The elements similar to arsenic in geochemical habits should be paid attention to, especially their joint actions and biochemical effects of valences of arsenic in human bodies.

• 研究中应重视与砷地球化学习性相似的其他重金属元素与砷一起对人体的联合作用,以及兼顾不同价态砷各自的生物化学效应。