海产品含砷量较高,但其中主要为毒性较小的有机砷,毒性大的无机砷含量较低。因此,不宜用总砷含量来表示,而应分离并测定出其中的无机砷含量才有意义。海产品中的无机砷,通常可用减压蒸馏法或萃取法进行分离。无机砷在大于8M盐酸中,几乎完全进入有机相,在小于2M盐酸中,几乎完全近入水相。故可先将海产 Marine products contain high levels of arsenic, but mainly the less toxic organic arsenic and the less toxic inorganic arsenic. Therefore, the total arsenic content should not be used to represent, but it is meaningful to separate and determine the inorganic arsenic content. Inorganic arsenic in seafood, usually by vacuum distillation or extraction method for separation. Inorganic arsenic in more than 8M hydrochloric acid, almost completely into the organic phase, in less than 2M hydrochloric acid, almost completely into the water phase. It can be seafood first