Determination of Interesting Toxicological Elements in PM_2.5 by Neutron and Photon Activation Analysis

Table 6

Correlation coefficients for the trend of concentrations of analyzed elements present in PM_2.5.

As	Au	Ba	Br	Ce	Co	Cr	Cs	Fe	Hf	Hg	La	Mo	Rb	Sb	Sc	Se	Sm	Th	W	Zn
	0.25	−0.80	0.85	0.37	0.85	0.65	0.50	0.80	0.51	−0.35	0.70	0.50	0.39	0.83	0.40	0.80	0.55	0.20	−0.19	0.37	As
		−0.97	0.58	0.51	0.35	0.06	0.54	0.33	0.73	0.35	0.01	0.10	0.77	0.48	0.01	0.56	0.08	−0.32	−0.19	0.16	Au
			−0.97	−1.00	−0.98	−0.95	−0.89	−0.65	−1.00	−0.43	−0.81	−0.91	−1.00	−0.99	0.62	−0.94	−0.98	−0.98	−0.11	−0.65	Ba
				0.61	0.87	0.54	0.57	0.83	0.86	−0.22	0.57	0.23	0.68	0.95	0.35	0.89	0.50	0.16	−0.17	0.58	Br
					0.51	0.39	0.29	0.46	0.59	0.15	0.41	0.15	0.77	0.64	0.05	0.66	0.10	−0.32	−0.14	0.50	Ce
						0.69	0.53	0.81	0.63	−0.22	0.72	0.24	0.78	0.90	0.35	0.86	0.53	0.25	0.10	0.60	Co
							0.09	0.67	−0.13	−0.34	0.66	0.43	0.45	0.61	0.29	0.71	0.45	0.04	−0.24	0.44	Cr
								0.44	0.83	0.15	0.47	0.19	0.72	0.60	0.13	0.43	0.19	0.18	−0.20	0.05	Cs
									0.39	−0.38	0.73	0.14	0.57	0.85	0.65	0.79	0.72	0.27	−0.29	0.50	Fe
										0.56	0.13	0.48	−0.05	0.82	0.26	0.73	0.46	0.26	0.01	0.55	Hf
											−0.34	−0.16	0.22	−0.17	−0.41	−0.21	−0.40	−0.37	−0.03	−0.04	Hg
												0.30	0.49	0.64	0.42	0.60	0.55	0.41	−0.15	0.26	La
													0.36	0.27	−0.07	0.40	0.12	−0.31	−0.21	0.03	Mo
														0.79	−0.34	0.76	−0.29	−0.57	−0.02	0.37	Rb
															0.41	0.87	0.53	0.15	−0.13	0.68	Sb
																0.24	0.89	0.47	−0.11	0.44	Sc
																	0.44	−0.06	−0.28	0.53	Se
																		0.39	−0.09	0.50	Sm
																			0.24	0.17	Th
																				0.07	W
																					Zn