GB/T 8943.1-2008 in English

GB/T 8943的本部分规定了两个方法，即二乙基二硫代氨基甲酸钠分光光度法（方法A）和火焰原子吸收分光光度法（方法B），测定纸浆、纸和纸板中铜的含量，仲裁时应采用火焰原子吸收分光光度法（方法B）。本部分适用于各种纸浆、纸和纸板中铜含量的测定。本部分代替ＧＢ／Ｔ８９４３．１—１９８８。
本部分与ＧＢ／Ｔ８９４３．１—１９８８相比有如下变化：
———增加了警告语；
———增加了规范性引用文件；
———修改了部分叙述语句。

Scope

warn! In the method specified in this part of GB/T 8943, it is necessary to use certain dangerous chemicals and gases that can form explosive mixtures with air, so care must be taken to ensure compliance with relevant safety precautions. This part of GB/T 8943 specifies two methods, namely diethyldithiocarbamate sodium spectrophotometry (method A) and flame atomic absorption spectrophotometry (method B), for the determination of copper in pulp, paper and paperboard The content of the flame atomic absorption spectrophotometry (method B) shall be used for the arbitration. This section applies to the determination of copper content in various pulp, paper and paperboard.