmu\)g\(\cdot\)m\({}^{-3}\)). In contrast, solid pine wood showed some of the highest values for formaldehyde (28-82 \(\upmu\)g\(\cdot\)m\({}^{-3}\)), acetaldehyde (60-197 \(\upmu\)g\(\cdot\)m\({}^{-3}\)), propanal (4-13 \(\upmu\)g\(\cdot\)m\({}^{-3}\)), acetone (210-705 \(\upmu\)g\(\cdot\)m\({}^{-3}\)), formic acid (293-346 \(\upmu\)g\(\cdot\)m\({}^{-3}\)), and acetic acid (464-818 \(\upmu\)g\(\cdot\)m\({}^{-3}\)). Laminated veneer lumber samples had some of the lowest VOC emission values, as seen for formaldehyde (PF-beech: 2-6 \(\upmu\)g\(\cdot\)m\({}^{-3}\); polyvinyl acetate-beech: 12-13 \(\upmu\)g\(\cdot\)m\({}^{-3}\)); MUF-beech: 16-23 \(\upmu\)g\(\cdot\)m\({}^{-3}\)), acetaldehyde (MUF-beech: 16-80 \(\upmu\)g\(\cdot\)m\({}^{-3}\); MUF-polar: 10-34 \(\upmu\)g\(\cdot\)m\({}^{-3}\)), acetone (PF-beech: 5-24 \(\upmu\)g\(\cdot\)m\({}^{-3}\)), propanal (<3 \(\upmu\)g\(\cdot\)m\({}^{-3}\) for all samples), and formic acid (MUF-polar: 19-44 \(\upmu\)g\(\cdot\)m\({}^{-3}\)). Commercial samples such as PB, plywood, and OSB had higher values and ranges for the majority of the determined compounds, for example, formaldehyde (PB: 39-243 \(\upmu\)g\(\cdot\)m\({}^{-3}\); plywood: 15-201 \(\upmu\)g\(\cdot\)m\({}^{-3}\)), acetaldehyde (PB: 45-168 \(\upmu\)g\(\cdot\)m\({}^{-3}\); plywood: 8-115 \(\upmu\)g\(\cdot\)m\({}^{-3}\)), acetone (PB: 136-424 \(\upmu\)g\(\cdot\)m\({}^{-3}\); plywood: 8-127 \(\upmu\)g\(\cdot\)m\({}^{-3}\); OSB: 95-517 \(\upmu\)g\(\cdot\)m\({}^{-3}\)), formic acid (plywood: 108-628 \(\upmu\)g\(\cdot\)m\({}^{-3}\)), acetic acid (PB: 6-376 \(\upmu\)g\(\cdot\)m\({}^{-3}\); plywood: 414-910 \(\upmu\)g\(\cdot\)m\({}^{-3}\)). [PERSON] et al. (1999) [74] and [PERSON] et al. (2000) [94] used a different test chamber method (ASTM D 5116-90) to determine the area specific emission rates of PBs and MDFs produced with different wood-types for 4 days, which were mentioned in a previous section. Terpene emissions were mostly reported in WBPs containing pine wood (southern pine or other pine species), namely borneol (MDF-other pine: 7 \(\upmu\)g\(\cdot\)m\({}^{-2}\).h\({}^{-1}\); PB-other pine 12 \(\upmu\)g\(\cdot\)m\({}^{-2}\).h\({}^{-1}\)), camphene (PB-southern pine: 3 \(\upmu\)g\(\cdot\)m\({}^{-2}\).h\({}^{-1}\)), p-cymene (PB-southern pine: 6 \(\upmu\)g\(\cdot\)m\({}^{-2}\).h\({}^{-1}\)) and \(\alpha\)-pinene (PB-other pine: 23 \(\upmu\)g\(\cdot\)m\({}^{-2}\).h\({}^{-1}\)).