Frazzoli Chiara, Cammarone Roberta, Caroli Sergio
Department of Food Safety and Veterinary Public Health, Istituto Superiore di Sanità, 00161 Rome, Italy.
Food Addit Contam. 2007 May;24(5):546-52. doi: 10.1080/02652030601185691.
Over the last two decades, there has been increased concern regarding the impact of some noble metals, such as Pd and Pt, on human health. These elements pollute the environment due to their widespread use as catalytic converters and in medical applications. The risk they pose to human health and the environment is still controversial; however, literature data point to diet as an important source of uptake by the human body. Within this context, the total Pd and Pt content of several Italian food commodities has been investigated. A total of 90 samples, including flour products, vegetables and foodstuffs of animal origin (meat, milk and eggs), were collected and freeze-dried. Samples were analyzed by sector field inductively coupled plasma mass spectrometry (SF-ICP-MS) after chopping or crushing followed by freeze-drying and microwave (MW)-assisted acid digestion in a Class-100 clean-room. A mathematical approach was adopted to correct the mass signals for still unresolved interference (mDeltam = 300, 10 000). The lowest and highest concentrations of Pt, i.e. 17 and 93 ng kg(-1) (dry weight, dw), were found in vegetables and flour products, respectively. The lowest Pd level (2830 ng kg(-1) dw) was found in eggs and the highest (47 800 ng kg(-1) dw) in vegetables.
在过去二十年中，人们越来越关注某些贵金属（如钯和铂）对人类健康的影响。由于它们作为催化转化器和在医疗应用中的广泛使用，这些元素污染了环境。它们对人类健康和环境构成的风险仍存在争议；然而，文献数据表明饮食是人体摄入这些元素的重要来源。在此背景下，对几种意大利食品中的钯和铂总含量进行了调查。共收集了90个样品，包括面粉制品、蔬菜和动物源性食品（肉、奶和蛋），并进行冷冻干燥。样品在100级洁净室内切碎或粉碎，然后冷冻干燥并经微波辅助酸消解后，采用扇形场电感耦合等离子体质谱法（SF-ICP-MS）进行分析。采用一种数学方法对仍未解决的干扰（mDeltam = 300, 10 000）的质量信号进行校正。铂的最低和最高浓度分别在蔬菜和面粉制品中被发现，即17和93 ng kg(-1)（干重，dw）。钯的最低含量（2830 ng kg(-1) dw）在鸡蛋中被发现，最高含量（47 800 ng kg(-1) dw）在蔬菜中。
