Table 1. Relative Amounts of Diethyl Phthalate and Its Fragment Ions Present in Milli-Q Samples Conditioned with Different Polymer Materials, Compared to the Control (nonconditioned) Milli-Q Sample.
| polymer | diethyl phthalate ion eventsb | concentration of released diethyl phthalate (pM) |
|---|---|---|
| Milli-Q watera | 0.023 | 0.038 |
| PIC100 | 47109.500 | 78000.00 |
| E-Shell200 | 381.100 | 630.00 |
| E-Shell300 | 21.200 | 35.00 |
| PDMS | 5.440 | 9.00 |
| PS | 1.180 | 1.95 |
a
Milli-Q water was sham treated in the same way as the Milli-Q water used for plastic conditioning and/or identification of leachates, but without adding a polymer.
b
Diethyl phthalate ion events (m/z 223.10 and 177.06) relative to 100 ion counts of the Milli-Q ion (m/z 304.247).