LI Wenjie, LI Lihua, LI Mei, LU Xuejun

(Integrated Technology and Service Centerof Tangshan Customs, Tangshan 063000, Hebei, China)

Abstract: This paper summarized the lead and cadmium dissolving-out amount measurement principle of domestic ceramics, analyzed the migration methods and influencing factors of heavy metal elements with ceramic glaze in acetic acid extract solution, and studied the difference between lead and cadmium dissolving-outamount measurement results of the different liquid layer without stirringand the mixed fluid in the same samples of 8 groups of bone china cup samples which consist of 48 samples with the same surface decoration and different specifications and other 48 samples with different surface decoration and same specifications. On the basis of the mechanical characteristicsofheavy metal elements inextract solutions and the fluid mechanics principle, this paper analyzed the reasons of the above differences. It is derived that the need to take appropriate blending measures for bone china cup samples of different specifications and with surface decoration around the mouth or onthe inside bottomunder the condition of confidence level of 95%.
Key words: domesticceramics; the dis-solubility of lead and cadmium; retrieving means; flame atomic absorption spectrometr