当前,全国是一片大好形势,稀土元素在工业上的应用发展很快,正在沿着毛主席指出的赶超世界先进水平突出“超”字,闯出自已的道路前进。我厂生产的多种合金钢铁,加入适量稀土元素,取得了一定的成绩。面对当前大好形势,我们巳开始认识到化学分析也必须为三大斗争服务,“玻璃捧”上必须突出政治。分析方法同样存在着两条道路的斗争。坚持走社会主义道路,必须是:准、快、简、省、自力更生的道路。前一阶段,我们测定球铁中微量总稀土曾用氟化物分离,重量法或偶氮胂Ⅰ比色法,需要数小时,后来改用乙醚萃取、偶氮胂Ⅲ比色法时间可减至1～2小时。但还 At present, the whole country is a very good situation. The application of rare earth elements in industry has been developing very rapidly and is following the principle of “catching the world’s advanced level out of the world” pointed out by Chairman Mao and advancing its own path. I plant a variety of alloy steel, adding the right amount of rare earth elements, and achieved some results. In the face of the current excellent situation, we have begun to realize that chemical analysis must also serve the three major struggles and that “glass” must emphasize politics. There is also a two-way struggle between analytical methods. To adhere to the socialist road must be: quasi-fast, simple, provincial and self-reliance. In the previous stage, we determined that the total trace rare earths in the ductile iron had been separated by fluoride. The gravimetric method or the arsenazo I colorimetric method required a few hours and then switched to ether extraction. The arsenazosyllin colorimetric time was reduced to 1 ~ 2 hours. But also