2010年南宁市面制食品铝污染状况调查及人群暴露量评估

目的调查南宁市面制食品中铝污染状况,并评估居民的铝暴露情况,为今后的监管提供依据。方法 2010年按分层抽样方法采集南宁市场早餐供应点及大型超市出售的六类面制食品共101份,按照国家标准方法检测面制食品中铝的含量。参考2002年广西居民膳食营养调查中面及其制品的摄入量,评估居民面制食品中铝的暴露量。结果南宁市面制食品铝含量的均值为336.7 mg/kg,对面制食品的铝平均暴露量为每人每周1.41 mg;南宁市面制食品铝含量的P90值为977.1 mg/kg,对面制食品铝暴露量的P90值为每人每周4.10 mg。南宁市居民的铝平均暴露量相当于FAO/WHO推荐的暂定每周容许摄入量(PTWI)的70.5%,而以面制食品铝P90含量计算的南宁市居民的铝暴露量相当于FAO/WHO推荐的PTWI的205%。结论目前南宁市居民面制食品的铝暴露量存在安全隐患,这主要与FAO/WHO降低铝的PTWI有关,但关键是需要切实加强面制食品的监督管理,降低面制食品中铝含量。

The contamination of aluminum in flour products and the assessment of aluminum exposure in Nanning

Objective To investigate the contamination of aluminum in flour products in Nanning city,to evaluate the status of aluminum exposure of residents,and to provide basis for hygienic supervision.Methods According to a stratified sampling plan,a total of 101 samples of flour food products were collected from supermarkets and fairs in Nanning in 2010.Aluminum content was analyzed by national standard methods.The safety of foods exposed by aluminum was evaluated based on the intake level of flour products adapted from the 2002 dietary nutrition survey conducted in Guangxi.Results The average aluminum content in flour food products was 336.7 mg/kg.The average exposure of aluminum from flour foods was 1.41 mg per reference man per week in Nanning.The P90 of aluminum content in flour foods was 977.1 mg/kg,and the P90 of aluminum exposure from flour foods was 4.10 mg per reference man per week in Nanning.Conclusion The content of aluminum in some flour products such as fried dough sticks,steamed buns had exceeded the standard limits seriously in Nanning.The average exposure of aluminum from flour foods per reference man per week was equivalent to 70.5% of PTWI recommended by FAO/WHO.The P90 of aluminum exposure from flour foods per reference man per week was equivalent to 205% of PTWI recommended by FAO/WHO.Testing and inspecting aluminum contamination in flour foods should be strengthened.