CAEAL/CCME Pilot Study
The CAEAL Board of Directors has reviewed and approved the PHC Pilot study that has been proposed by the CCME, with technical support from Environment Canada. Laboratories that wish to become accredited for PHC in soil should participate in this study. The details of this pilot are outlined below.
- to confirm that the Canada Wide Standard (CWS) for Petroleum Hydrocarbons can be applied with adequate precision and accuracy
- to confirm the assessment of data meets all CCME and potential legal requirements
- to produce proficiency testing samples with demonstrated stability of a minimum of 10 weeks
- to generate an estimate of uncertainty in determination of PHC fractions that could be used for possible future round robin studies
- to establish study design criteria that could be used as a model for possible future proficiency testing studies
- to establish a source of standards and reference materials available for distribution to Canadian researchers, consultants and laboratories
- to promote the widespread use of the analytical method in support of the CWS for PHC's
Reference: the method is to be posted on the CCME webpage: www.ccme.ca.
The study will consist of eight (8) soil samples (4 loams, 4 clays) that have been spiked with weathered hydrocarbon products as well as eight (8) ampouled or vialled standards.
The F1 fraction will be represented by four (4) 5 gram samples provided in duplicate and four (4) standards.
The F2, F3, and F4 fractions will be represented by four (4) 5 gram samples provided in duplicate and four (4) ampouled or vialled standards.
The F1 standards will be prepared in methanol. Standards will be provided in vials or ampoules having a volume of 3.0 to 5.0mL. The concentration range of the standards will be approximately 250mg/mL to 2500mg/mL total PHC.
The F2, F3, and F4 standards will be supplied in toluene. Standards will be provided in vials or ampoules having a volume of 3.0 to 5.0mL. The concentration range of the standards will be approximately 250mg/mL to 2500mg/mL total PHC.
The F1 concentration range will be a 30 - 3300 mg/kg spike of a weathered gasoline product. The spike will be delivered using methanol. Analysis of the samples will be based on the consumption of the entire sample and assuming a mass of 5.00 grams. One pair of samples may be a duplicate set.
The F2 concentration range will be approximately 150 - 6500 mg/kg. The F3 concentration range will be approximately 250 -12500 mg/ kg. The F4 concentration range will be approximately 1000 -12500 mg/ kg. The spiking material will be a mixture of weathered gasoline, diesel and lubricating oil contained in toluene. Analysis of the samples will be based on the consumption of the entire sample and assuming a mass of 5.00 grams. One pair of samples may be a duplicate set.
Two or three additional soil samples will be included in the round robin that will not be part of the assessment procedure. These will be used in future round robins and as reference materials.
Method of analysis: It is mandatory that participants employ the CCME method, using all prescribed elements and no performance-based alternatives. Participants wishing to explore performance-based alternatives may request additional samples, as available.
Shipment date: May 6, 2002
Results due: June 19, 2002
Reporting: Results are to be sent back on diskettes that will be preformatted. Lab comments will also be evaluated. The reference lab will be preparing a comprehensive Final Report, accompanied by a CAEAL cover letter.
Cost: $400.00 per lab (per set of samples).
Email Debbie Macey if you have questions.