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用四苯硼化钠比浊法测钾时,加入甲醛和聚乙烯醇溶液,将使标准曲线的线性关系得到改善,从而提高了四苯硼化钠比浊法的精密度。
When potassium tetraphenylborate turbidimetric method is used to measure potassium, adding formaldehyde and polyvinyl alcohol solution will improve the linearity of the standard curve and improve the precision of sodium tetraphenylborate turbidimetric method.