and soil/sediment (CRM008–050, 720 ng Hg g 1 pH % OM Control soil ND 4.01–4.27 2.2 ± 0.3
Soil Mine El Alacrán 1.76 ± 0.09 4.18–4.26 2.0 ± 0.2 ND: not detectable, % OM: organic matter content n =3.
), and the percentage of recovery were 98% and 97%, respectively. The detection limit was 14 ng