Huang Li-chun, Tang Jun, Zhang Rong-hua, Gu Fang, Fang Yue-qiang, Zhang He-xiang, Chen Jiang, Li Na, Ding Gang-qiang
Department of Nutrition and Food Hygiene, Center for Disease Control and Prevention of Zhejiang Province, Hangzhou 310051, China.
Zhonghua Yu Fang Yi Xue Za Zhi. 2012 Jan;46(1):42-5.
To assess the safety of dietary lead and cadmium intake in 3 areas of Zhejiang province.
Using the total dietary study method, the study was conducted in 3 regions which represented coastal, city and rural areas in Zhejiang province from 2009 to 2010. The dietary survey was conducted on the residents (512 subjects) and the categories and volume of food consumption were obtained. The analytical food samples were obtained by food consumption survey, food aggregation, food sampling and preparation. The food samples were detected by inductively coupled plasma mass spectrometry (ICP-MS). The safety of dietary lead and cadmium intake was evaluated.
The median dietary lead intake (P₅₀) in Zhejiang province was 37.8 µg/d. The 97.5% dietary lead intake (P₉₇.₅) was 72.3 µg/d. The P₅₀ dietary lead intakes of different age and gender groups ranged from 23.2 to 44.2 µg/d. The P₉₇.₅ dietary lead intakes of different age and gender groups ranged from 34.2 to 88.1 µg/d. The P₅₀ dietary cadmium intake in Zhejiang province was 9.6 µg/d. The P₉₇.₅ dietary cadmium intake was 15.7 µg/d. The P₅₀ dietary cadmium intakes of different age and gender groups ranged from 6.4 to 11.4 µg/d, accounting 15.6% - 42.6% of PTMI (provisional tolerable monthly intake, 25 µg/kg). The P₉₇.₅ dietary cadmium intakes of different age and gender groups ranged from 10.5 to 21.4 µg/d, accounting 27.5% - 77.6% of PTMI. Vegetable (11.3 µg), cereal (11.0 µg) and meat (9.8 µg) were the first three food sources which accounted for 84.9% of dietary lead (P₅₀: 37.8 µg/d). Cereal (3.6 µg), vegetable (2.1 µg) and legume (0.9 µg) were the first three food sources which accounted for 68.8% of dietary cadmium (P₅₀: 9.6 µg/d).
Dietary lead and cadmium intakes of most residents in 3 areas of Zhejiang province as well as the average level are safe.
评估浙江省3个地区膳食铅和镉摄入的安全性。
采用总膳食研究方法，于2009年至2010年在代表浙江省沿海、城市和农村地区的3个区域开展研究。对居民（512名受试者）进行膳食调查，获取食物消费的种类和数量。通过食物消费调查、食物汇总、食物采样和制备获取分析用食物样本。采用电感耦合等离子体质谱法（ICP-MS）对食物样本进行检测。评估膳食铅和镉摄入的安全性。
浙江省膳食铅摄入量中位数（P₅₀）为37.8μg/d。膳食铅摄入量第97.5百分位数（P₉₇.₅）为72.3μg/d。不同年龄和性别组的膳食铅摄入量P₅₀范围为23.2至44.2μg/d。不同年龄和性别组的膳食铅摄入量P₉₇.₅范围为34.2至88.1μg/d。浙江省膳食镉摄入量中位数（P₅₀）为9.6μg/d。膳食镉摄入量第97.5百分位数为15.7μg/d。不同年龄和性别组的膳食镉摄入量P₅₀范围为6.4至11.4μg/d，占暂定每月耐受摄入量（PTMI，25μg/kg）的15.6% - 42.6%。不同年龄和性别组的膳食镉摄入量P₉₇.₅范围为10.5至21.4μg/d，占PTMI的27.5% - 77.6%。蔬菜（11.3μg）、谷物（11.0μg）和肉类（9.8μg）是膳食铅（P₅₀：37.8μg/d）的前三大食物来源，占比84.9%。谷物（3.6μg）、蔬菜（2.1μg）和豆类（0.9μg）是膳食镉（P₅₀：9.6μg/d）的前三大食物来源，占比68.8%。
浙江省3个地区大多数居民的膳食铅和镉摄入量以及平均水平是安全的。
