Certified reference materials ? beech leaves and spruce needles ?for the quality control in monitoring damage in forests by acid deposition

1989 ◽  
Vol 335 (7) ◽  
pp. 833-838 ◽  
Author(s):  
E. A. Maier ◽  
H. Muntau ◽  
B. Griepink
Keyword(s):  
Quality Control ◽  
Acid Deposition ◽  
Reference Materials ◽  
Certified Reference Materials ◽  
Spruce Needles

scholarly journals Production and Use of BCR Reference Materials for Quality Assurance in Environmental Analysis: An Update

2001 ◽  
Vol 84 (6) ◽  
pp. 1786-1792 ◽  
Author(s):  
Philippe Quevauviller
Keyword(s):  
Quality Control ◽  
Quality Assurance ◽  
Reference Materials ◽  
Environmental Analysis ◽  
Control Charts ◽  
Certified Reference Materials ◽  
Background Information ◽  
Analytical Quality Control ◽  
Analytical Quality ◽  
Invaluable Tool

Abstract Reference materials represent an invaluable tool for analytical quality control. Certified Reference Materials (CRMs) are used for the validation of methods, whereas various types of (uncertified) Reference Materials (RMs) are used for routine quality control (establishment of control charts) and interlaboratory testing (e.g., proficiency testing). This paper provides background information on the production and use of environmental RMs and describes recent CRMs produced by the BCR (European Commission) for quality assurance in environmental analysis.

Experience with Certified Reference Material Proficiency Testing for Quality Control of Wheat

1998 ◽  
Vol 6 (A) ◽  
pp. A53-A61
Author(s):  
Judit Budai ◽  
Judit Fükó
Keyword(s):  
Quality Control ◽  
Reference Material ◽  
Proficiency Testing ◽  
Reference Materials ◽  
Certified Reference Material ◽  
Certified Reference Materials ◽  
Long Term Stability ◽  
Determining Factors ◽  
Chemical Section

The Chemical Section of OMH1,2 embarked on the preparation of a series of wheat samples as Certified Reference Materials (CRMs) in 1992. The certification processes were carried out according to the recommendations of ISO. Since then we have developed a series of flour samples as well. The investigations of the long-term stability and the application of wheat and flour CRMs are continuous. Wheat is one of the most widely grown crops in Hungary and it is one of the major determining factors of the economy. Its uniform and objective qualification is of great importance. There are well-equipped laboratories available with sufficient experience but, as the proficiency testing regularly showed, certified samples need to be used to achieve exact and uniform measuring results.

Certified reference materials for the quality control of rare earth element determinations in the environment

2002 ◽  
Vol 21 (11) ◽  
pp. 762-773 ◽  
Author(s):  
Kees J.M Kramer ◽  
Edith P.M de Haan ◽  
Henk van het Groenewoud ◽  
Walter Dorten ◽  
Gerard N Kramer ◽  
...  
Keyword(s):  
Quality Control ◽  
Rare Earth ◽  
Rare Earth Element ◽  
Reference Materials ◽  
Earth Element ◽  
Certified Reference Materials

Certified reference materials (CRMs 479 and 480) for the quality control of nitrate determination in freshwater

The Analyst ◽  
1996 ◽  
Vol 121 (1) ◽  
pp. 83-88 ◽  
Author(s):  
Ph. Quevauviller ◽  
M. Valcárcel ◽  
M. D. Luque de Castro ◽  
J. Cosano ◽  
R. Mosello
Keyword(s):  
Quality Control ◽  
Reference Materials ◽  
Certified Reference Materials ◽  
Nitrate Determination

scholarly journals PENGGUNAAN BAHAN ACUAN BERSERTIFIKAT OYSTER TISSUE 1566b SEBAGAI INTERNAL QUALITY CONTROL UNTUK MENENTUKAN KADAR TIMBAL TOTAL DALAM TEPUNG IKAN MARLIN DENGAN ELECTROTHERMAL ATOMIC ABSORPTION SPECTROMETRY

2015 ◽  
Vol 17 (2) ◽  
pp. 131-137
Author(s):  
Willy Cahya Nugraha ◽  
Yohanes Susanto Ridwan
Keyword(s):  
Quality Control ◽  
Reference Materials ◽  
Certified Reference Materials ◽  
Electrothermal Atomic Absorption Spectrometry ◽  
Absorption Spectrometry ◽  
Lead Content ◽  
Internal Quality Control ◽  
Internal Quality ◽  
Oyster Tissue ◽  
High Level

Lead is widely knows as one of the harmful pollutants for humans. Contaminated fishery built by lead may endanger the consumption body. Therefore, contamination monitoring for the fishery products is necessary to be conducted. To ensure the validity of data, Oyster Tissue 1566b certified reference material was used as Internal Quality Control. Marlin fish powder and certified reference materials were analyzed with the same method, personnel, duration or time, equipment and environmental conditions. As the results, it was found that the lead contained in CRM was 0.306 mg.kg-1 with 11.9 % rsd, which is within range of lead content in  the certificate. The method was applied for Marlin Fish. Lead content obtained in this study (1.821 mg.kg-1 with 11.06 % rsd) can be reported with high level of confidence.Keywords: Lead, Certified Reference Materials, Marlin fish

Sign in / Sign up

Export Citation Format

Share Document