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Randomized Controlled Trial
. 2018 Aug 2;13(8):e0201454.
doi: 10.1371/journal.pone.0201454. eCollection 2018.

Dietary cadmium exposure assessment in rural areas of Southwest China

Jiao Huo  1 , Zhenzhen Huang  1 , Renjia Li  1 , Yang Song  2 , Zhen Lan  2 , Sijia Ma  1 , Yongning Wu  3 , Jinyao Chen  1 , Lishi Zhang  1
Affiliations
Randomized Controlled Trial

Dietary cadmium exposure assessment in rural areas of Southwest China

Jiao Huo et al. PLoS One. .

Abstract

Dietary exposure of cadmium (Cd) has not been studied in Southwest China. The objective of the study was to determine the pollution characteristics and contamination levels in various agriculture products in Southwest China and to conduct a comparison of dietary exposure assessment of Cd in polluted and non-polluted areas. Results showed that the mean Cd contents in rice were 0.53 and 0.52 mg/kg in the high-polluted and low-polluted areas, respectively, with the average value was 0.03 mg/kg in the control area. The mean dietary Cd exposure from rice and vegetables of the selected non-occupational residents in Southwest China was 113.10 μg/kg bodyweight (bw)/month, 88.80 μg/kg bw/month, and 16.50 μg/kg bw/month in the high-polluted, low-polluted, and control areas, respectively, which correspond to 4.5 times, 3.6 times, and 0.66 times of the provisional tolerable monthly intake (25 μg/kg bw/month) established by the Joint FAO/WHO Expert Committee on Food Additives. The findings indicated that the risk for Cd exposure of residents was high due to home-grown food (most especially rice) being near polluted areas and is of great concern.

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Conflict of interest statement

The authors have declared that no competing interests exist.

Figures

Fig 1
Fig 1. Monthly dietary Cd exposures of 40–75-year-old residents in the polluted and control areas in Southwest China.
Fig 2
Fig 2. Contributions of different rice and vegetable groups to Cd exposure.
(A) control area, (B) low-polluted area, (C) high-polluted area.
See this image and copyright information in PMC

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