Analytical Services 2017-07-21T15:02:19+00:00

The sample size requirements provided below are guidelines, and will alter with the concentration of the analyte of interest.

Sample Type Storage & Shipping Information
Liquid Samples
δ13C- DIC

Dissolved inorganic carbon

Samples should be submitted in 40 mL glass septa vials with no headspace. Provide sample duplicates when available. For best results, limit light and air exposure, and keep refrigerated.
14C- DIC

Dissolved inorganic carbon by AMS

Samples should be submitted in 1 L glass bottles with no headspace. For best results, limit light and air exposure and keep refrigerated
δ 13C- DOC

Dissolved organic carbon

Samples should be submitted in 40 mL glass vials with no headspace. For best results, limit light and air exposure and keep refrigerated
δ34S-SO4 and/or δ18O-SO4

Sulfates in aqueous samples

Provide 250 to 500 mL of sample water in an appropriately sized bottle (*). Please provide sulfate concentration data when available.

* Volume required is dependent on concentration

δ 15N- NO3 and/or δ18O-NO3

Nitrates in aqueous samples

Provide between 500 mL to 2 L of sample water (*). For best results, store frozen and limit light exposure. Please provide, nitrate, sulfate, and chloride concentration data when available.

* Volume required is dependent on concentration

δ δ2H- H2O and/or δ18O- H2O

Hydrogen and/or oxygen of water samples

Provide 20 mL of sample water in a glass container with no headspace
 3H – H2O

Tritium of water samples

(direct, enriched by electrolysis, and ultra-low level)

Direct: 100 mL

Enriched: 300 to 500 mL

Ultra: 500 mL to 1 L

δ37Cl Dissolved chloride Provide between 100 to 500 mL of sample water (*). Please provide chloride concentration data with sample submission.

* Volume required is dependent on concentration

δ81Br Dissolved bromide Provide 500 mL of sample water (*). Please provide bromide concentration data with sample submission.

* Volume required is dependent on concentration

87Sr Dissolved strontium Provide 500 mL to 1 L of sample water (*). Please provide strontium concentration data with sample submission.

* Volume required is dependent on concentration

234U-238U230Th & 232Th (α) Contact us 
234U-238U230Th & 232Th (TIMS) Contact us 
226Ra (TIMS) Contact us 
137Cs (ϒ) Contact us 
210Pb (α) Contact us 
Solid Samples
δ13C and/or δ15N

%C and/or %N

Carbon and/or nitrogen of organic solids

Provide at least 100 mg of ground and homogenized sample in an appropriately sized vial.

Pre-weighed samples should be weighed into tin cups, and sent in 96-well trays with a sample list and weights. Please provide replicate samples where available.

Filter paper samples may also be submitted. Please provide replicate samples where available.

δ13C and δ18O of carbonates Apatite & dolomite Provide at least 100 mg of ground and homogenized sample in an appropriately sized vial or small container.
δ34S-SO4 and/or δ18O-SO4

Sulfates in solid samples

Provide at least 100 mg of clean and dry barium sulfate powder in an appropriately sized vial.
δ34S-S2

Sulfides in solid samples

Provide at least 100 mg of ground and homogenized sample in an appropriately sized vial or container.
δ18O – AgNO3 Provide at least 100 mg of clean and dry AgNO3 sample in an appropriately sized vial or container.
δ37Cl Solid materials (i.e. salts, rocks) Contact us 
δ81Br Solid materials (i.e. salts, rocks) Contact us 
87Sr/86Sr Solid materials (i.e. minerals, biological samples) Contact us 
234U-238U230Th & 232Th Carbonates, Silicates (α) Contact us 
234U-238U230Th & 232Th Carbonates (TIMS) Contact us 
Organic Samples
δ2H and/or δ13Hydrocarbon gases (e.g. Methane, Ethane, Propane) Contact us 
δ2H and/or δ13BTEX (benzene, toluene, ethylbenzene, and xylenes) and chlorinated solvents Contact us 
δ37Cl Chlorinated solvents (TCE, PCE, DCE, DCA, VC) Contact us 
δ2H and/or δ13Bulk hydrocarbon gases (on the EA) Contact us 
Special Samples
NO3 Concentrations Contact us 
SO4 Concentrations Contact us 
Cl, Br, Sr Concentrations Contact us 
Alkalinity Contact us 
AgCl Precipitation Contact us 
Toluene distillation of water samples for (δ18O or δ2H)  Contact us