论文部分内容阅读
1987年7月14～18日在大连召开了原子吸收光谱法测定锰和钴的国家标准试验总结讨论会,会上对这两项标准进行了认真研究,并对标准草案提出了修改意见,确定标准审定稿,将于1987年9月20～26日在重庆召开的全国审定会上进行审定。 1987年7月20～26日在秦皇岛市召开了硅、锰、磷三个元素国家标准方法精密度试验总结讨论会,会上讨论了草酸-硫酸亚铁硅钼蓝光度法测定硅;硝酸铵氧化容量法和高碘酸钠(钾)氧化光度法测定锰;二安替比林甲烷磷钼酸重量法;磷钼酸铵容量法和乙酸丁酯萃取
July 1987 July 14 to 18 held in Dalian, atomic absorption spectrometry for the determination of manganese and cobalt national standard test summary seminar, the two standards were carefully studied, and proposed amendments to the draft standard to determine The standard draft, will be held in September 1987 from 20 to 26 at the national validation meeting held in validation. 1987 July 20 ~ 26 in Qinhuangdao City held a silicon, manganese, phosphorus three national standards precision test summary seminar, the meeting discussed the oxalic acid - ferrous sulfate ferrous sulfate molybdenum blue spectrophotometric determination of silicon; ammonium nitrate Oxidizing volumetric method and sodium periodate (potassium) oxidation photometric method for the determination of manganese; diantipyrylmethane phosphomolybdate gravimetric method; ammonium phosphomolybdate volumetric method and butyl acetate extraction