Quantitation of Sodium Sulphite in Injection Liquid by Chemiluminescence Method 针剂注射液中亚硫酸钠(E221)含量的化学发光测定
Effects of Ascorbic Acid and Sodium Sulphite on the Chemical Composition and Colour of Green Tea After Storage 抗坏血酸和亚硫酸钠(E221)对绿茶贮藏后化学成分和色泽的影响
The KClO_3 is used as oxidant to pretreat silver concentrate, the effecting factors such as muriatic acid concentration, KClO_3 adding amount, the sodium sulphite concentration and the time on silver leaching rate are discussed. 利用KClO3作氧化剂,对银精矿进行氧化预处理,考察了盐酸浓度、氧化剂加入量、亚硫酸钠(E221)浓度和浸出时间对银浸出率的影响。
The extraction of silver from lead & rich chlorination residue using sodium sulphite 用亚硫酸钠(E221)从高铅氯化渣中提银
Cr ( VI ) can be determined by this method after prior reduction to Cr ( III ) with saturated sodium sulphite in sulphuric acid. Cr(VI)在用饱和亚硫酸钠(E221)预先还原为Cr(III)后,也可用该方法测定。