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Table 2 Selected major and trace element constituents in sediments from several locations in the LCMS

From: Arsenic species in weathering mine tailings and biogenic solids at the Lava Cap Mine Superfund Site, Nevada City, CA

Analyte Al Fe P S As Ca Mn Sb Cd Cu Hg Ni
Units wt% wt% ppm wt% ppm wt% ppm ppm ppm ppm ppm ppm
Detection Limit 0.005 0.004 10 0.01 2 0.013 0.71 ±5% 0.69 1.4 0.01 0.26
97-LCD1 1 1.79 0.99 50 0.61 1155 0.86 265 38 0.5 67 n.d 13
97-LCD2 1 1.35 2.39 30 2.54 1130 0.71 295 2.4 9.5 9 0.4 11
97-LCD3 1 1.52 2.39 b.d. 2.81 561 0.02 5 1 34.5 45 n.d 11
97-LCD4 1 9.10 6.06 450 2.32 950 3.86 1290 3 0.5 88 0.02 2
LC3 (n = 6) 1 5.13 2.26 b.d. 0.14 1043 3.10 731 16.12 5.17 35 1.01 18
99-LL2-ss1 2 0.97 2.05 400 0.07 1640 1.76 590 n.r. 1.84 36.6 0.03 14
99-LL12-1cs 1 7.10 4.16 70 0.45 1672 2.58 1030 15.2 6 60 0.82 34
99-LL6-cs 1 5.82 3.40 60 0.5 2153 2.73 961 19 8 56 1.91 32
00-LL5-cs 1 6.13 3.03 60 0.15 803 1.48 946 7.4 4 60 1.44 29
99-LL4-ss1 2 0.99 1.78 420 0.07 514 1.68 615 n.r. 2.52 38 0.08 16
99-LL4-ss2 2 0.76 1.54 380 0.07 546 1.77 470 n.r. 1.86 35.4 0.04 13
99-LL10-m 2 0.32 153 1810 0.05 5140 0.39 1040 4.1 0.5 18 b.d. 5
00-LC1-m1 2 0.33 4.05 3650 0.97 8740 2.28 370 1.5 0.86 38.6 0.13 9.2
00-LC1-m3 2 1.93 153 4070 0.36 10,0003 1.9 920 15.3 9.25 485 5.14 43.6
97-BCKGD 4 n.r. n.r. n.r. n.r. 9.86 n.r. n.r. n.r. 2.06 62.8 b.d. 16.2
  1. (ss), core samples (cs), microbial mats (m), and water filtrate (wf). Analytical methods are described in the text. Estimated lower limits of detection 5s method blank values are given for each analyte.1Analysis by ICP-MS for a suite of 40 elements, HGAAS for As, Hg, and Sb, and LECO for S; 2ICP-AES/MS of 32 elements;; 5Analyte value exceeds upper limit of detection. As a conservative estimate, the upper detection limit is reported as the table entry and used in PCA (see text); 4 Analysis by ICP-AES (EPA method 6010).