Home > QM, accreditation, proficiency tests > Round robin tests XRF-analysis > 139-2017-geopt41a-ssco-1
Logo

Round robin tests XRF-analysis XRF Round-robin test GeoPT 41A, England - SSCO-1, Mineralised Stream Sediment

Study organized by:
International Association of Geoanalysts and Geostandards Newsletter - GeoPT41A
Material of proficiency test:
SSCO-1, Mineralised Stream Sediment
Study finished:
2017 - 7
Literature:
Report - GeoPT41 Proficiency Testing Round 41A (Laborcode CRB = Z124)

major elements [wt %]

CRBRV1sRVZ-Score
Na₂O1,7801,8000,033-0,300
MgO0,7300,7200,0150,330
Al₂O₃11,01011,0700,154-0,190
SiO₂69,42069,4200,7340,000
P₂O50,1860,1860,0050,010
S *0,2330,2530,061-0,160
K₂O3,5403,5510,059-0,090
CaO1,5401,5390,0290,020
TiO₂0,4040,3960,0090,460
Fe₂O₃tot6,5906,5450,1540,150
MnO0,4270,4240,0100,160
L.O.I. *3,4903,6600,520-0,160
TC54125302116,7000,470
TOC*39033254984,0000,330

trace elements [µg/g]

CRBRV1sRVZ-Score
Ag3,803,800,200,00
Ba775,00779,4022,90-0,10
Ce96,0099,904,00-0,48
Cl *150,00158,00106,00-0,04
Co8,008,100,50-0,08
Cr16,0016,500,90-0,30
Cu375,00365,0012,000,42
Ga17,0016,100,800,56
Hf6,506,500,400,00
La42,0037,601,701,26
Mo15,0013,000,701,41
Nb18,0018,701,00-0,38
Nd33,0031,601,500,47
Ni11,009,000,501,93
Pb921,00917,0026,300,08
Pr9,008,500,500,53
Rb128,00126,704,900,13
Sc5,006,300,40-1,70
Sm7,005,800,401,74
Sr190,00189,006,900,07
Th12,0011,100,600,75
U2,003,300,20-2,92
V53,0055,502,40-0,51
Y28,0026,101,300,73
Zn602,00605,0018,50-0,08
Zr227,00230,008,10-0,18

Legend

CRB
results CRB
cooperative test
results collaborative study
1s-RV
Standard deviation collaborative study
Z-Score
Difference of measured value from mean study
*
Value not certified
Download results on this study as pdf-file

Asbestos Analysis0

Reliable analysis of asbestos with SEM/EDXORDER NOW!

Order inquiry & contact

  • Tel.: +49 (0)5505 // 940 98-0
  • fax: +49 (0)5505 // 940 98-260

News

Feb 18, 2026

Asbestos in play sand: Consumer Advice Center NRW warns of contaminated kinetic sand

Several states, including the Consumer Advice Center NRW, are now warning of asbestos in colorful play sand and decorative sand from China. Find out more about this issue here. ... read more

May 21, 2025

Asbestos in a cigarette butt: a special caper of the tobacco industry - our contribution to World No Tobacco Day

It is well known that smoking causes cancer. But did you know that some cigarettes even used to contain asbestos? You read that correctly: The same substance that is now strictly forbidden and for which there are strict rules on handling and disposal during renovation work was once in cigarette filters – as a supposed health promise! ... read more

May 9, 2025

Testing raw materials with XRF — exciting insights into areas of application

For decades, X-ray fluorescence (XRF) analysis has been an indispensable tool for raw material control in the industry. But for which applications are XRF services exactly relevant? Our B2B customer, Dr. Krakow Rohstoffe GmbH, clearly shows one area of application on his YouTube channel. ... read more

Downloads

Important information