CUPD-1 Certificate of Analysis

Certified Reference Material: Copper Anode

Printable version of the certificate (PDF, 133.59 kb)

First Issued : December 2003

Version: January 2009

Table 1 - CUPD-1 Certified Values
Element Unit Mean Within-lab Standard
Deviation
Between-labs Standard
Deviation
Extended standard uncertainty at 95% confidence
Ag µg/g 216 8 5 ± 4
As µg/g 306 9 19 ± 14
Au µg/g 3.9 0.3 0.4 ± 0.3
Bi µg/g 62 3 8 ± 4
Fe µg/g 40 3 5 ± 3
Ni µg/g 153 6 8 ± 5
Pb µg/g 69 6 10 ± 7
Sb µg/g 147 10 18 ± 9
Se µg/g 237 14 23 ± 13
Sn µg/g 5 1 2 ± 2

Table 2 - CUPD-1 Provisional Value
Element Unit Mean Within-lab Standard Deviation Between-labs Standard Deviation 95% Confidence
Interval
Te µg/g 56 3 7 ± 4

Table 3 - CUPD-1 Informational Values
Element Unit Mean Standard Deviation No. of Values
Cu % 99.5 0.1 15
Zn µg/g 11 1 10

Source

CUPD-1 is a copper anode donated by Phelps Dodge, El Paso, Texas, USA in January 1994.

Description

The material is in the form of sawings and contains approximately 99% copper, plus several elements at trace levels.

Intended use

CUPD-1 is suitable for the analysis of elements at trace levels. Examples of intended use are for quality control in the analysis of samples of a similar type, method development and arbitration.

Instructions for use

The assigned values pertain to the date when issued. CanmetMINING is not responsible for changes occurring after receipt by the user. CUPD-1 should be used “as is”, without pre-treatment. The contents of the bottle should be thoroughly mixed before taking samples.

Method of preparation

A magnetic separation was performed on the copper anode sawings. The resulting product was blended, degreased and bottled in 448 units, each containing 425 grams. This is the only size available.

State of homogeneity

The homogeneity of the stock was investigated using twenty-one bottles of CUPD-1 chosen according to a stratified random sampling scheme. Two samples were analyzed from each bottle. The analyses were performed by the analytical laboratory of Cyprus Miami Mining Corporation, Claypool, Arizona. Samples of 1.25 g were digested in nitric and perchloric acids and the determination was performed using inductively coupled plasma - atomic emission spectroscopy. A one–way analysis of variance technique (ANOVA) was used to assess the homogeneity of these elementsFootnote 1. The ratio of the between-bottles to within-bottle mean squares is compared to the F statistic at the 95% level of probability. No evidence of inhomogeneity was observed for iron, nickel, lead, selenium and silver. Further details are available in the certification report. Use of a smaller sample size will invalidate the statistical parameters contained herein.

Certification

Eighteen industrial, commercial, and government laboratories participated in an interlaboratory measurement program. Various elements were analyzed by methods of each laboratory's choice. A one-way analysis of variance technique was used to estimate the consensus value and other statistical parametersFootnote 1. Antimony, arsenic, bismuth, gold, iron, lead, nickel, silver, selenium and tin were given recommended values. Tellurium had a provisional value assigned. Informational values were given for copper and zinc. The extended standard uncertainty at 95% confidence was calculated only for the certified values from the variance from the interlaboratory measurement program and the homogeneity assessment. Full details of all phases of the work, including statistical analysis, the methods and the names of the participants are contained in CCRMP Report 03-1E.

Period of validity

These certified values are valid until December 31, 2030. Updates will be published on the CCRMP web site.

Legal notice

CanmetMINING has prepared this reference material and statistically evaluated the analytical data of the interlaboratory certification program to the best of its ability. The purchaser, by receipt hereof, releases and indemnifies CanmetMINING from and against all liability and costs arising out of the use of this material and information.

Certifying officers

Joseph Salley – Data Processor
Maureen E. Leaver – CCRMP Coordinator

For further information

The certification report is available free of charge upon request to:

CCRMP, CanmetMINING
555 Booth Street
Ottawa, ON K1A 0G1
Canada

Telephone: 613- 995-4738
Facsimile: 613-943-0573
E-mail: Contact CCRMP

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Reference