Evaluation of material quality and study of released elements from aluminium electric pan

Abstract

From observations of social media and a question from Office of Consumer Protection Board (OCPB) about contamination of toxic substances from aluminium electric pan because of a change of surface's appearance after using, Department of Science Service collected 13 aluminium electric pan samples (9 samples of type 1 and 4 samples of type 2) from local markets in Bangkok in order to evaluate material quality and study the released elements from electric pan by using 4 stimulants (Dl water, tap water, 1% NaCl and 0.5% citric acid) at boiling condition for 2 hours. Results showed that material of all samples was aluminium alloy and 55 % of type 1 samples did not comply with BS EN 602 standard but all samples of type 2 complied with the standard. The study of released elements from the aluminium electronic pan samples presented that aluminium, iron, manganese, magnesium and zinc released from all samples by using 3 stimulants (tap water, 1% NaCl and 0.5% citric acid). In addition, concentration of released aluminium from all samples of type 1 was higher than specific released limit (SRL), while sample type 2 was less than the limit. In both types, concentrations of iron, magnesium, manganese and zinc were lower than the limit