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铅锌矿及其选矿产品,包括原矿、铅精矿、锌精矿、铅、锌中矿及尾矿各种不同类型矿样,其含量变化范围广,基体成份变化大.用粉末法,很难消除基体效应和粒度影响;用溶液法,则因溶液本底强度高及大倍数稀释,又难以测定低含量的铅锌.本文用焦硫酸钾熔融试样,铋作铅和锌的共用内标,较好地克服了基体效应、矿物效应和粒度效应.可在同一测试条件下对不同含量范围、不同类型的铅锌矿样进行测定.
Lead and zinc concentrates and their beneficiation products, including ore, lead concentrate, zinc concentrate, lead, zinc mine and tailings of different types of ore samples, the content of a wide range of changes in the composition of the matrix changes with the powder method is very It is difficult to eliminate the matrix effect and particle size effect.Using the solution method, it is difficult to determine the low content of lead and zinc due to the high background strength and large dilution of the solution.This paper uses potassium pyrosulfate to melt the sample, bismuth for the common use of lead and zinc Which can better overcome the matrix effect, mineral effect and grain size effect.It can be used to measure lead and zinc samples with different content range and different types under the same test conditions.