Media Codes

Quantitative
Media Code Element(s) Desired Service
21 dissolved gases - all concentrations of  N2, O2, CH4, CO, CO2, C1-C5 dissolved in water
40 C ppmC of toc/doc (concentrations) in FRESH water & tic/dic SAL & FRESH
56 NCHS %NCHS - Elemental concentrations of solids or liquids
57 NCS %NCS - Elemental concentrations of solids or liquids
58 NC %NC - Elemental concentrations of solids or liquids
59 O %O - Elemental concentrations of solids or liquids
67 C ppmC of toc/doc (concentrations) in SALINE water
132 gas mixture - all concentrations of He, H2, N2, O2, CH4, CO, CO2, C1-C5, in a gas
135 gas mixture - N2O concentration of N2O in a gas mixture

 

Carbonate Isotopes
Media Code Element(s) Desired Service
45 C &/or O Isotopes of calcite
46 C &/or O Isotopes of dolomite/ankerite (specify in comments)
47 C &/or O Isotopes of siderite
48 C &/or O Isotopes of magnesite
49 C &/or O Isotopes of other mineral (specify in comments)

 

Hydrogen Isotopes
Media Code Element(s) Service desired
1 H & O Isotopes of "fresh" water (salinity less than 3PSU)
4 H - only Isotopes of "saline" or contaminated water (salinity greater than 3PSU)
6 H & O Isotopes of "saline" or contaminated water (salinity greater than 3PSU)
12 H Isotopes of dissolved methane gas (pure or in a mix)
14 H Isotopes of dissolved ethane gas (pure or in a mix)
16 H Isotopes of dissolved propane gas (pure or in a mix)
30 H - only Isotopes of organic solids (bulk analysis)
33 H - only Isotopes of organic solids (exchange method)
34 H Isotopes of organic liquids (GC)
82 H - only Isotopes of inorganic solids
102 H - only Isotopes of pure hydrogen gas
123 H - only Isotopes of methane gas
125 H - only Isotopes of ethane gas
127 H - only Isotopes of propane gas
Carbon Isotopes
Media Code Element(s) Desired Service
11 C Isotopes of dissolved methane gas
13 C Isotopes of dissolved ethane gas
15 C Isotopes of dissolved propane gas
19 C - only Isotopes of dissolved CO2 (other than tictoc / dicdoc)
22 C - only Isotopes of organic solids
23 C & N Isotopes of organic solids
28 C - only Isotopes of organic liquids
29 C & N Isotopes of organic liquids
41 C toc/doc isotopes of fresh waters (< 12 PSU)
42 C tic/dic isotopes of fresh or saline waters
44 C Isotopes of inorganic solids (graphite)
68 C toc/doc isotopes of saline waters (> 12 PSU)
69 C toc/doc isotopes of enriched saline waters (> 12 PSU)
100 C & O Isotopes of CO2 in air
120 C & O Isotopes of pure CO2 in break seals
121 C Isotopes of CO2 (low concentrations; gc/pre-con)
122 C Isotopes of methane gas
124 C Isotopes of ethane gas
126 C Isotopes of propane gas

 

Nitrogen Isotopes
Media Code Element(s) Service Desired
23 C & N Isotopes of organic solids  EA)
50 N - only Isotopes of organic solids (EA)
51 N - only Isotopes of compound specific organic liquids (GC)
52 N - only Isotopes of inorganic solids or liquids (EA)
53 N - only

Isotopes of organic liquids (EA)

101 N Isotopes of N2 gas
131 Ar & N & O Isotopes of gaseous air (gasbench)
Oxygen Isotopes
Media Code Element(s) Service Desired
1 H & O Isotopes of fresh (less than 3PSU) waters (LGR)
5 O-only Isotopes of saline or contaminated waters (gasbench)
6 H & O Isotopes of saline or contaminated waters (gasbench)
32 O Isotopes of organic solids (EA)
81 O Isotopes of inorganic solids (excludes silicates)
86 O (18O & 17O) Isotopes of dissolved oxygen (gasbench)
100 C & O Isotopes of CO2 in air (gasbench)
120 C & O Isotopes of CO2 (in break seals)
131 Ar & N & O Isotopes of gaseous air (gasbench)

 

Sulphur Isotopes
Media Code Element(s) Service Desired
60 S Isotopes of sulphides (EA)
61 S Isotopes of inorganic S in whole rock or sediment
63 S Isotopes of organic S in solids (EA)
70 S Isotopes of sulphates (EA)
103 S Isotopes of SO2 gas

 

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