Table 2.

HR-ICP-MS comparisons

Element	Mean Concentration (pg g−1)		Correlation
	HR-ICP-MS I	HR-ICP-MS II	Monthly	Annual
Ce	2.627	2.661	0.929	0.956
Cd	1.881	1.887	0.977	0.995
Tl	0.158	0.153	0.946	0.990
Pb	59.582	58.720	0.989	0.999