[Determination of tin in canned foods with oscillographic polarography].
OBJECTIVE
To develop an oscillographic polarography method for determining the concentration of tin in canned foods.


METHODS
Because the sensitive polarography wave of tin can be obtained in the system of H2SO4-KI-VitC- NH4VO3, the tin content of several canned foods was analyzed.


RESULTS
The detection limit was 0.12 microgram/L. The calibration graph of Sn was linear from 0 to 2.0 micrograms/ml, and the relative standard deviation ranged from 4.22% to 8.33%. The recoveries were 94.7%-112.0%. The samples were analyzed by the proposed method and standard method. The results of the two methods agreed well.


CONCLUSIONS
This method is simple, quick and almost free from interference, and it is available for use in analysis of the canned sample.
Zou
Xiaoli
X
Department of Health Technology, West China School of Public Health, Sichuan University, Chengdu 610041, China.
Li
Min
M
Pu
Yonghong
Y
D005506:Food Contamination / Q000032:analysis*; D005519:Food Preservation; D011048:Polarography / Q000379:methods; D014001:Tin / Q000032:analysis*
D014001:Tin