砷酸盐包括正砷酸H3AsO4、偏砷酸HAsO3和焦砷酸H4As2O7的盐类。有正盐、酸式盐和碱式盐。碱金属的砷酸盐溶于水，例如砷酸钠Na3AsO4、砷酸二氢钾KH2AsO4等。其他金属的砷酸盐几乎不溶于水，例如砷酸钙Ca3(AsO4)2、砷酸铅Pb3(AsO4)2、碱式砷酸铅Pb5(OH)(AsO4)3等。砷酸盐有毒，可以用杀虫剂等。
两种砷酸盐均可引起染色体畸变。
Chromosome aberrations were induced with both arsenic compounds.
钡被作为极其难以解决的砷酸盐，但是这被显示是错误的。
Barium arsenate was proposed as being an extremely insoluble arsenate, but this was shown to be incorrect.
另外我们知道，在某些控制剂量下，亚砷酸盐有治疗价值。
In addition, we know that under certain controlled doses, arsenite has therapeutic value.
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