Table 1. Concentrations of phthalates in acidic liquids under different storage conditions.
Bottle type | t/storage)/°C | Acidic liquid | γ/(µg/L) | ||
---|---|---|---|---|---|
DEP | DBP | DEHP | |||
HDPE | Control | verjuice | 0.03±0.01 | <LOD | 0.04±0.02 |
lemon juice | <LOD | <LOD | <LOD | ||
vinegar | 0.22±0.04 | 0.11±0.02 | 0.11±0.03 | ||
4 | verjuice | 0.12±0.06 | 0.11±0.06 | 0.21±0.12 | |
lemon juice | 0.05±0.04 | 0.07±0.04 | 0.07±0.03 | ||
vinegar | 0.26±0.04 | 0.17±0.04 | 0.34±0.09 | ||
25 | verjuice | 0.25±0.15 | 0.14±0.09 | 0.30±0.18 | |
lemon juice | 0.09±0.05 | 0.10±0.06 | 0.12±0.07 | ||
vinegar | 0.33±0.08 | 0.21±0.07 | 0.40±0.13 | ||
50 | verjuice | 0.19±0.11 | 0.11±0.07 | 0.32±0.21 | |
lemon juice | 0.05±0.02 | 0.07±0.05 | 0.16±0.09 | ||
vinegar | 0.27±0.04 | 0.17±0.06 | 0.43±0.16 | ||
PET | Control | verjuice | 0.03±0.01 | <LOD | 0.04±0.02 |
lemon juice | <LOD | <LOD | <LOD | ||
vinegar | 0.22±0.04 | 0.11±0.02 | 0.11±0.03 | ||
4 | verjuice | 0.15±0.08 | 0.11±0.06 | 0.11±0.06 | |
lemon juice | 0.07±0.04 | 0.08±0.05 | 0.07±0.04 | ||
vinegar | 0.30±0.05 | 0.16±0.03 | 0.28±0.05 | ||
25 | verjuice | 0.31±0.18 | 0.14±0.08 | 0.16±0.09 | |
lemon juice | 0.13±0.07 | 0.11±0.07 | 0.11±0.06 | ||
vinegar | 0.40±0.13 | 0.21±0.07 | 0.35±0.09 | ||
50 | verjuice | 0.22±0.13 | 0.11±0.07 | 0.20±0.12 | |
lemon juice | 0.07±0.04 | 0.08±0.06 | 0.11±0.06 | ||
vinegar | 0.31±0.07 | 0.19±0.06 | 0.35±0.10 |
The results are expressed as mean values±standard deviations. DEP=diethyl phthalate, DBP=dibutyl phthalate, DEHP=bis(2-ethylhexyl) phthalate, LOD=limit of detection, HDPE=high-density polyethylene, PET=polyethylene terephthalate