中国钼业2026，Vol.50Issue(4)：80-85,6.DOI:10.13384/j.cnki.cmi.1006-2602.2026.04.012
ICP-OES法测定低品位铜锡钨多金属矿石中钙、镁含量
Determination of calcium and magnesium contents in low-grade copper-tin-tungsten polymetallic ores by ICP-OES
李杰阳1
作者信息
- 1. 云南锡业股份有限公司卡房分公司,云南个旧 661000
- 折叠
摘要
Abstract
This paper presents a method for the determination of calcium and magnesium contents in low-grade copper-tin-tungsten poly-metallic ores.The samples were effectively decomposed using a combined acid system of ammonium bifluoride-hydrochloric acid-nitric acid-hydrobromic acid.Ethylenedi aminetetraacetic acid(EDTA)was employed to mask interfering metal ions,and strontium chloride was added to eliminate anionic interferences.The determination was carried out by inductively coupled plasma optical emission spec-trometry(ICP-OES)in a 5％hydrochloric acid medium,with calcium measured at 317.933 nm and magnesium at 285.213 nm.Ex-perimental results indicate that ammonium bifluoride effectively disrupts the silicate mineral structure;EDTA and strontium chloride suppress interferences from Fe3+、Al3+、W6+,as well as sulfates and phosphates,respectively.The 5％hydrochloric acid medium en-sures measurement stability and accuracy.The calibration curves were linear in the ranges of 0.00～150.00 μg/mL for calcium and 0.00～15.00 μg/mL for magnesium.The detection limits were 0.040％for calcium and 0.015％for magnesium.The relative stand-ard deviations(RSDs)of the results were all below 1％(n=11),and the spiked recoveries ranged from 98.3％to 100.2％.This method is simple in operation,exhibits strong anti-interference capability,and is suitable for rapid and accurate analysis of calcium and magnesium in complex polymetallic ores.关键词
电感耦合等离子体发射光谱/低品位铜锡钨多金属矿石/钙/镁Key words
inductively coupled plasma optical emission spectrometry(ICP-OES)/low-grade copper-tin-tungsten polymetallic ore/calcium/magnesium分类
化学化工引用本文复制引用
李杰阳..ICP-OES法测定低品位铜锡钨多金属矿石中钙、镁含量[J].中国钼业,2026,50(4):80-85,6.
