为提高测定金属钠中微量碳分析方法的准确度和降低分析下限,对原有的蒸馏装置和定量方法等作了重大改进,现采用真空蒸馏一残渣通氧燃烧-气相色谱法测定核级纯回路钠和高纯钠中微量碳。用处理过的石英埚,在氩气氛下从回路或手套箱内取1—6克钠样品,转入不锈钢釜 In order to improve the accuracy of determination of trace carbon in metallic sodium and reduce the lower limit of analysis, the original distillation unit and the quantitative method have been greatly improved. The vacuum distillation-residue oxygen combustion-gas chromatography Circuit sodium and high purity sodium in trace carbon. Using a treated quartz crucible, 1-6 g of sodium sample was taken from the loop or glove box under argon atmosphere and transferred to a stainless steel autoclave