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用离子交换比色法,在树脂相于700nm和475nm处直接测定铋的吸光度,除了大量的银(Ⅰ)和铅(Ⅱ)外,其它离子对ppm～ppb数量级的铋的测定没有干扰。该方法可用于测定天然水中的微量铋。
By ion exchange colorimetry, the absorbance of bismuth was directly determined at 700 nm and 475 nm for the resin phase. Except for a large amount of silver (I) and lead (II), other ions did not interfere with the determination of bismuth in the ppm ~ ppb order. This method can be used to determine trace bismuth in natural water.