Kinetics studies shows that: (1) both the disappearance of DNS and appearance of DSD fit the pseudo-first-order reactions, (2) the overall rates of DNS reduction by Fe0 are controlled by external mass transport other than chemical reactions.

• 动力学研究表明DNS的零价铁还原被传质而非化学反应所控制,DNS的消失以及DSD酸的生成均为拟一级反应。