Field Application of Portable XRF with Glass Bead Certified Reference Material(CRM) in Nickel Laterite Deposit

Eunju Kim; YoonSup Moon; Jangha Kim

doi:10.32390/ksmer.2023.60.2.099

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2023 Vol.60, Issue 2 Preview Page Next Page

Technical Report

Field Application of Portable XRF with Glass Bead Certified Reference Material(CRM) in Nickel Laterite Deposit 니켈 라테라이트 광상에서 유리 비드 인증표준물질(CRM)을 활용한 휴대용 XRF 현장 적용 사례

30 April 2023. pp. 99-111

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Abstract

Following QA/QC procedures, portable XRF (p-XRF) field tests were performed on borehole samples from nickel laterite deposits and the results were compared with lab-XRF results. To verify the reliability and accuracy of the results obtained by p-XRF in the field, certified reference materials were prepared as glass beads and analyzed together with samples. The results showed that the overall contents of each element were generally lower in wet samples than in pulp samples, and the trend in the element content by depth was related to the degree of weathering of the laterite. For the element of interest, Ni, correction was performed using Ni-Fe correlation and the calculated values were found to be similar to the lab-XRF results. The derived correction coefficient was applied to another borehole sample to confirm its applicability to other boreholes. The corrected values of the wet samples showed a decrease in the deviations from lab-XRF data, confirming the validity of the correction method.

Keywords

Nickel laterite deposit

QA/QC

Glass Bead CRM

Portable XRF

Nickel content

니켈 라테라이트 광상의 시추시료에 대하여 QA/QC 절차에 따라 p-XRF 현장 시험을 수행하여 lab-XRF 결과와 비교하였다. 현장에서 p-XRF 장비를 활용하여 측정한 값의 신뢰도와 정확도를 확보하기 위해 인증표준물질(CRM)을 유리 비드로 제작하여 함께 분석하였다. 현장시험 결과 각 원소들의 함량은 펄프시료보다 습윤시료에서 전체 함량은 대체로 낮게 측정되었고 심도별 분석 원소들의 함량 변화는 라테라이트의 풍화 정도와 연관성이 나타났다. 주요 원소인 Ni는 Ni-Fe 상관관계를 이용하여 시료별 보정을 통해 정확한 값을 획득하고자 하였으며 보정을 통해 계산한 값은 lab-XRF 분석 결과와 유사하게 나타났다. 도출된 보정계수를 다른 시추공에 적용 가능 여부를 확인했을 때 습윤시료의 보정값은 lab-XRF과의 차이가 감소하여 보정 방법의 유효성을 확인하였다.

키워드

니켈 라테라이트 광상

품질보증 및 품질관리

유리 비드형 인증표준물질

휴대용 XRF

니켈 함량

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Information

Publisher :The Korean Society of Mineral and Energy Resources Engineers
Publisher(Ko) :한국자원공학회
Journal Title :Journal of the Korean Society of Mineral and Energy Resources Engineers
Journal Title(Ko) :한국자원공학회지
Volume : 60
No :2
Pages :99-111
Received Date : 2023-02-17
Revised Date : 2023-03-13
Accepted Date : 2023-04-21
DOI :https://doi.org/10.32390/ksmer.2023.60.2.099

Journal of the Korean Society of Mineral and Energy Resources Engineers ISSN:2288-0291(Print) 2288-2790(Online) 한국자원공학회지

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