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本文用罗丹明6G测定矿石中微量镓,得到了满意的结果。在酸度为6～6.5N中以苯萃取有色络合物,于波长528nm处,摩尔吸光系数为6.7×10~4。嫁量在0～5微克/5毫升范围内符合比尔定律。镓是亲石元素,利用饱和硫化氢溶液沉淀分离铜消除干扰。大多数共存元素不干扰测定镓,方法具有较好的选择性,简便快速,灵敏度较高、稳定。 分析步骤 1.不含铜试样 称取0.1000～0.5000克试样于聚四氟乙烯烧杯中,加15毫升盐酸、5毫升硝酸。低温加热溶解30分钟,再加5毫升氢氟酸继续溶解
In this paper, the determination of trace amounts of gallium ore with rhodamine 6G, obtained satisfactory results. In the acidity of 6 ~ 6.5N benzene extraction of colored complexes, at a wavelength of 528nm Department, the molar absorption coefficient of 6.7 × 10 ~ 4. Marketed in the 0 ~ 5 micrograms / 5 ml range in line with Bill’s law. Gallium is a lithophile element that utilizes the precipitation of saturated hydrogen sulphide solution to eliminate copper interference. Most coexisting elements do not interfere with the determination of gallium, the method has good selectivity, simple and rapid, high sensitivity and stability. Analysis step 1. Copper-free sample Weigh 0.1000 ~ 0.5000 g sample in teflon beaker, add 15 ml of hydrochloric acid, 5 ml of nitric acid. Low temperature heating dissolved for 30 minutes, plus 5 ml of hydrofluoric acid to continue to dissolve