On the basis of a Total Diet Study, the Br, As, Cd and Pb contents in relevant food groups consumed in Portugal were determined. The studied groups were meat products, fatty fish, lean fish, shellfish, cephalopods, fresh and dried fruit, crucifers and other vegetables. It was observed that the concentrations of As, Br, Cd and Pb in fruit, vegetables and meat products were much lower than in seafood. Fresh fruit exhibited the lowest elemental contents. The concentrations of As, Br, Cd and Pb did not show any dependence on season. With respect to proximate composition, elemental content dependence on protein or ash was weak. PCA showed relevant associations: between Br and ash contents in fatty fish; between Cd, Pb and protein contents in crucifers; and between As, fat and protein contents in the other vegetables group. Therefore, the effect of the proximate composition on the studied elemental contents warrants investigation.

中文翻译：

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季节和附近成分对葡萄牙消费的各种关键食品中溴，砷，镉和铅含量的影响

在总饮食研究的基础上，确定了在葡萄牙消费的相关食品中的溴，砷，镉和铅的含量。研究对象是肉类产品，肥鱼，瘦鱼，贝类，头足类，新鲜和干果，十字花科植物和其他蔬菜。据观察，水果，蔬菜和肉类产品中的砷，溴，镉和铅的含量远低于海鲜。新鲜水果的元素含量最低。As，Br，Cd和Pb的浓度与季节无关。关于最接近的组成，元素含量对蛋白质或灰分的依赖性较弱。五氯苯甲醚显示出相关的联系：高脂鱼类中溴和灰分之间的关​​系；十字花科植物中镉，铅与蛋白质含量之间的关系 在其他蔬菜组中，As，脂肪和蛋白质含量之间。所以，