城市污泥中镍及其化合物测定预处理分析方法的探讨

Discussion on Pretreatment Method of Determining Nickel and Its Compounds in Urban Sewage Sludge

污泥样品经微波消解后,原子吸收法测定城市污泥中镍及其化合物。系统地研究了微波消解污泥的方法,实验基于将成分复杂的污泥样品经硝酸、过氧化氢、高氯酸微波消解,溶解出污泥样品中的镍及其化合物,使其全部以镍离子形式存在于分析液中。

We used microwave digestion atomic absorption method to determine nickel and its compounds in urban sewage sludge. We made systematic research on microwave digestion method of sludge. We treated com- plex sludge samples with microwave digestion by nitric acid, hydrogen peroxide and perchloric acid, dissolved nickel and its compounds in sludge samples and made nickel existed as ions in the liquid.