Table 2 Medium-term stability of PEMM-1 analyses as indicated by the relative s.d. (RSD) of the average peak area from the least (C8) and most (OPH) variable sensors for a subset mixture of 9 VOCs analyzed 4 times per day for 7 days*
Cmpd | μCR | RSD (%) of peak area † | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Intra-day (n=4) | Inter-day (n=7) | |||||||||
1 | 2 | 3 | 4 | 5 | 6 | 7 | PEMM-1 | GC-FID | ||
C7 | C8 | 1.6 | 2.1 | 2.4 | 2.4 | 2.4 | 1.1 | 1.6 | 3.9 | 1.9 |
OPH | 4.1 | 3.1 | 4.7 | 7.3 | 6.6 | 3.4 | 3.0 | 4.1 | ||
BAC | C8 | 1.3 | 2.4 | 2.1 | 1.5 | 3.7 | 2.9 | 2.0 | 2.9 | 1.3 |
OPH | 0.8 | 2.0 | 1.2 | 1.4 | 1.4 | 2.6 | 1.5 | 4.1 | ||
XYL | C8 | 2.4 | 3.1 | 1.8 | 3.6 | 4.4 | 3.0 | 1.0 | 2.7 | 2.2 |
OPH | 2.2 | 3.5 | 3.6 | 5.0 | 2.1 | 4.0 | 2.8 | 5.7 | ||
EBK | C8 | 2.4 | 4.1 | 3.5 | 3.5 | 3.5 | 4.2 | 4.7 | 4.9 | 4.6 |
OPH | 2.3 | 3.2 | 1.9 | 2.4 | 1.6 | 3.0 | 3.5 | 5.0 | ||
PPB | C8 | 2.7 | 3.2 | 3.4 | 1.9 | 4.8 | 3.2 | 2.0 | 5.2 | 4.3 |
OPH | 3.0 | 5.9 | 4.1 | 5.1 | 5.7 | 7.9 | 4.0 | 6.9 | ||
TMB | C8 | 2.7 | 3.0 | 2.8 | 3.3 | 2.4 | 5.9 | 2.3 | 6.8 | 5.3 |
OPH | 6.3 | 6.6 | 9.8 | 5.4 | 7.3 | 7.3 | 5.1 | 9.9 | ||
C10 | C8 | 2.3 | 1.3 | 1.6 | 3.7 | 4.2 | 4.8 | 4.4 | 5.3 | 4.4 |
OPH | 6.2 | 2.3 | 1.7 | 5.0 | 2.0 | 7.5 | 6.6 | 5.7 | ||
C11 | C8 | 4.5 | 4.2 | 5.8 | 3.6 | 4.5 | 5.8 | 3.8 | 9.0 | 6.0 |
OPH | 8.5 | 9.8 | 8.5 | 8.5 | 5.1 | 6.2 | 6.7 | 11 | ||
C12 | C8 | 4.6 | 7.4 | 8.0 | 4.2 | 5.8 | 7.0 | 5.4 | 9.6 | 7.5 |
OPH | 9.1 | 7.8 | 9.9 | 9.7 | 6.3 | 7.6 | 9.3 | 13 | ||
