The test results show that it is technically feasible to separate silver from crude bismuth by vacuum distillation instead of traditional Parke's process of desilverization(zinc desilverization).
试验结果表明,采用真空蒸馏法脱除粗铋中银代替传统的加锌除银法,在技术上是可行的。
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Objective: To provide the basis for the establishment of microbial limit test for colloidal bismuth pectin.