In vitro toxicity of particulate matter (PM) collected at different sites in the Netherlands is associated with PM composition, size fraction and oxidative potential - the RAPTES project

Table 2 Chemical composition of coarse particulate matter (PM) collected at the selected sampling days

Coarse PM		Trace metals						Soluble inorganic compounds				Organic compounds
(2.5-10 μm)		(ng/μg PM)						(μg/μg PM)				(μg/μg PM)		(pg/μg PM)
Site	Sampling day	Al	Cu	Fe	Ni	V	Zn	NH ₄ ⁺	Cl ^-	NO ₃ ^-	SO ₄ ^2-	EC	OC	PAH
Steelworks	16-Jul-2007	2.2	0.07	11	0.03	0.16	0.30	0.01	0.02	0.05	0.02	0.05	0.16	34
Harbor	13-Dec-2007	0.82	0.30	6.1	0.02	0.03	-	0.02	0.00	0.05	0.02	0.01	0.16	1.1
Continuous traffic	12-Jul-2007	3.8	1.1	33	0.07	0.03	0.78	0.01	0.02	0.10	0.02	0.24	0.13	4.9
Truck traffic	26-Jul-2007	2.1	2.3	43	0.04	0.03	0.90	0.01	0.02	0.04	0.01	0.04	0.13	8.1
Stop & Go traffic	24-Jan-2008	12	0.30	16	0.05	0.06	0.05	0.01	0.04	0.03	0.03	0.00	0.03	6.4
Underground	26-Sep-2007	2.3	27	305	0.27	0.13	12	0.00	0.00	0.00	0.00	0.09	0.03	29

Data of the urban background and farm site was not available due to equipment failure on the sampling days chosen for the in vitro toxicity testing. Values of trace metals represent the total of the soluble and insoluble metal fraction. PAH, polycyclic aromatic hydrocarbon, represents the total of 18 PAHs: naphthalene, acenaphthalene, acenaphthene, fluorine, phenanthrene, anthracene, fluoranthene, pyrene, benzo(a)anthracene, chrysene, benzo(b)fluoranthene, benzo(k)fluoranthene, benzo(e)pyrene, benzo(a)pyrene, indeno(1,2,3-cd)pyrene, dibenz(a, h)anthracene, benzo(ghi)perylene, and coronene. EC, elemental carbon; OC, organic carbon. - below detection limit