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. Author manuscript; available in PMC: 2024 May 1.
Published in final edited form as: Inhal Toxicol. 2023 Jan 24;35(5-6):129–138. doi: 10.1080/08958378.2023.2169416

Table 2:

Respiratory parameters for mice (n=8/group) were exposed to flaming and smoldering burn pit materials plywood (PW), cardboard (CB), plastic (PL) and a mixture (MX) for 1 hour on 2 consecutive days, presented as change from baseline average ± SEM. *P < 0.05 compared to all other fuel types, #P < 0.05 compared to matched fuel smoldering conditions. CB, PL, MXP < 0.05 when compared to that fuel type. Bolded text: P < 0.05 when compared to matched whole smoke condition.

Smoldering Ti (Δ msec) Te (Δ msec) RT (Δ msec) PIF (Δ mL/s) PEF (Δ mL/s) TV (Δ mL)
PW whole 43.3 ± 7.6 291.1 ± 26.1 271.6 ± 23.2 −0.71 ± 0.06CB −0.59 ± 0.07* −0.02±0.01CB,PL
filtered 12.7 ± 2.6 116.4 ± 9 104.7 ± 9.1 −0.04 ± 0.08 −0.07 ± 0.09 0.02 ± 0.01
CB whole 48.9 ± 5.8 240.7 ± 19.9PL 211.4 ± 19.6 −0.37 ± 0.05 −0.26 ± 0.03 0.02 ± 0.01
filtered 31.0 ± 2.9 205.2 ± 7.5 180.6 ± 4.7 −0.29 ± 0.04 −0.24 ± 0.03 0.02 ± 0.01
PL whole 58.6 ± 6.5 358.2 ± 26.2 248.1 ± 27.8 −0.46 ± 0.08 −0.37 ± 0.07 0.04 ± 0.01MX
filtered 38.2 ± 5.9 253.2 ± 10.3 225.8 ± 9.0 −0.07 ± 0.07 −0.07 ± 0.1 0.04 ± 0.01
MX whole 50.4 ± 7.5 290.9 ± 16.4 278.1 ± 16.6 −0.54 ± 0.1 −0.27 ± 0.06 0.01 ± 0.01
filtered 27.6 ± 3.4 157.9 ± 14.3 146.0 ± 13.4 −0.14 ± 0.1 −0.04 ± 0.07 0.03 ± 0.01
Flaming Ti (Δ msec) Te (Δ msec) RT (Δ msec) PIF (Δ mL/s) PEF (Δ mL/s) TV (Δ mL)
PW whole 11. 5 ±2.1#MX 99.2±10.6#PL,MX 97.9 ± 10#PL,MX −0.78 ± 0.09* −0.6 ± 0.1* −0.05 ± 0.01*
filtered 7.3 ± 1.3 40.3 ± 2.7# 32.6 ± 2# −0.14 ± 0.05 −0.18 ± 0.05 0.01 ± 0.01
CB whole 14.4 ± 2.2#MX 108.3±5.8#PL,MX 101.5±4.9#PL,MX −0.11 ± 0.05# −0.16 ± 0.06PL 0.02 ± 0.01
filtered 5.4 ± 0.8# 58.8 ± 6.1# 53.1 ± 5.4# −0.19 ± 0.04 −0.27 ± 0.04 −0.01 ± 0.01#
PL whole 8.5 ± 1# 24.1 ± 2.1# 26.2 ± 2.1# 0.13 ± 0.06# 0.21 ± 0.07# 0.03 ± 0.01
filtered 1.8 ± 1.7# 17.5 ± 3.4# 9.5 ± 3.3# 0.12 ± 0.04# 0.05 ± 0.07 0.02 ± 0.01#
MX whole 1.7 ± 2.5# 9 ± 4.8# 6.4 ± 4.1# 0.12 ± 0.09# 0.11 ± 0.07# 0.02 ± 0.01
filtered 0.7 ± 2.3# 16.5 ± 5.4# 14.2 ± 4# −0.05 ± 0.04 −0.11 ± 0.04 0.01 ± 0.01#