北京有色金属研究总院林中鹏和金静如提出采用重叠还原法将试样中硫全量还原为H_2S,然后利用数字示波极谱仪进行测定的方案。该法能在相当程度上做到灵敏度高和精密度好。对含硫低至10~(-4)％、高达0.5％的试样都能进行精密测定,相对标准差≤1.5％。曾用于金属锡和铜中硫的分析。该法已推荐为五氧化二钒中,硫分析的国家新标准方法。(刘翰晟) Beijing Nonferrous Metals Research Institute Lin Zhongpeng and Jin Jingru proposed using overlapping reduction method to restore the total amount of sulfur in the sample to H2S and then use the digital oscilloscope to measure the scheme. This method can achieve a high degree of sensitivity and precision to a good extent. For sulfur content as low as 10 ~ (-4)%, up to 0.5% of the samples can be accurately measured, the relative standard deviation ≤ 1.5%. Used for the analysis of sulfur in metallic tin and copper. The law has been recommended as a new standard method for the analysis of sulfur in vanadium pentoxide. (Liu Han Sheng)