Rubio C, Gutiérrez A, Burgos A, Hardisson A
Department of Toxicology, University of La Laguna, La Laguna, Tenerife, Canary Islands, Spain.
Food Addit Contam Part A Chem Anal Control Expo Risk Assess. 2008 Aug;25(8):946-52. doi: 10.1080/02652030801993597.
Estimating the risk associated with dietary intake of heavy metals by consumers is a vital and integral part of regulatory processes. The assessment of exposure to mercury shown in this paper has been performed by means of a study on the whole diet. Total mercury (Hg) levels were determined by cold vapour atomic absorption spectrometry (AAS) in 420 samples of regularly consumed food and drink. The total Hg concentrations measured in the different groups of food ranged from non-detectable to 119 microg kg(-1) w/w. The fish group had the highest concentrations of total Hg. All groups of food with regulated Hg content showed levels that were lower than the legally set values. The food consumption data used in the analysis were taken from the latest nutritional survey made in the Canary Islands, Spain. The estimated total Hg intake of local population (5.7 microg/person day(-1)) did not exceed the provisional tolerable weekly intake (PTWI) limit of 0.3 mg week(-1) of total mercury (43 microg/person day(-1)) fixed by the Joint Food and Agricultural Organization/World Health Organization (FAO/WHO) Expert Committee on Food Additives. Fishery products contributed 96% of the total Hg intake. The mean Hg intake for each island in this archipelago, formed by seven, has also been calculated. Fuerteventura, Lanzarote and El Hierro are the islands with the highest level of Hg intake (7.0, 7,0 and 6.1 microg/person day(-1), respectively). La Palma Island, due to its low fish consumption, had the lowest level of Hg intake (4.5 microg/person day(-1)), followed by La Gomera (5.4 microg/person day(-1)), Tenerife (5.5 microg/person day(-1)) and Gran Canaria (5.6 microg/person day(-1)). A comparison has been made of the results obtained in this study with those found for other national and international communities.
评估消费者通过饮食摄入重金属所带来的风险是监管过程中至关重要且不可或缺的一部分。本文中对汞暴露的评估是通过一项针对整体饮食的研究来进行的。采用冷蒸气原子吸收光谱法（AAS）测定了420份经常食用的食品和饮料样本中的总汞（Hg）含量。不同食品组中测得的总汞浓度范围为未检出至119微克/千克（湿重）。鱼类组的总汞浓度最高。所有汞含量受监管的食品组显示的水平均低于法定设定值。分析中使用的食品消费数据取自西班牙加那利群岛最近进行的营养调查。当地居民估计的总汞摄入量（5.7微克/人·天）未超过食品和农业组织/世界卫生组织（粮农组织/世卫组织）食品添加剂联合专家委员会设定的总汞每周暂定耐受摄入量（PTWI）限值0.3毫克/周（43微克/人·天）。渔业产品占总汞摄入量的96%。还计算了由七个岛屿组成的这个群岛中每个岛屿的平均汞摄入量。富埃特文图拉岛、兰萨罗特岛和耶罗岛是汞摄入量最高的岛屿（分别为7.0、7.0和6.1微克/人·天）。帕尔马岛由于鱼类消费量低，汞摄入量最低（4.5微克/人·天），其次是戈梅拉岛（5.4微克/人·天）、特内里费岛（5.5微克/人·天）和大加那利岛（5.6微克/人·天）。已将本研究获得的结果与其他国家和国际群体的结果进行了比较。
