Selenium contents were measured by 2,3 diaminonaphthalene fluorospectrometry and glutathione peroxidase (GSH Px)activity by GSH reductase coupled method.

• 用2，3－二氨基萘荧光法和谷胱甘肽还原酶偶联法测定硒含量和谷胱甘肽过氧化物酶（GSH－Px）活性。