摘要
硅酸盐样品的分解方法历来是分析工作者十分关注并且不断探索的课题。硅酸盐分析发展的历史告诉我们:伴随着新的分解方法的出现,必然会诞生新的分析流程,推动硅酸盐分析向着更加准确、快速和经济的方向前进。本文拟对硅酸盐样品常用的分解方法作一综述。
A review is presented with 89 references.Description of many efficient fluxes is given,including sodium carbonate,alkali hydroxides,sodium peroxide.boric oxide and alkali borates.among them a variety of lithium borate fluxes are attractive in modern silicate analysis.In a PTFE-lined or Pt-lined bomb the HF attack is much more effective than evaporation in an open vessel,with the advantage that Si can be determined.Some techniques deserve mention.The Rafter convention of sintering with Na_(2)O_(2) at 480℃has evolved into fusion with Na_(2)O_(2)+NaOH(5:2)at 520±10℃in platinum since more than twenty years in the reviewer’s laboratory.The new technique effectively attacks all silicate rocks and minerals with a less than 1 mg loss of platinum per fusion.HF decomposition in a sealed polycarbonate bottle,followed by the addition of boric acid to neutralize excess fluorine,is a good practice,the resulted solution can be used to determine all major and minor constituents.
作者
凌进中
LING Jinzhong(Xi'an Institute of Geology and Mineral Resources)
出处
《岩矿测试》
CAS
1988年第4期317-322,I0010,共7页
Rock and Mineral Analysis
