Environmental Health

Table 3 Spearman correlations between PM_2.5 and its chemical constituents

From: Association of fine particulate matter and its constituents with hypertension: the modifying effect of dietary patterns

	\({\text{SO}}_4^{2-}\)	\({\text{NO}}_3^{-}\)	\({\text{NH}}_4^{+}\)	BC	OM
PM_2.5	0.95	0.95	0.93	0.94	0.97
\({\text{SO}}_4^{2-}\)		0.95	0.96	0.94	0.95
\({\text{NO}}_3^{-}\)			0.99	0.86	0.91
\({\text{NH}}_4^{+}\)				0.86	0.90
BC					0.98

Abbreviations: PM_2.5, fine particulate matter; \({\text{SO}}_4^{2-}\), sulfate; \({\text{NO}}_3^{-}\), nitrate; \({\text{NH}}_4^{+}\), ammonium; BC, black carbon; OM, organic matter.

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ISSN: 1476-069X

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