Orecchio Santino, Amorello Diana
Chimiche e Farmaceutiche, Dipartimento di Scienze e Tecnologie Biologiche, Università di Palermo, Viale delle Scienze, 90128 Palermo, Italy.
Foods. 2019 Feb 5;8(2):59. doi: 10.3390/foods8020059.
Potato is a starchy, tuberous crop from the perennial having high nutritional values. This paper is the first analytical approach to quantify Pt and Rh in vegetal food. In this study a total of 38 different potato samples produced in Europe and one in Australia were investigated. Determinations of Pt and Rh in potato samples were carried out by Differential pulse voltammetry (DPV/a) for platinum and by Adsorptive stripping voltammetry (AdSV) for Rh using standard addition procedure. Because no certified reference potatoes containing platinum and rhodium are available, we used addition standard method. The quantification limits for Pt and Rh are 0.007 and 0.0008 μg kg respectively. Considering all the potato samples, concentrations of Pt and Rh vary in the ranges from 0.007 to 109 μg kg (sample no, 6 potatoes grown in Sicily) and from 0.0008 to 0.030 μg kg (sample no. 3 of potatoes grown in Emilia Romagna), respectively. For both metals, in many cases the concentrations fall near the quantification limit. In all the samples, platinum is always more abundant than rhodium and their mean ratio is 14,500, which is much greater than that of the Earth's crust (about 100).
土豆是一种来自多年生植物的富含淀粉的块茎作物，具有很高的营养价值。本文是对植物性食物中铂和铑进行定量分析的首次尝试。在本研究中，共调查了38个产自欧洲的不同土豆样本以及1个产自澳大利亚的土豆样本。采用标准加入法，通过差分脉冲伏安法（DPV/a）测定土豆样本中的铂，通过吸附溶出伏安法（AdSV）测定铑。由于没有含铂和铑的认证参考土豆，我们采用了标准加入法。铂和铑的定量限分别为0.007和0.0008 μg/kg。考虑所有土豆样本，铂的浓度范围为0.007至109 μg/kg（样本编号6，产自西西里岛的土豆），铑的浓度范围为0.0008至0.030 μg/kg（样本编号3，产自艾米利亚 - 罗马涅的土豆）。对于这两种金属，在许多情况下浓度接近定量限。在所有样本中，铂的含量总是高于铑，它们的平均比例为14500，远高于地壳中的比例（约为100）。
