News News
Contact us
  • Customer service number:64321087
  • Commercial service telephone:13918059423
  • Technical service telephone:13918059423
  • Contact person: Mr. Cui 
  • Service
  • Address: room 107, building 8, no. 100, guilin road, xuhui district, Shanghai

Analyzing Rare Earth Elements (REEs) in Geologic Materials

The date of: 2021-07-14
viewed: 11

source:AZO Mining

When the term 'rare earth elements” (REEs) is used, it typically refers to a group of elements including the lanthanide series (La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu), as well as Sc and Y.

REEs are used extensively in electronics and advanced technologies, which are utilized in: airplanes, automobiles, medical devices, smartphones, television, computers, and camera lenses to name a few. The continual advancement of technologies has increased the demand for REEs, so the search for large deposits of REEs and quality ore material is ongoing.

Raw geological materials containing REEs are typically found in low concentrations. The ability to precisely detect and quantify REEs in geological samples is a critical component of successful geological exploration. This determines the viability of new mining sites, as well as help to expand existing ones.

The common techniques employed to analyze the REEs of geological samples include inductively coupled plasma mass spectrometry (ICP-MS), x-ray fluorescence (XRF), and instrumental neutron activation analyses (INAA). While XRF and INAA have their own advantages and disadvantages, both techniques have poor detection limits when compared to ICP-MS – a vital requirement when detecting low concentrations REEs.

As a result, measuring REEs content by ICP-MS post-sample preparation is the broadest used analytical technique. Using an appropriate sample preparation method – primarily acid digestion or fusion – prior to analysis by ICP-MS is critical in achieving accurate results. A variety of complications can be introduced to the analyzis, depending upon the chosen method of preparation.

The fusion of samples in lithium borate flux is a commonly used preparation technique for matrices that are very refractory, or otherwise hard to digest. In ICP-MS analysis, the high boron and lithium backgrounds in these types of prepared samples can present challenges, which would need addressing. For matrix effects because of the increased amount of total dissolved solids (TDS) in the prepared solution.

In addition, REEs are frequently present in very low concentrations, and many have oxide and isotopic overlaps - these factors require extra considerations. The combination of the All Matrix Solution (AMS, an online argon dilution system)1, second-generation Triple Cone Interface with OmniRing? technology2, four gas channels with on-line gas mixing, Universal Cell Technology (UCT), and multi-quadrupole design of PerkinElmer’s NexION? 5000 ICP-MS, provides many of the tools needed to overcome these issues.

This demonstration note outlines the analysis of three certified reference materials (CRMs) that contain REEs, prepared by fluxing the samples with lithium borate. The samples contain different ore materials all comprised of REEs, and are analogous to exploration samples.

Hot News / Related to recommend
  • 2023 - 09 - 28
    Click on the number of times: 0
    source:ScienceNewsExploresA rare earth element is one of 17 elements on the periodic table. These 17 metals include 15 “lanthanides.” Those are elements 57 to 71. Scandium (element 21) and yttrium (el...
  • 2023 - 09 - 26
    Click on the number of times: 0
    source:SASKTODAYREGINA — Immigration and Career Training and Trade and Export Development Minister Jeremy Harrison, is leading a delegation to the United Kingdom (UK) and Poland.The mission's focu...
  • 2023 - 09 - 25
    Click on the number of times: 0
    source:malaymailKUALA LUMPUR, Sept 21 — A member of the Dewan Negara suggested today that the government set up an agency, body or government-linked company (GLC) to supervise and manage all rare eart...
  • 2023 - 09 - 22
    Click on the number of times: 1
    source:subscribeOD6 Metals looks set to turbocharge the hulking resource at its Splinter Rock project in Esperance after revealing new rare earths assays with grades of up to 4159 parts per million to...
  • Copyright ©Copyright 2018 2020 Shanghai rare earth association All Rights Reserved Shanghai ICP NO.2020034223
    the host:Shanghai Association of Rare Earth the guide:Shanghai Development and Application Office of Rare Earth the organizer:Shanghai rare earth industry promotion center