A new method to determine composition of sphalerite without secondary pollution based on CIELAB color space  

作　　者：Yong Liu Ning Duan Linhua Jiang Hongping He Han Cheng Jiaqi Liao Yanli Xu Wen Cheng Ying Chen Guangbin Zhu Fuyuan Xu 

机构地区：[1]School of Materials Science and Engineering,Anhui University of Science&Technology,Huainan,Anhui,China [2]State Key Laboratory of Pollution Control and Resources Reuse,College of Environmental Science and Engineering,Tongji University,Shanghai,China [3]Shanghai Institute of Pollution Control and Ecological Security,Shanghai,China [4]College of Chemistry and Environmental Engineering,Shenzhen University,Shenzhen,China [5]School of Environmental Science and Engineering,Tianjin University,Tianjin,China

出　　处：《SusMat》2023年第5期671-681,共11页可持续发展材料（英文）

基　　金：National Natural Science Foundation of China,Grant/Award Numbers:52174385,41877392;Fundamental Research Funds for the Central Universities,Tongji University,Grant/Award Number:22120220166。

摘　　要：Currently,most of the methods formineral materials analysis generate secondary pollution,which is detrimental to human health.For instance,traditionalmethods for sphalerite analysis in the zinc(Zn)smelting industry including chemical titration,atomic absorption spectrometry,and inductively coupled atomic emission spectroscopy.Colored indicators and toxic heavy metals are used in the analytical processes,causing severe pollution.For some methods,liquid is transformed into gaseous plasma,which is more dangerous to human health.Due to large quantities of sphalerite being used,secondary pollution cannot be ignored.This study proposes a green analysis method for the detection of sphalerite based on colorimetry,which does not generate secondary pollution.The results show that the strong substitution ability of iron(Fe)for Zn contributes to their inverse correlation in contents.The lattice parameters decrease with the increasing Fe content,resulting in a darker coloration.Here,key colorimetry parameters of L*,a*,and b*show clear linear correlations with the Zn and Fe contents.Compared with traditional approaches,this new method is environmental friendly with high sensitivity and accuracy.The relative error and relative standard deviation were less than 10%and 5%,respectively.This study provides a significant reference for nonpollution determination of other mineral materials.

关 键 词：analytical method for sphalerite CIELAB COLORIMETRY no secondary pollution original state detection 

分 类 号：TB3[一般工业技术—材料科学与工程]