文献类型：期刊文献

英文题名：Application of Temperature Programmed Oxidation-Infrared Technique in the Analysis of Sulfur Occurrence and Genesis in Phosphate Rock

作者：Xu, Qiuyuan Tang, Shiyun Tang, Anjiang Tian, Yazhou

第一作者：Xu, Qiuyuan

通信作者：Tian, YZ[1]

机构：[1]Guizhou Univ, Coll Resources & Environm Engn, Key Lab Karst Georesources & Environm, Minist Educ, Guiyang 550025, Guizhou, Peoples R China;[2]Guizhou Inst Technol, Coll Chem Engn, Guiyang 550003, Peoples R China

第一机构：Guizhou Univ, Coll Resources & Environm Engn, Key Lab Karst Georesources & Environm, Minist Educ, Guiyang 550025, Guizhou, Peoples R China

通信机构：corresponding author), Guizhou Univ, Coll Resources & Environm Engn, Key Lab Karst Georesources & Environm, Minist Educ, Guiyang 550025, Guizhou, Peoples R China.

年份：2022

卷号：2022

外文期刊名：JOURNAL OF ANALYTICAL METHODS IN CHEMISTRY

收录：;Scopus(收录号：2-s2.0-85134773991);WOS:【SCI-EXPANDED(收录号:WOS:000830435100001)】；

基金：AcknowledgmentsThe research was supported by the Science and Technology Planning Project of Guizhou Province (Qiankehezhicheng [2021] Yiban 493), GIT Academic Seedling Training and Innovation Exploration Project (No. GZLGXM-11), and 51164004 Fund.

语种：英文

摘要：In this study, a temperature programmed oxidation-infrared (TPO-IR) technique was improved and applied in the analysis of sulfur occurrence and genesis in phosphate rock. Phosphate rocks from three regions (KYP, ZJP, and WAP) were selected for the detection of sulfur species by TPO-IR combined with XRD, SEM, EDS, and XPS characterization. TPO-IR results show that the total sulfur contents of the three phosphate rocks were 2.14% for KYP, 1.18% for ZJP, and 1.06% for WAP. In the low-temperature area (<1000 degrees C), TPO-IR detected that both KYP and WAP contain FeS with a characteristic temperature of about 513 degrees C and their contents were 9.22 parts per thousand and 0.64 parts per thousand, respectively. In high-temperature areas (>1000 degrees C), the TPO-IR curves suggest that sulfate is the main sulfur species in the three phosphate rocks. Typically, the characteristic temperature near 1070(o)C belongs to MgSO4, and the characteristic temperature near 1290 degrees C belongs to CaSO4. Due to the incomplete TPO-IR database of sulfur reference materials at present, it is not possible to assign all sulfur species in high-temperature areas. However, in a sense, this research provides theoretical basis and experimental support for the application of the TPO-IR technique for the detection of sulfur species in other solid minerals.