Sensors 2015, 15 15201
sensor from Bluemoon Technology Co. Ltd. (Shenzhen, China), one SP3S-AQ2 FIS sensor from FIS
Inc. (Itami, Japan), and one AQ electrochemical sensor from Dart Sensors Ltd. (Exeter, UK).
Table 1. Pathogens in wound infection and their metabolites.
Pathogens Metabolites
Pseudomonas aeruginosa
Pyruvate, 2-nonanone, 2-undecanone, toluene, 1-undecene,
2-aminoacetophenone, esters, dimethyl disulfide, 2-heptanone, methyl
ketones, dimethyl trisulfide, butanol, 2-butanone, sulphur compounds,
isopentanol, isobutanol, isopentyl acetate
Escherichia coli
Ethanol, decanol, dodecanol, methanethiol 1-propanol,indole, methyl
ketones, lactic acid, succinic acid, formic acid, butanediol, dimethyl
disulfide, octanol, dimethyl trisulfide, acetaldehyde, hydrogen sulfide,
formaldehyde, acetic acid, aminoacetophenone, pentanols
Staphylococcus saureus
Isobutanol, isopentyl acetate, ethanol, ammonia, 1-undecene, methyl
ketones, 2-methylamine, 2,5-dimethylpyrazine, isoamylamine,
trimethylamine, formaldehyde isopentanol, aminoacetophenone, acetic acid
Figure 1. Sensor array.
Figure 2. Schematic diagram of the experimental system.
The sensitive characteristics of the sensors used are listed in Table 2. All sensors are placed in a 240 mL
stainless steel chamber which is coated with Teflon to avoid the attachment of VOCs. The schematic