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. 2013 Jul 3;13(7):8523–8533. doi: 10.3390/s130708523

Table 4.

A list of compounds exceeding odor threshold level in this investigation.

Mean Concentration (ppb) Odor Threshold (ppb)a

Patient
Urine
Patient New
Pad
Patient Worn
Pad
Normal New
Pad
Hydrogen sulfide 1.37 ND b 0.87 ND 0.41
Methanethiol 0.96 0.15 1.97 ND 0.07
Acetaldehyde 47.21 60.29 79.59 117.80 1.5
Butyraldehyde 14.82 0.93 13.08 2.94 0.67
Isovaleraldehyde ND ND ND 1.5 0.1
a

Nagata [20]

b

ND: below detection limit.