锌的电化学当量和原子量的绝对测定II. 最终测定
Absolute Determination of the Electrochemical Equivalent and the Atomic Weight of Zinc II. Final Determination.
作者信息
Marinenko George, Foley Robert T
机构信息
Institute for Materials Research, National Bureau of Standards, Washington, D.C. 20234.
The American University, Washington, D.C. 20016.
出版信息
J Res Natl Bur Stand A Phys Chem. 1975 Nov-Dec;79A(6):747-759. doi: 10.6028/jres.079A.031.
A new, successful approach to the determination of atomic weights of suitable elements has been demonstrated in this research. An absolute constant-current coulometric method was employed for the determination of the electrochemical equivalent and the atomic weight of zinc. The effects of possible sources of systematic error were investigated and appropriate corrections applied. The newly determined values of the two constants are 0.3387958 mg C and 65.3771 respectively. The uncertainty in the atomic weight of zinc was reduced by more than an order of magnitude. The publication of partial data resulted in the revision of the value of the atomic weight of zinc by the International Union of Pure and Applied Chemistry.
本研究展示了一种测定合适元素原子量的全新且成功的方法。采用绝对恒流库仑法测定锌的电化学当量和原子量。研究了可能的系统误差来源的影响，并进行了适当校正。这两个常数的新测定值分别为0.3387958毫克碳和65.3771。锌原子量的不确定度降低了一个多数量级。部分数据的发表导致国际纯粹与应用化学联合会对锌原子量的值进行了修订。
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