石墨炉原子吸收光谱法测定大学生镉摄入量及安全性评价
[Determination and safety evaluation of cadmium intakes in college students by graphite furnace atomic absorption spectrometry].
作者信息
Gu Jiali, Zhao Gang, Fei Mingyue, Liu Jing, Li Le
机构信息
College of Chemistry, Chemical Engineering and Food Safety, Bohai University, Jinzhou 121013, China.
出版信息
Wei Sheng Yan Jiu. 2012 Sep;41(5):739-42.
OBJECTIVE
To investigate the cadmium pollution and safety in dietary of students in Jinzhou, and to provide scientific basis for rational diet.
METHODS
The twelve kinds of foods were collected randomly. The contents of cadmium were determined by graphite furnace atomic absorption spectrometry (GFAAS). The intake level of cadmium in diet was calculated and evaluated by comparing to provisional tolerable monthly intake (PTMI) recommended by WHO/FAO and assessed safety of cadmium intakes in diet of students.
RESULTS
The contents of cadmium in aquatic products and meats were 0.131 and 0.109 mg/kg respectively. The main sauces of cadmium were aquatic products, meats, vegetables and cereals, they were 34.08%, 24.02%, 17.32% and 17.32% of daily cadmium intakes respectively. The average intake and median intake were lower than PTMI, but percentile 97.5 was 12.4% of PTMI.
CONCLUSION
The intakes of cadmium in diet of students were relative safety, but eating to much was also dangerous, so necessary to reduce intake.
目的
调查锦州市学生膳食中镉的污染及安全性，为合理膳食提供科学依据。
方法
随机采集12种食物。采用石墨炉原子吸收光谱法（GFAAS）测定镉含量。通过与世界卫生组织/联合国粮农组织推荐的暂定每月耐受摄入量（PTMI）进行比较，计算并评估膳食中镉的摄入水平，评估学生膳食中镉摄入的安全性。
结果
水产品和肉类中镉含量分别为0.131和0.109毫克/千克。镉的主要来源是水产品、肉类、蔬菜和谷物，它们分别占每日镉摄入量的34.08%、24.02%、17.32%和17.32%。平均摄入量和中位数摄入量低于PTMI，但第97.5百分位数为PTMI的12.4%。
结论
学生膳食中镉的摄入量相对安全，但过量食用也有风险，因此有必要减少摄入量。
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