. 2020 Aug 13;199(6):2420–2428. doi: 10.1007/s12011-020-02332-3

Table 3.

Content of Cd and Pb in dry ground coffee (before brewing), dregs and infusions (n = 23), μg kg⁻¹

	Dry coffee		Dregs		Infusions		Leaching percentages of Cd and Pb
	Cd	Pb	Cd	Pb	Cd	Pb	Cd	Pb
1	5.041^E	73.37^F	0.600^F	10.20^I	4.443^D	63.17^F	88^B	87^A
2	10.33^I	74.37^F	< LOQ^A	6.280^H	10.33^H	68.09^F	100^C	92^{A, B}
3	1.204^A	34.84^B	< LOQ^A	5.134^G	1.203^A	29.71^C	100^C	85^A
4	3.991^D	38.04^{B, C}	< LOQ^A	2.143^C	3.990^D	36.89^{C, D}	100^C	95^B
5	8.883^H	43.47^C	< LOQ^A	1.087^B	8.882^G	42.38^D	100^C	97^B
6	3.289^C	80.06^G	0.702^G	< LOQ^A	2.593^{B, C}	80.06^G	78^A	100^B
7	1.502^A	44.21^C	< LOQ^A	1.120^B	1.502^{A, B}	43.09^D	100^C	97^B
8	2.100^B	33.87^{B, C}	0.100^B	2.549^C	2.000^B	31.32^C	95^{B, C}	92^{A, B}
9	3.411^{C, D}	58.12^{D, E}	0.313^D	< LOQ^A	3.100^C	58.12^{E, F}	91^{B, C}	100^B
10	2.204^B	61.35^E	0.122^B	1.223^B	2.084^B	60.13^F	95^{B, C}	98^B
11	1.273^A	55.41^D	< LOQ^A	3.320^E	1.272^A	52.09^E	100^C	94^{A, B}
12	2.100^B	61.35^E	< LOQ^A	4.581^F	1.994^B	56.77^{E, F}	95^{B, C}	93^{A, B}
13	3.122^C	54.36^D	0.189^C	1.250^B	2.932^C	53.11^E	94^{B, C}	98^B
14	7.703^G	33.35^B	0.133^B	< LOQ^A	7.573^F	33.35^C	98^{B, C}	100^B
15	6.111^F	44.36^C	< LOQ^A	3.561^D	6.110^E	40.80^D	100^C	92^{A, B}
16	1.489^A	55.36^D	0.100^B	3.210^D	1.389^A	52.15^E	93^{B, C}	94^{A, B}
17	2.110^B	21.36^A	0.122^B	1.122^B	1.980^B	20.24^{B, C}	95^{B, C}	95^{A, B}
18	3.311^C	65.12^E	0.191^C	3.220^D	3.122^C	6.900^A	94^{B, C}	95^{A, B}
19	4.089^D	21.22^A	0.210^C	4.558^E	3.881^C	16.66^B	95^{B, C}	78^A
20	2.210^B	35.48^B	< LOQ^A	< LOQ^A	2.200^B	35.48^{C, D}	100^C	100^B
21	3.401^{C, D}	48.22^C	0.103^B	2.010^C	3.321^C	46.21^{D, E}	97^{B, C}	96^B
22	5.824^F	63.22^E	0.222^C	2.011^C	5.602^E	61.21^F	97^{B, C}	97^B
23	4.350^D	38.95^{B, C}	0.484^E	4.123^F	3.874^C	34.83^C	89^B	89^{A, B}

Average values for 3 replications

^{A, B}Means with different superscripts in the same column differs significantly at P < 0.05 by Duncan’s test; LOQ Cd = 0.010 μg kg⁻¹; LOQ Pb = 0.030 μg kg⁻¹