Toxic metal levels in cocoa powder and chocolate by ICP-MS method after microwave-assisted digestion

被引：77
|
作者：
Lo Dico, Gianluigi Maria [1 ]
Galvano, Fabio [2 ]
Dugo, Giacomo [3 ,4 ]
D'ascenzi, Carlo [5 ]
Macaluso, Andrea [1 ]
Vella, Antonio [1 ]
Giangrosso, Giuseppe [1 ]
Cammilleri, Gaetano [1 ]
Ferrantelli, Vincenzo [1 ]
机构：
[1] Ist Zooprofilatt Sperimentale Sicilia A Mirri, Via Gino Marinuzzi 3, I-90129 Palermo, Italy
[2] Univ Catania, Dept Biol Chem, Citta Univ Via Santa Sofia 64, Catania, Italy
[3] Univ Messina, Dept Organ & Biol Chem, Vill S Agata, I-98166 Messina, Italy
[4] Univ Messina, Dept Anim Biol & Marine Ecol, Vill S Agata, I-98166 Messina, Italy
[5] Univ Pisa, Dept Vet Sci, Viale Piagge, Pisa, Italy
来源：
FOOD CHEMISTRY | 2018年 / 245卷
关键词：
ICP-MS; Cocoa; Chocolate; Toxic metals; TRACE-ELEMENTS; CADMIUM; PRODUCTS; MILK; LEAD;
D O I：
10.1016/j.foodchem.2017.11.052
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
The Commission Regulation (EC) Regulation N. 488/2014, established the concentration limits for cadmium in specific products based on cocoa and chocolate products as from January 2019. Based on this information there is a need to determine ultratrace levels of elements that might be presents in cocoa and chocolate products. In this work, the concentrations of Arsenic, Antimony, Cadmium, Chromium, Lead, Selenium and Vanadium were evaluated in cocoa powder and chocolate by the validation of an ICP-MS method. Good selectivity/specificity, recovery, repeatability and within-laboratory reproducibility, LOD, LOQ, range of linearity, standard measurement uncertainty parameters for method validation were achieved, in accordance with Commission Regulation. The cocoa powder revealed the maximum metal concentrations of 0.303 +/- 0.035 mg/kg for cadmium, 1.228 +/- 0.146 mg/kg for lead and 0.094 +/- 0.013 mg/kg for arsenic. A significant difference was found between cocoa powder and chocolate samples (p < .05).
引用
收藏
页码：1163 / 1168
页数：6
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