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本法是LiBO_2或Li_2CO_3—H_3BO_3熔融法的改进.用标样基体匹配法代替人工配制标样匹配法来消除基体干扰;熔剂:分析样也由10:1降到4:1.用水系沉积物标样及土壤标样进行实测结果,大部分元素的回收率均在95～105%之间,只有个别元素回收率超过了范围值.若用瓷坩埚代替铂坩埚熔样,必须将光谱纯石墨粉充满瓷坩埚,否则会使硅的分析值偏高.
This method is an improvement of the melting method of LiBO_2 or Li_2CO_3-H_3BO_3. The standard matrix matching method is used instead of the manual preparation of the standard matching method to eliminate the matrix interference. The flux samples are also reduced from 10: 1 to 4: 1. Standard samples and soil samples measured results, the recovery rate of most of the elements are between 95 ~ 105%, only the recovery rate of individual elements exceeds the range value.If the porcelain crucible instead of platinum crucible melting sample must be pure graphite Powder filled porcelain crucible, otherwise it will make the analysis of silicon value is high.