Queensland Health Forensic and Scientific Services, 39 Kessels Road, Coopers Plains, QLD, 4108, Australia.
Discipline of Medical Education, School of Medicine, The University of Queensland, Herston, QLD, 4006, Australia.
J Trace Elem Med Biol. 2018 Dec;50:671-675. doi: 10.1016/j.jtemb.2018.06.022. Epub 2018 Jun 28.
Exposure to toxic metals such as lead (Pb) and cadmium (Cd) from foods is a concern for young children. The aims of the study were to analyse the levels of Pb and Cd in breakfast cereals, rice products and diets of selected children, and to estimate the daily intakes of Pb and Cd in these children. The samples (n = 82) of ready-to-eat breakfast cereals and rice products (n = 36) were collected and obtained from various markets in Brisbane, Australia. The samples for a duplicate diet study were collected for 3 consecutive days from normal healthy children (n = 15). The analysis was performed using ICP-MS after microwave digestion. The levels of Pb and Cd found in breakfast cereals and rice products ranged from <0.01 to 0.25 mg/kg for Pb and <0.01 to 0.11 mg/kg for Cd. The estimated daily intakes of Pb and Cd in children varied widely and ranged from 0.90 to 11.7 (5.6 ± 3.5 μg/day) for Pb and 0.98 to 9.5 (4.0 ± 2.2 μg/day) for Cd. The study shows low intakes of Pb and Cd in children.
从食物中摄入有毒金属，如铅（Pb）和镉（Cd），是幼儿面临的一个问题。本研究的目的是分析选定儿童的早餐麦片、米制品和饮食中 Pb 和 Cd 的水平，并估计这些儿童的每日 Pb 和 Cd 摄入量。从澳大利亚布里斯班的各种市场收集并获得了即食早餐麦片和米制品（n=36）的样本。从正常健康儿童（n=15）连续 3 天收集了用于重复饮食研究的样本。采用微波消解后 ICP-MS 进行分析。在早餐麦片和米制品中发现的 Pb 和 Cd 水平范围为 0.01 至 0.25mg/kg 之间（对于 Pb）和 0.01 至 0.11mg/kg 之间（对于 Cd）。儿童的 Pb 和 Cd 日估计摄入量差异很大，范围从 0.90 至 11.7（5.6±3.5μg/天）（对于 Pb）和 0.98 至 9.5（4.0±2.2μg/天）（对于 Cd）。该研究表明儿童的 Pb 和 Cd 摄入量较低。
