植物样品中微量氟化物总量的测定,在样品处理方法上,以高温灰化法较为普遍。在定量方法方面,自从Belcher等提出茜素络合酮(即氟试剂,简称ALC)三元络合物ALC-La-F,或ALC-Ce-F的分光光度法后,由于其灵敏度、选择性均优于各种褪色法,已被广泛采用。高温灰化法由于样品经高温处理,常存在回收率不够理想的问题。我们使用湿灰化法,回收率、重现性均较好。 Determination of the total amount of trace fluoride in plant samples, the sample processing methods, the high temperature ashing method is more common. In the quantitative method, since Belcher et al. Proposed the spectrophotometry of the alizarin complexed ketone (ie, fluorine reagent, ALC) ternary complex ALC-La-F, or ALC-Ce-F, due to its sensitivity, Sex are better than all kinds of fading method, has been widely used. High-temperature ashing As the sample is treated at high temperatures, there is often the problem of insufficient recovery. We use the wet ashing method, recovery, reproducibility are better.