NELAC Quality Systems Checklist s1
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NELAP Quality Systems Checklist Chemistry On-site
Date:______
Assessor:______
Organization Name:______
Analytical Grouping: SVOCs______
Methods: 525.2______
Person(s) Interviewed:______
Records Reviewed:______
Category Comments
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Terphenyl-D14 – recovery standard – add to each extract Confirmation
CCV Limit: ± 30%, ISTD ±50% from ICAL – beginning & end of run, IS>70%
Additional : One CCV per tune window. Continuing Tune window 12 hours,. DFTPP Calibration DDT Breakdown ≤20%. Resolution - Anthracene and phenanthrene should be separated by baseline. Benz[a]anthracene and chrysene should be separated by a valley whose height is less than 25% of the average peak height of these two compounds.
Data Analysis
Data Review
IDOC: ±30%, RSD <30% Demonstration of CDOC: ±30%, RSD <30% Capability
Duplicates
Equipment
Facilities
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Glassware
Minimum # of Cal Points: 3, RSD Limit: 30% Correlation Coefficient: ≥ 0.990 Initial Calibration RSD of RF <30% ICV Limit: ± 30%
Limit: ± 30% LCS
LODV: 1-4x LOD LOQV: 1-2x LOQ LOD/LOQ
Marginal Exceedences
Limit: ± 30% Matrix Spike
Method Validation
Non-Standard Methods
Personnel
Proficiency Testing
Ion ratios: <20% QC
Reagents & Media
Records
Records-Electronic
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Records-Raw Data
1L sample volume. Add 40-50mg Na2S2O3 . pH adjusted to < 2 with 6N HCl.
Sample Receiving Cyanazine: dechlorination/acidification immediately prior to analysis - analyze within 14 days; Atraton & Prometon: dechlorinate only.
Extraction Hold Time: 14 days Analytical Hold Time: 30 days Samples
Selectivity
SOP
Support Equipment
Surrogate Limit: ± 30% - 1,3-Dimethyl-2-Nitrobenzene, Perylene-d12, Triphenylphosphate Internal Standard Limit: ≥70% of mean ICAL – Acenaphthene-d10, Chrysene-d12, Phenanthrene-d10 Surrogates For SPE, add some of IS before extraction
Traceability
Work Cell
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Additional Comments:
Tuning Criteria From To Relative to m/z 51 10 80 198 68 0 2 69 70 0 2 69 127 10 80 198 197 0 2 198 198 base peak 199 5 9 198 275 10 60 198 365 1 100 198 441 present less than 443 442 (alt. base peak) 50 100 198 443 15 24 442
Extraction – 1 L sample - from disk or cartridge – ethyl acetate, then MeCl2, evap down
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