Investigation of Trace Elemental Concentration and Extraction Rate of Sibin Limestone by ICP-MS

摘要

The trace elements in Sibin Limestone were determined by Inductively Coupled Plasma Mass Spectrometry (ICP-MS).The different rates of elemental extraction in Sibin Limestone were determined in different granularity,different solution concentration,different temperature and different time.The results showed that the Sibin Limestone are rich in Ca,Si,Mg,Sr,Fe,Cu,Mn,Zn,Ti,Ba,Na,K which are essential elements of human body.The content of Sr is between 1 mg/L and 4 rag/L,which is good for health.The-200 mesh samples which were extracted at 25℃ were safe.The unsafe elements,such as Se,As,Cu,Ba,Cd,Pb,Mn,Ni and Ag,meet the national standards for the daily drinking water quality.The smaller the granularity,the more concentrated,the higher the temperature and the longer the time,the more trace elements can be extracted.