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采用等离子体发射光谱法测定了ＭＯＳ级盐酸和硝酸中钠的含量。采用了富集技术，研究了降低空白和降低检测限的措施，检测限达到０．０１μｇ／ｍＬ。
The content of sodium in MOS grade hydrochloric acid and nitric acid was determined by plasma emission spectrometry. Enrichment techniques were used to study the measures to reduce the blank and reduce the detection limit, the detection limit reached 0.01μg / mL.