Chemical Analysis of Air Particulate Matter Trapped by a Porous Material, Synthesized from Silica Fume and Sodium Alginate

Table 2

Matrix correlation coefficients among concentration of ions and heavy metals for sonicated samples.

	Cl^-	NO2^-	NO3^-	SO4^2-	NH4^+	K	Mn	Fe	Ni	Zn	As	Se	Br	Rb	Sr	Ba
Cl^-	1
NO2^-	0.192	1
NO3^-	0.641	-0.137	1
SO4^2-	-0.774	-0.019	-0.452	1
NH4^+	-0.095	-0.583	0.182	0.190	1
K	-0.088	-0.035	0.086	0.148	0.079	1
Mn	0.231	-0.226	0.070	0.074	0.379	0.062	1
Fe	-0.006	-0.237	0.232	0.076	-0.192	-0.295	0.153	1
Ni	0.316	0.188	0.142	0.238	0.325	0.081	0.659	0.003	1
Zn	0.243	-0.047	0.159	0.146	0.429	-0.115	0.637	0.103	0.822	1
As	0.340	0.013	0.288	0.147	-0.004	-0.217	0.365	0.557	0.605	0.462	1
Se	0.333	0.006	0.288	0.151	-0.035	-0.234	0.356	0.578	0.588	0.448	0.998	1
Br	-0.067	-0.129	0.094	0.177	0.134	0.953	0.153	-0.263	0.079	-0.052	-0.162	-0.171	1
Rb	0.365	-0.083	0.206	0.161	0.273	-0.087	0.550	0.339	0.786	0.661	0.922	0.910	-0.015	1
Sr	-0.016	-0.470	0.300	-0.231	0.282	0.440	-0.008	-0.425	-0.279	-0.244	-0.523	-0.525	0.410	-0.436	1
Ba	0.216	-0.193	0.096	0.273	0.418	-0.007	0.425	-0.047	0.568	0.623	0.534	0.529	0.186	0.705	-0.195	1