方法将上述两种方法与传统的磷钨酸镁沉淀法（PTA-Mg2+法）进行比较，分析各自的精密度、准确性、特异性和干扰因素。
Methods The two homogenous methods were compared with the precipitation method ( PTA-Mg 2 + method ), their precision , accuracy , specificity and interference were also analyzed .
钨酸镁