论文部分内容阅读
氯磺酚S测定钢中微量铌的方法已得到广泛应用,并列为标准方法。我们将该法试验改成快速测定,但当用于含钨、钼的铌钢分析时,结果严重偏低。为此,对铌钢中常见的钨、钼、钒、钛及锆等元素对测定的影响及其消除进行了研究。分析方法 1 试剂混合酸:H_3PO_4-HNO_3-HCIO_4-H_2O=1+2+4+9 酒石酸溶液:12%的HCI(1+19)溶液混合液:EDTA(1%)-HCI-乙醇=1+2+1 2 操作称样0.04克于50毫升两用瓶中,加混合酸4毫升,氢氟酸1滴,加热溶解,并冒烟至高氯酸浓烟腾逸到
The method for the determination of trace amounts of niobium in steel has been widely used as a standard method. We changed the test to a quick test, but when used for niobium steel containing tungsten and molybdenum, the results were significantly lower. To this end, the niobium steel common tungsten, molybdenum, vanadium, titanium and zirconium and other elements of the determination of the impact and eliminate. Analytical Method 1 Reagents Mixed acids: H 3 PO 4 -HNO 3 -HCIO 4 -H 2 O = 1 + 2 + 4 + 9 Tartaric acid solution: 12% HCI (1 + 19) Solution mixture EDTA (1%) HCI-ethanol = 1 + 2 + 1 2 operation, said the sample 0.04 g in 50 ml dual-use bottle, add mixed acid 4 ml, 1 drop of hydrofluoric acid, heated to dissolve and smoke to perchlorate smoke Teng Yi to