| Status |
Accepted |
| journal_subject |
Part C |
| Article Type |
Regular Paper (More than 4 pages) |
| Article Filed |
|
| Article Title |
Migration of Lead, Cobalt, Nickel and Zinc from Ceramic Glazes by Acid Food Simulants |
| Keywords |
Lead, Cobalt, Nickel, Zinc, Ceramic Glazes, Migration. |
| Abstract |
Ceramic food packaging containers with improperly fabricated glazes can release some toxic heavy
metals such as lead, cobalt, nickel and zinc into foods, which may contaminate foods and even endanger
consumer’s health. In order to investigate the safety of ceramic food packaging containers with contact with food
and to study the leaching behavior of lead, cobalt, nickel and zinc, long-term contact experiments were carried out
on glazed tile specimens with 4% acetic acid solution under different conditions. Results indicate that nickel is the
most leachable element among these four heavy metals, and lead is the least leachable one, relatively. The amount
of these heavy metals released into the leachate increase with temperature. Similarly, the rates of the release of
these heavy metals increase with temperature, too. Parabolic Fit analyses of all the leaching data on the long term
yield good correlations (the square of correlation coefficient, R 2 was all above 0.93) which indicate that migration
of lead, cobalt, nickel and zinc from the certain glaze into 4% acetic acid were diffusion-controlled process and
have a linear dependence on the square root of time for the amount of heavy metals removed from glaze into acid
food simulants. |
| Authors |
| First Name
| Middle Name
| Last Name
| E-Mail
| Corresponding
|
| Lixin |
|
Lu |
lulx@jiangnan.edu.cn |
Yes |
| Zhanhua |
|
Dong |
|
No |
| Zhigang |
|
Liu |
|
No |
| Yali |
|
Tang |
|
No |
| Jun |
|
Wang |
|
No |
|
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