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磷酸与许多金属离子有很强的络合能力,生成的磷酸盐在一定的pH值范围内易生成沉淀。本方法的特点是利用混合酸分解样品,以元素的磷酸盐沉淀分离样品中大量元素,然后用ICP-AES法测定。本方法适用于岩石、土壤样中硼的测定,其检出限0.8ng/mL。
Phosphate and many metal ions have a strong ability to complex, the formation of phosphate in a certain pH range prone to precipitation. This method is characterized by the use of mixed acid decomposition of the sample, the elemental phosphate precipitation of large number of elements in the sample, and then determined by ICP-AES method. The method is suitable for the determination of boron in rock and soil samples with a detection limit of 0.8 ng / mL.