Mercury in Crude Oil Data
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Mercury in Crude Oil

The following compilation is historical. The more recent calculation of the average mercury in US crude oil is calculated here.

Table 1 - THg in Crude Oil by INAA (7)

Source Amount(ppb) SD(ppb) Notes
California 114 2.8 Detection Limit = 4 ppb
California 81 1.9  
California 88 3.0  
California 29,688 103.9 Cymric
California 78 2.4  
Libya 2,079 11.9  
Libya 62 5.1  
Libya 75 1.7  
Louisiana 23 1.8  
Wyoming 77 3.4  
Mean 3,200   Range 23 - 30,000 ppb

Table 2 - THg in Alberta Crude Oils (9)

Strata Number of Samples Number Above DL High (ppb) Low (ppb) Mean* (ppb) Median (ppb) SD Detection Limit (ppb)
Upper Cretaceous 21 11 202 DL 17.6 2.5 46.0 2
Upper Cretaceous 18 7 138 DL 17.1 1 38.1 2
Jurassic 3 0 1 DL 1 1   2
Triassic 4 2 6 DL 6 2.5 2.4 2
Carboniferous 8 4 19 DL 5 1.5 6.3 2
Devonian 36 13 399 DL 36 1 92.5 2
Total 86 38 399 DL 21.9 1 63.6  

* calculated assuming < DL = 1 ppb

Table 3 - THg in Crude Oil and Gas Condensates

Reference Type Number of Samples Range (ppb) THg (ppb) mean SD Detection Limit (ppb)
Musa (12) Crude Oil 7 0.1 - 12 3 4.2 2
Liang (13) Crude Oil 11 1 - 7 4 1  
Bloom (14) Crude Oil 76 NR* 1,505 3,278 All
Bloom (14) Crude Oil 39 NR 1.2 1.5 Lowest 39 samples
Bloom (14) Crude Oil 37 NR 3,009 4,140 Highest 37 samples
Tao (15) Crude Oil 1   <1   Asia
Olsen (16) Condensate 4 NR 15    
Bloom (14) Condensate 18 NR 3,964 11,665 Lowest 8 samples
Bloom (14) Condensate 8 NR 7,113 15,240 Highest 10 samples
Bloom (14) Condensate 10 NR 3,009 4,140 Highest 37 samples
Shafawi (17) Condensate 5 9 - 63 30 18.6 S.E. Asia
Tao (15) Condensate 7 15 - 173 40   Asian

* NR - not reported

Table 4 - Recent THg in Crude Oil Data

Reference Type Number of Samples Range (ppb) Mean THg (ppb) SD Detection Limit (ppb)
Magaw (18) Crude Oil 2   <10   Middle east
Magaw (18) Crude Oil 4   <10   Africa
Magaw (18) Crude Oil 11 ND - 1,560 146   North America
1,560 Cymric
Magaw (18) Crude Oil 4   <10   Asia
Magaw (18) Crude Oil 4   <10   South America
Magaw (18) Crude Oil 1   <10   North Sea
             
Morris (19) Crude Oil 7 1.0 -3.2 1.7   Africa
Morris (19) Crude Oil 2 2.4 - 5.7 4.3   Middle East
Morris (19) Crude Oil 1 1.9 1.9   Canada
Morris (19) Crude Oil 4 2.5 - 9.3 5.0   North Sea
Morris (19) Crude Oil 2 0.1 - 2.7 1.4   Mexico
Morris (19) Crude Oil 6 0.8 - 12.3 5.2   South America
Morris (19) Crude Oil 1 3.1 3.1   Mixed
             
EC (20) Crude Oil 11   <15   U.S.
EC (20) Crude Oil 2   <15   Canada
EC (20) Crude Oil 2   <15   Mexico
EC (20) Crude Oil 3   <15   South America
EC (20) Crude Oil 2   <15   North Sea
             
Duo (21) Crude Oil 8 <2 - 9 1.6   Canadian Imports


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