Joseite A was taken from the Dadongchang Pb-Zn deposit in Yunuan Province.

硫碲铋矿A产于云南省大硐厂铅矿床，与自然铋、辉铋铅矿井生。

Both volumetric method and gravimetric method can be used for determination of Zn in thiofide ZDBC.The gravimetric method is easy to operate but it spents more analysis time.

容法和重法可用于测定橡胶硫化促进剂丁基硫代氨基甲酸(ZDBC)中的。

This article briefly introduces the study that pure alkali - melting process treats the vacuum dezincing furnace slag and comprehensively recovers Ge, In, Ag, Pb and Zn from it.

简要介绍了碱熔法处理真空炉渣,综合回收锗、铟、银、铅、有价金属的试验研究。

Methods Certain amounts of and Zn were put into the wastewater to produce hydrogen (H2) and the H2 reacted with S2-to form H2S, and sulfuret was separated from the wastewater.

方法在废水样中加入一定的浓硫酸和粒,生成H2,利用H2和S2-结合生成H2S,以分离硫化物。