2010全国生物材料大会论文集之 (991).pdf

Survey on the metal mercially available
soybean in Jinzhou

Cai Yanrong Huang Hongzhi Sun Yinyan Xiao zhenlin
Faculty of Chemistry and Chemical Engineering
Bohai University
Jinzhou, People's Republic of China


Abstract—The content of metal in mercially soybean was
investigated in Jinzhou City, Liaoning Province, such as C. Sample results expression
Mn,Cu,Mg,Zn,Ca,Co,V,Pb,Cr and Cd. The sample was digested The pollution situation of the metal in the bean products
with nitrate and high-chlorine acid. The content of the metal was were analyzed. The maximum levels of the contaminants in
determined with atomic absorption spectrophotometry. The foods were showed in TABLEI.
results showed that the content of Mn,Cu,Fe,Mg,Zn,Ca,Co and V
was rich. While the content of Pb, Cr and Cd of the partial
samples exceeded the national standard maximum limit, in which TABLE I. THE MAXINMUM LEVELS OF THE CONTAMINANTS
IN BEAN FOODS
chromium exceeded more serious.
element Pb Cd Cr Cu Zn
Keywords- soy products; metal; investigation limit(mg/kg) a a 20 b 100 b
, Zn "Limits of eight elements in cereals, legume, tubes and its products(NY861-2004) "
I. INTRODUCTION , Cd and Cr "Maxinmum levels of contaminants in foods(GB2762-2005) "
Soybean is a kind of low-cost nutritious food. It is one of III. RESULTS AND DISCUSSION
the sp