Board Specimen ID Wood Core As (mg/kg) Wood Core Cr (mg/kg) Wood Core Cu (mg/kg)  
C-AA C-AA-BL2 2250 2381 1570  
C-AA C-AA-BL5 1509 1698 1273  
C-AA C-AA-X1 3271 3271 1935  
C-AA C-AA-X2 1713 1862 1291  
  N 4 4 4  
  Average 2185.7 2302.8 1517.3  
  Std. Dev 787.9 707.9 309.9  
  RSD 36.0% 30.7% 20.4%  
C-AC C-AC-BL2 2079 2165 1270  
C-AC C-AC-BL5 2493 2742 1745  
C-AC C-AC-X1 2320 2467 1557  
C-AC C-AC-X2 1314 1314 814  
  N 4 4 4  
  Average 2051.2 2171.9 1346.4  
  Std. Dev 520.2 618.7 405.0  
  RSD 25.4% 28.5% 30.1%  
C-AD C-AD-BL2 1460 1413 880  
C-AD C-AD-BL4 1956 2000 1296  
C-AD C-AD-BL6 1791 1838 1140  
C-AD C-AD-X1 1716 1665 984  
  N 4 4 4  
  Average 1730.6 1729.0 1075.2  
  Std. Dev 206.5 250.8 182.0  
  RSD 11.9% 14.5% 16.9%  
C-AE C-AE-BL2 2187 2153 1245  
C-AE C-AE-BL5 1594 1670 987  
C-AE C-AE-X1 3434 3148 21179  
  N 3 3 3  
  Average 2405.2 2323.8 7803.6  
  Std. Dev 939.4 753.8 11584.3  
  RSD 39.1% 32.4% 148.4%  
C-AH C-AH-BL2 1534 1534 869  
C-AH C-AH-BL5 1680 1786 1040  
C-AH C-AH-X1 1640 1594 970  
C-AH C-AH-X2 1333 1333 889  
  N 4 4 4  
  Average 1546.6 1561.7 941.9  
  Std. Dev 155.1 186.6 78.4  
  RSD 10.0% 12.0% 8.3%  
C-AI C-AI-BL2 2710 2710 1675  
C-AI C-AI-BL5 3045 3322 1938  
C-AI C-AI-X1 2195 2097 1209  
  N 3 3 3  
  Average 2650.3 2709.7 1607.3  
  Std. Dev 428.2 612.8 369.4  
  RSD 16.2% 22.6% 23.0%  
C-AK C-AK-BL2 66 96 57  
C-AK C-AK-BL5 235 258 162  
C-AK C-AK-X1 537 537 312  
C-AK C-AK-X2 65 103 76  
  N 4 4 4  
  Average 225.6 248.5 151.7  
  Std. Dev 222.2 206.2 116.2  
  RSD 98.5% 83.0% 76.6%  
C-AM C-AM-BL2 2313 2351 1251  
C-AM C-AM-BL5 2819 2789 1703  
C-AM C-AM-X1 2590 2622 1548  
C-AM C-AM-X2 2600 2627 1608  
  N 4 4 4  
  Average 2580.4 2597.1 1527.5  
  Std. Dev 207.0 181.5 194.8  
  RSD 8.0% 7.0% 12.8%  
C-AN C-AN-BL2 454 476 340  
C-AN C-AN-BL5 1379 1379 805  
C-AN C-AN-X1 466 517 336  
C-AN C-AN-X2 1198 1174 681  
  N 4 4 4  
  Average 874.1 886.8 540.6  
  Std. Dev 484.3 458.3 239.0  
  RSD 55.4% 51.7% 44.2%  
C-AP C-AP-BL2 2605 2865 1928  
C-AP C-AP-BL5 1995 2126 1339  
C-AP C-AP-X1 2144 2144 1423  
C-AP C-AP-X2 3478 3478 2137  
  N 4 4 4  
  Average 2555.5 2653.5 1706.5  
  Std. Dev 667.7 648.8 387.1  
  RSD 26.1% 24.5% 22.7%  
C-AS C-AS-BL2 739 739 514  
C-AS C-AS-BL5 2690 2733 1649  
C-AS C-AS-X1 2422 2338 1420  
C-AS C-AS-X2 110 173 102  
  N 4 4 4  
  Average 1490.2 1495.9 921.2  
  Std. Dev 1261.6 1233.2 733.4  
  RSD 84.7% 82.4% 79.6%  
C-BE C-BE-BL2 3154 2867 1749  
C-BE C-BE-BL5 2932 2868 1753  
C-BE C-BE-X1 2578 2451 1496  
C-BE C-BE-X2 2475 2413 1454  
  N 4 4 4  
  Average 2784.7 2649.8 1612.9  
  Std. Dev 314.3 251.9 160.1  
  RSD 11.3% 9.5% 9.9%  
C-BI C-BI-BL1 1199 1074 599  
C-BI C-BI-BL4 1360 1332 777  
  N 2 2 2  
  Average 1279.4 1203.1 688.3  
  Std. Dev 114.0 182.6 125.7  
  RSD 8.9% 15.2% 18.3%  
C-BJ C-BJ-BL2 2304 2270 1355  
C-BJ C-BJ-BL5 2595 2565 1740  
C-BJ C-BJ-X1 1215 1152 685  
  N 3 3 3  
  Average 2037.8 1995.6 1260.2  
  Std. Dev 727.8 745.1 534.0  
  RSD 35.7% 37.3% 42.4%  
C-BL C-BL-BL1 3822 3503 2166  
C-BL C-BL-BL4 3448 3448 2146  
C-BL C-BL-X1 2620 2714 1778  
C-BL C-BL-X2 2741 2985 1828  
  N 4 4 4  
  Average 3157.9 3162.5 1979.2  
  Std. Dev 573.8 378.9 204.9  
  RSD 18.2% 12.0% 10.4%  
C-BM C-BM-BL4 172 195 118  
C-BM C-BM-BL7 2806 2806 1888  
C-BM C-BM-X1 1413 1354 795  
  N 3 3 3  
  Average 1463.8 1451.8 933.4  
  Std. Dev 1317.7 1308.3 893.2  
  RSD 90.0% 90.1% 95.7%  
C-BN C-BN-BL2 2544 2602 1648  
  N 1 1 1  
  Average 2544.1 2544.1 2544.1  
  Std. Dev - - -  
  RSD - - -  
C-BO C-BO-BL1 2288 2179 1308  
C-BO C-BO-BL4 1560 1560 887  
C-BO C-BO-X1 632 599 333  
C-BO C-BO-X2 1595 1616 1028  
  N 4 4 4  
  Average 1518.7 1488.4 888.8  
  Std. Dev 679.7 655.8 410.0  
  RSD 44.8% 44.1% 46.1%  
C-BP C-BP-BL2 3189 3479 2175  
C-BP C-BP-BL5 1857 1770 1102  
C-BP C-BP-X1 2765 2995 1889  
  N 3 3 3  
  Average 2603.7 2748.1 1722.1  
  Std. Dev 680.8 881.2 555.3  
  RSD 26.1% 32.1% 32.2%  
C-BR C-BR-BL2 1309 1261 727  
C-BR C-BR-X1 1389 1343 764  
C-BR C-BR-X2 1598 1538 939  
  N 3 3 3  
  Average 1431.9 1380.3 809.9  
  Std. Dev 149.1 142.4 113.0  
  RSD 10.4% 10.3% 13.9%  
C-BT C-BT-BL2 1386 1367 831  
  N 1 1 1  
  Average 1385.8 1385.8 1385.8  
  Std. Dev - - -  
  RSD - - -  
C-BU C-BU-BL2 2770 3001 1682  
C-BU C-BU-X1 2313 2517 1599  
C-BU C-BU-X2 3482 3868 2321  
  N 3 3 3  
  Average 2855.0 3128.9 1867.3  
  Std. Dev 588.9 684.7 395.2  
  RSD 20.6% 21.9% 21.2%  
C-BW C-BW-BL2 658 658 400  
C-BW C-BW-X1 233 233 177  
C-BW C-BW-X2 795 823 466  
  N 3 3 3  
  Average 562.0 571.1 347.5  
  Std. Dev 293.5 304.6 151.6  
  RSD 52.2% 53.3% 43.6%  
C-BX C-BX-BL2 995 995 676  
C-BX C-BX-BL5 3239 3239 2068  
C-BX C-BX-X1 2879 2879 1859  
C-BX C-BX-X2 2094 2126 1276  
  N 4 4 4  
  Average 2301.4 2309.6 1469.8  
  Std. Dev 993.6 991.5 626.1  
  RSD 43.2% 42.9% 42.6%  
C-BY C-BY-BL2 2296 2296 1571  
C-BY C-BY-X1 2118 2330 1652  
C-BY C-BY-X2 3109 3109 2148  
  N 3 3 3  
  Average 2507.9 2578.5 1790.5  
  Std. Dev 528.2 459.8 312.3  
  RSD 21.1% 17.8% 17.4%  
C-BZ C-BZ-BL2 1213 1244 698  
C-BZ C-BZ-BL4 1593 2108 1218  
C-BZ C-BZ-BL7 1780 1755 1017  
C-BZ C-BZ-X1 787 838 457  
  N 4 4 4  
  Average 1343.2 1486.0 847.4  
  Std. Dev 439.5 559.1 337.1  
  RSD 32.7% 37.6% 39.8%  
C-CA C-CA-BL2 3439 3439 2157  
C-CA C-CA-X1 3571 3571 2143  
C-CA C-CA-X2 2504 2664 1652  
  N 3 3 3  
  Average 3171.3 3224.6 1983.8  
  Std. Dev 581.7 490.2 287.8  
  RSD 18.3% 15.2% 14.5%  
C-CC C-CC-BL2 1427 1379 809  
C-CC C-CC-X1 1445 1334 806  
  N 2 2 2  
  Average 1435.9 1356.5 807.2  
  Std. Dev 12.7 32.2 2.0  
  RSD 0.9% 2.4% 0.2%  
C-CD C-CD-BL2 1672 1616 947  
C-CD C-CD-BL4 1508 1485 835  
C-CD C-CD-M1 0 0 0  
C-CD C-CD-X1 1596 1550 902  
  N 4 4 4  
  Average 1194.1 1162.8 671.2  
  Std. Dev 798.9 777.0 449.8  
  RSD 66.9% 66.8% 67.0%  
C-CE C-CE-BL2 2734 2734 1722  
C-CE C-CE-X1 2117 2117 1319  
  N 2 2 2  
  Average 2425.5 2425.5 1520.8  
  Std. Dev 435.9 435.9 284.8  
  RSD 18.0% 18.0% 18.7%  
C-E C-E-BL2 4362 4362 2114  
C-E C-E-BL4 2084 1940 1222  
C-E C-E-X1 2392 2195 1548  
  N 3 3 3  
  Average 2946.3 2832.7 1627.9  
  Std. Dev 1236.1 1330.9 451.5  
  RSD 42.0% 47.0% 27.7%  
C-N C-N-BL2 2516 2410 1404  
C-N C-N-BL4 3592 3633 2327  
C-N C-N-X1 2857 2857 1766  
  N 3 3 3  
  Average 2988.3 2966.6 1832.1  
  Std. Dev 549.8 618.7 465.0  
  RSD 18.4% 20.9% 25.4%  
C-S C-S-BL2 3915 3781 2046  
C-S C-S-BL5 3986 3941 2373  
C-S C-S-X1 2180 2600 1797  
C-S C-S-X2 4624 4624 2477  
  N 4 4 4  
  Average 3675.9 3736.5 2173.5  
  Std. Dev 1047.1 840.9 310.8  
  RSD 28.5% 22.5% 14.3%  
ALL C Boards
  N 107 107 107  
  Average 2074.2 2095.8 1465.0  
  Std. Dev 990.1 997.4 2016.1  
  RSD 48.9% 48.8% 138.6%  
  Min 65 96 57  
  Max 4624 4624 21179