荞麦中铝的残留量的调查分析

Investigation and analysis of aluminum residues in buckwheat

目的测定荞麦及其制品中铝的残留量,从样品类别和产地两方面分析荞麦中铝的含量分布。方法采用电感耦合等离子体发射光谱法(inductively coupled plasma optical emission spectrometery,ICP-OES)测定105批次荞麦原粮及其加工品中的铝残留量,分析铝的含量分布情况。结果荞麦及其制品中的铝含量分布范围较广,最小值为4.40 mg/kg,最大值可达2318 mg/kg;荞麦中铝含量分布情况为荞麦皮>荞麦原粮>荞麦米;不同产地种植的荞麦中铝含量具有较大差异,产自甘肃和云南的荞麦中铝含量最大值和平均值较高,而陕西的较低。结论所有样品均有铝检出,铝含量高低与样品类别和种植地域有关,且荞麦原粮中的铝元素主要来自于荞麦皮,其含量高于荞麦米。

Objective To determine the residual amount of aluminum in buckwheat and its products,and analyze the distribution of aluminum content in buckwheat from two aspects of sample type and producing area.Methods The residual amount of aluminum in 105 batches of buckwheat raw grain and its processed products was determined by inductively coupled plasma optical emission spectrometery(ICP-OES),and the distribution of aluminum content was analyzed.Results The aluminum content in buckwheat and its products had a wide distribution range,the minimum was 4.40 mg/kg,and the maximum could reach 2318 mg/kg.The distribution of aluminum content in buckwheat was buckwheat husk>buckwheat>buckwheat rice.The aluminum content of buckwheat grown in different producing areas was quite different.The maximum and average content of aluminum in buckwheat from Gansu and Yunnan was higher,while that of Shaanxi was lower.Conclusion Aluminum is detected in all samples,and the aluminum content is related to the sample type and planting area,and the aluminum element in buckwheat raw grains mainly comes from buckwheat hulls,and its content is higher than that of buckwheat rice.