摘要
研究并建立了乳粉中铝的检测方法。采用干法灰化对乳制品进行前处理，以铬天青s分光光度法在640nm波长下比色定量。铝在0～6mg／kgN，其吸光度与质量浓度之间的回归方程为y=0．167x-0．008，相关系数r=0．999，方法的精密度RSD在2．32％-3．60％之间，加标回收率在95．75％-102.35％之间。此方法简便省时，灵敏稳定，干扰少，准确可靠。
To study and estabhshment of aluminum detection methods in the milk powder, The dry ash method for preprocessing of milk powder in order to Chrome Azurol S Spectrophotometry in the 640 nm wavelength colorimetric quantification. In the 0~6.0 mg/kg Alu- minum, its absorbance and the concentration of the regression equation y=0.167x-0.008, a correlation coetticient of 0.999, RSD of 2-32- 3.60%（n=6）, recoveries were 95.75~/~102.35%. The method is simple and time-saving, sensitive and stable, less interference, accurate and reliable.
出处
《中国乳品工业》
CAS
北大核心
2013年第6期49-50,共2页
China Dairy Industry
关键词
乳制品
铝
分光光度法
检测
milk powder
aluminum
Spectrophotometry
detection
