Quality of Commercial Coffees: Heavy Metal and Ash Contents

Table 1

Detection limits (DL) and limits quantification (QL) determined for elements quantified by atomic absorption.

	Cu (mg kg^−1)	Cr (mg kg^−1)	Ni (mg kg^−1)	Cd (mg kg^−1)	Pb (mg kg^−1)	Zn (mg kg^−1)
DL	0.0474	0.3105	0.0414	0.1569	0.1104	0.7262
QL	0.1438	0.9408	0.1559	0.4775	0.3347	2.2007