Lead in rice: analysis of baseline lead levels in market and field collected rice grains.

摘要: Abstract In a large scale survey of rice grains from markets (13 countries) and fields (6 countries), total 1578 grain samples were analysed for lead. From the market collected samples, only 0.6% exceeded Chinese EU limit 0.2 μg g − 1 lead in (when excluding known contaminated/mine impacted regions). When evaluating against Food Drug Administration's (FDA) provisional tolerable intake (PTTI) values children pregnant women, it was found that people consuming quantities at risk exceeding PTTI alone. Furthermore, 6 field experiments conducted to evaluate proportion variation concentration due genetics. A 4 had significant differences between genotypes, but when genotypes common across all six sites assessed, 4% explained by genotype, with 9.5% 11% environment genotype interaction respectively. Further work is needed identify sources contamination rice, detailed information obtained on locations environments where sampled, so specific assessments can be performed.