资料[1]对用硫氰酸盐法全差示测定高含量钨的误差进行了较全面讨论。因一些资料[2、3]对硫氰酸盐显色体系测钨能否获得精确结果持保留态度,本文曾对其化学反应历程作了较详细的考察和探讨,找出了造成误差的一些原因,拟定了适宜的化学步骤,现又经过了近二年的生产考核后,认为该化学反应历程有良好的再现性和满意的准确度,故以此作为资料[1] The data [1] conducted a more complete discussion on the error of the high-level determination of tungsten with thiocyanate method. Due to some data [2, 3] on the thiocyanate colorimetric system Tungsten can obtain accurate results with reservations, this article had its chemical reaction process made a more detailed investigation and discussion, to identify the error caused by some Reason, the preparation of the appropriate chemical steps, and now after nearly two years of production assessment, that the chemical reaction process has good reproducibility and satisfactory accuracy, so as a data [1]