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Preparation of CRM for QA/QC in dioxin analysis and inter-laboratory study
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2004, v.17 no.2, pp.153-162
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(2004). Preparation of CRM for QA/QC in dioxin analysis and inter-laboratory study. Analytical Science and Technology, 17(2), 153-162.
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Abstract
Dioxin CRM for QA/QC was prepared with fly ash collected from municipal waste incinerator. With that CRM inter-laboratory test was carried out. The collected fly ash was conducted several homogeneity steps including sievings and mixing. Homogeneity test and estimation of uncertainty was performed by one-way ANOVA based on ISO guide 35. Compared concentrations of fly ash of participants to CRM values, PCDDs value was lower than that of CRM in almost participants, and showed higher PCDFs concentration than that of CRM. Although there is a small difference in PCDD/Fs concentrations with congeners of extract, the result was close to mean value.
- keywords
- inter-laboratory test, CRM, PCDD/Fs
Reference
1
ISO Guide 35, 'Certification of reference materials- general and statistical principles',
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