Laboratory and Field Testing of an Automated Atmospheric Particle-Bound Reactive Oxygen Species Sampling-Analysis System

Table 5

Summary of the Pearson correlation coefficients.

	D 10–50	D 50–100	D 100–500	BC	Delta-C	O3	SO2	CO	PM2.5	Temp	RH
ROS	−0.15	−0.24	−0.33	−0.30	−0.18	0.21	−0.09	−0.29	−0.28	0.28	−0.31
D 10–50	—	0.46	0.26	0.20	0.27	−0.19	0.41	0.33	0.66	−0.05	0.07
D 50–100	—	—	0.59	0.49	0.50	−0.28	0.35	0.52	0.72	−0.20	0.23
D 100–500	—	—	—	0.53	0.52	0.03	0.22	0.65	0.85	0.01	0.04
BC	—	—	—	—	0.36	−0.72	0.20	0.61	0.32	−0.75	0.74
Delta-C	—	—	—	—	—	−0.53	−0.04	0.70	0.16	−0.39	0.38
O3	—	—	—	—	—	—	−0.09	−0.28	−0.21	−0.89	−0.88
SO2	—	—	—	—	—	—	—	0.03	0.74	0.03	−0.03
CO	—	—	—	—	—	—	—	—	0.40	−0.22	0.28
PM2.5	—	—	—	—	—	—	—	—	—	0.06	−0.05
Temp	—	—	—	—	—	—	—	—	—	—	−0.98

(i) 𝐷_10-50, 𝐷_50-100, and 𝐷_100-500 indicate number concentrations of particles in the size range of 10–50 nm, 50–100 nm and 100–500 nm [25], respectively.
(ii) BC and Delta-C indicate the Aethelometer measurement of particles in the 880 nm wavelength and the difference between 370 nm and 880 nm [26], respectively.
(iii) Temp and RH indicate ambient temperature and relative humidity, respectively.