Determination of Selected Polycyclic Aromatic Compounds in Particulate Matter Samples with Low Mass Loading: An Approach to Test Method Accuracy

Table 3

Values of intermediate precision deduced from results of the investigated extraction procedures using dichloromethane as solvent and different mass loadings of PM sample estimations were based on the pooled standard deviations () and standard deviations of the normalized differences () calculations. Last column includes standard deviation obtained in previous work which was calculated as a standard deviation type A (sd/) and obtained from the analysis of four subsamples split from a single sample.

PM mass loading (mg)	5–8 mg				0.7–2.8 mg				5 mg
	RSD pooled				RSD pooled				sd/
	MAE	AG-D	MAE	AG-D	PLE	AG-D	PLE	AG-D
1-MeNa	0.32	0.27	0.52	0.17
2-MeNa	0.24	0.23	0.27	0.35
Phe	0.19	0.14	0.31	0.22	0.36	0.28	0.57	0.45	0.19
An	0.20	0.09	0.28	0.12	0.41	0.18	0.34	0.20
Fl	0.19	0.14	0.31	0.22	0.36	0.28	0.57	0.45	0.19
Pyr	0.20	0.09	0.28	0.12		0.18	0.34	0.20	0.18
BaA	0.07	0.06	0.11	0.08	0.15	0.10	0.05	0.17	0.15
Cry	0.07	0.14	0.11	0.21	0.12	0.08	0.08	0.12	0.16
BbF	0.08	0.06	0.12	0.07	0.15	0.10	0.08	0.16	0.15
BkF	0.09	0.07	0.12	0.09	0.18	0.15	0.08	0.26	0.15
BaP	0.06	0.06	0.09	0.08	0.16	0.12	0.11	0.19	0.33
DBA	0.06	0.06	0.09	0.06	0.16	0.11	0.11	0.17
BghiP	0.21	0.07	0.19	0.03	0.11	0.09	0.02	0.15
3-NPh									0.21
9-NPh	0.08	0.07	0.07	0.08	0.17	0.11	0.22	0.18	0.15
1-NPyr									0.28
3-NFl							0.20	0.57	0.28