Table 6.

Evaluation of mass concentrations estimated with the DC1700 with reference to those measured with the SMPS and APS. Based on DC1700 particle concentrations less than 106 particles/cm³

Aerosol	Data Pairs	Slope ± Std. Error	Intercept ± Std. Error (μg/m3)	r	R2	% Bias
0.9% Salt	21	0.9 ± 0.041,2	14 ± 7.0	0.991	0.98	4.01,2
5% Salt	21	0.8 ± 0.05	21 ± 7.0	0.991	0.98	7.01,2
Arizona Road Dust	18	1.2 ± 0.04	10 ± 26	0.981	0.98	−18
Diesel Fume	21	1.1 ± 0.051,2	−51 ± 23	0.95	0.91	−38
Welding Fume	18	0.9 ± 0.071,2	71 ± 67	0.981	0.95	−3.01,2

¹meets EPA criterion

²meets NOISH criterion