读贵刊《用分析天平测判贵重金属首饰的纯度和类型》（下简记为《用》）一文［１］，觉得该文只是做了简单的原理计算，并未经过实验测定，是不切合实际的。黄金的密度比其他大多数重金属，如银、铜、锌、锡、镍等等都大，因此测定黄金的密度可利用来判断黄金首饰的纯度。为此 Read your magazine “analytical balances to determine the purity and type of precious metal jewelry,” (hereinafter referred to as “use”) a paper [1], that this article is simply a simple calculation of the principle has not been tested, is not Realistic The density of gold is greater than most other heavy metals, such as silver, copper, zinc, tin, nickel and so on, so determining the density of gold can be used to determine the purity of gold jewelry. to this end