Cadmium Accumulation Risk in Vegetables and Rice in Southern China: Insights from Solid-Solution Partitioning and Plant Uptake Factor

• DOI: 10.1021/acs.jafc.7b01931
• Publication Date: 2017-06-21T15:36:34Z
• Authors: Yang Yang; Meie Wang; Weiping Chen; Yanling Li; Chi Peng
• Keywords: Rice plant

Solid-solution partitioning coefficient (Kd) and plant uptake factor (PUF) largely determine the solubility mobility of soil Cd to food crops. A four-year regional investigation was conducted in contaminated vegetable paddy fields southern China quantify variability Kd PUF. The distributions PUF characterizing transfers from rice are probabilistic nature. Dynamics pH Zn greatly affected variations Kd. In addition pH, organic matter had a major influence on vegetables. Heavy leaching Mn caused higher accumulation grain. Dietary ingestion 85.5% locally produced would have adverse health risks, with consumption contributing 97.2% risk. risk analysis based derived transfer function reveals amorphous oxide content exerts conditions below 5.5. Risk estimation field experiments show that limit concentration grains, management strategies should include improving around 6.0 345 mg kg-1, respectively. Our work illustrates re-establishing balance trace elements soils' labile pool provides an effective risk-based approach for safer crop practices.