Factors driving antimony accumulation in soil-pakchoi and wheat agroecosystems: insights and predictive models

This study investigated the accumulation of Sb in the edible parts of pakchoi and wheat grain by adding exogenous Sb to 21 soils with varying properties. The results revealed a positive correlation between bioavailable Sb (Sbava, extracted by 0.1 M K2HPO4) in soil and Sb in the edible parts of pakchoi (R2 = 0.77, p<0.05) and wheat grain (R2 = 0.54, p<0.05). Both machine learning and traditional multiple regression analysis indicated Sbava was the most critical feature and the main soil properties that contributed to Sb uptake by pakchoi and wheat were CaCO3 and clay, respectively. The advisory food limits for Sb in pakchoi and wheat were estimated based on health risk assessment, and used to derive soil thresholds for safe pakchoi and wheat production based on Sbtot and Sbava, respectively. These findings hold potential for predicting Sb uptake by crops with different soil properties and informing safe production management strategies.PMID:38648966 | DOI:10.1016/j.envpol.2024.124016

Source: Environmental Pollution - April 22, 2024 Category: Environmental Health Authors: Tongliang Wu Naichi Zhang Cun Liu Changfeng Ding Peng Zhang Sainan Hu Yihang Huang Zixuan Ge Peixin Cui Yujun Wang Source Type: research