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将样品磨细配制成悬浮液 ,并对悬浮剂的选择及化学干扰的消除进行了考查。为消除化学干扰 ,取适量悬浮液 ,加入 La3+ 溶液制成试液。将试液喷入空气 -乙炔火焰 ,以空白溶液为参比 ,用工作曲线法进行测定。测定结果与灰化法一致 ,相对误差小于± 1 .3%。方法简便、快速、准确
The sample was finely ground to form a suspension, and the choice of suspending agent and the elimination of chemical interference were examined. To eliminate chemical interference, take the appropriate amount of suspension, adding La3 + solution made of test solution. The test solution is injected into the air - acetylene flame, with a blank solution as a reference, with the working curve method for determination. The determination results are consistent with the ashing method, the relative error is less than ± 1.3%. The method is simple, fast and accurate