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硅铁中铝、钙、铬、锰和磷等元素的常规分析,要用几种不同的化学分析方法,操作较繁杂,费时,耗费也大。我们用ICP-AES法测定了硅铁中上述五个元素,方法简便,快速,经济,能得到较好的分析结果。仪器与工作条件岛津ICPQ-1000型。入射功率1.2kW,反射功率小于5W;载气流量1.0L/min,辅助气流量1.21/min,冷却气流量11L/min;观察高度感应线圈上15mm,积分时间20s,玻璃气动雾化器和双筒雾室。标准溶液用各元素的标准贮备液(浓度均为1mg/ml)配制标准系列。表1列出了标准系列分组,各元素的高浓度点,波长和测定范围。溶液中含盐酸均为2％(V/V)。分析步骤准确称取0.1500g硅铁于30mL聚
Ferrosilicon in the aluminum, calcium, chromium, manganese and phosphorus and other elements of the routine analysis, to use several different chemical analysis methods, the operation is more complicated, time-consuming and costly. We determined the above five elements in ferrosilicon by ICP-AES method, the method is simple, fast and economical, and can get better analysis results. Equipment and working conditions Shimadzu ICPQ-1000 type. The incident power is 1.2kW and the reflected power is less than 5W; the carrier gas flow rate is 1.0L / min, the auxiliary gas flow rate is 1.21 / min and the cooling gas flow rate is 11L / min; the height induction coil is observed on 15mm and the integration time is 20s; Tube fog chamber. Standard solution with standard elements of each stock solution (concentration of 1mg / ml) prepared standard series. Table 1 lists the standard series of groups, each element of high concentration point, wavelength and measurement range. The solution contains hydrochloric acid 2% (V / V). Analysis steps Weigh accurately 0.1500g ferrosilicon in 30mL poly