Particle and Fibre Toxicology

Table 1 Exposure characteristics for studies in spontaneously hypertensive rats exposed to concentrated ambient particulate matter

From: Response of spontaneously hypertensive rats to inhalation of fine and ultrafine particles from traffic: experimental controlled study

Exposure		fCAP (Site I = Bilthoven)					u+fCAP (Site II = HIA)
Date		6-1-03	13-1-03	20-1-03	27-1-03	11-2-03	8-7-03	29-9-03	6-10-03	13-10-03	4-10-04	6-10-04	11-10-04	13-10-04
Mass¹⁾	μg/m³	1067.5	456.5	399.0	609.5	3613.0	269.0	409.0	366.5	379.0	501.2	448.2	555.8	534.7
Diameter²⁾	μm	0.65	0.74	0.71	0.75	0.71	0.68	0.72	0.75	0.67	1.09	1.41	0.58	1.08
gsd²⁾		1.14	1.34	1.35	1.30	1.17	1.32	1.33	1.56	1.35	0.21	0.28	0.25	0.22
Number counts²⁾							320,000	470,000	66,000	45,000	998,750	1,310,320	1,624,000	1,282,000
Compounds³⁾
SO₄ ^2-	μg/m³	240	86	63	98	908	19	27	25	17	14	28	26	41
NO₃ ^-	μg/m³	349	86	66	112	860	16	37	16	37	33	50	33	53
NH₄ ⁺	μg/m³	194	53	40	68	684	8	18	10	22	9	17	11	25
Cl^-	μg/m³	22	51	42	96	65	38	33	45	35	1	1	1	1
Gases⁴⁾
O₃	μg/m³	22	16	22	22	10	nm	nm	nm	nm	10	0	0	0
CO	μg/m³	32	42	32	31	48	nm	nm	nm	nm	39	40	41	37
SO₂	μg/m³	40	42	36	26	12	nm	nm	nm	nm	6	14	14	13
NO	μg/m³	6	5	5	5	6	nm	nm	nm	nm	28	32	50	27
NO₂	μg/m³	9	11	9	9	21	nm	nm	nm	nm	17	19	15	17
NO_x	μg/m³	10	12	9	9	13	nm	nm	nm	nm	41	45	55	41

Experiments A-E concentrated PM in size range of 0.15–2.5 μm, F-N in size range <2.5μm including PM<0.15 μm. fCAP, fine concentrated ambient particulate matter; u+fCAP, ultrafine plus fine concentrated ambient particulate matter
1) Time-integrated 2-day mean mass concentrations at the outlet of the particle concentrator
2) Diameter, gsd (geometric standard deviation) and number are measured by an aerodynamic particle sizer which measures only particles larger than 0.5 μm. Results are based on numbers
3) Chemical analyses (ion chromatography) of filter used for mass concentration
4) nm, not measured

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ISSN: 1743-8977

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