微波消解-铬天青S分光光度法检测油条中铝含量  

Determination of aluminum content in fried dough sticks by microwave digestion-chrome azurol S spectrophotometric method

作　　者：魏秋宁[1] 刘芳芳[1] 陈涛[1] 

机构地区：[1]宁夏回族自治区疾病预防控制中心理化科,银川750004

出　　处：《中华地方病学杂志》2017年第5期386-387,共2页Chinese Journal of Endemiology

摘　　要：目的 研究食品中铝的检测方法，保证食品安全，保障公众健康。方法 采用微波消解-铬天青 S分光光度法检测油条中铝含量，并计算该方法的检出限、线性范围、精密度、准确度和最大吸收波长。结果 该方法的检出限为0.08 μg，精密度为0.60% ~ 5.90%，回收率为96.0% ~ 102.3%，最大吸收波长为620 nm。10份油条样品铝含量分别为709.5、980.8、1 010.3、1 151.5、1 214.0、1 243.7、1 318.1、1 374.0、1 435.0、1 479.4 mg／kg，均超标。结论 本研究建立的食品中铝的检测方法重现性好，稳定性强，操作简便，易于推行。Objective To study a method for determination of aluminum in food, and to ensure food safety and public health. Methods Microwave digestion-chrome azurol S spectrophotometric method was used to detect the aluminum content in fried dough sticks. Detection limit, linear range, precision, accuracy and maximum absorption wavelength were calculated. Results The method detection limit was 0.08 μg, precision was 0.60% - 5.90%, and recovery rate was 96.0% - 102.3%, maximum absorption wavelengnth was 620 mm. Aluminum content in 10 samples of fried dough sticks were all exceeded the standard, which were 709.5, 980.8, 1 010.3, 1 151.5, 1 214.0, 1 243.7, 1 318.1, 1 374.0, 1 435.0 and 1 479.4 mg/kg. Conclusion The method is simple, reliable, reproducible and easy to be used.

关 键 词：铝 微波消解 铬天青S 

分 类 号：R155.5[医药卫生—营养与食品卫生学]