Chemical analyses
Our purpose is to offer leading services that quickly and correctly classify, identify, analyze, and measure samples
| Parameter | Object/matrix | Method/principle |
| Micro- and macro elements
(Ag, Al, As, Au, Ba, Be, Ca, Cd, Co, Cr, Cu, Eu, Fe, Hg, K, Li, Mg, Mn, Na, Ni, Pb, Pd, Pt, Re, Sb, Se, Ti, Zn, V) |
Water, foodstuffs, drinks, supplements, animal feed | Atomic absorption spectroscopy (AAS) |
| B-group vitamins (B1, B3, B6, B9)
B-group vitamins (B12) |
Solid and liquid foodstuffs and supplements | Capillary electrophoresis /liquid chromatography |
| Phenolic compounds (flavonoids, anthocyanins, phenolic acids) | Solid and liquid foodstuffs and supplements | Capillary electrophoresis /liquid chromatography |
| Sugars (myo-inositol (vitamin B8), sorbitol, raffinose, sucrose, lactose, galactose, glycose, fructose and others) | Solid and liquid foodstuffs and supplements | Capillary electrophoresis /liquid chromatography |
| Antioxidative properties | Solid and liquid foodstuffs and supplements | ORAC method (ORAC – Oxygen radical absorbance capacity), spectrophotometry |
| Kinin | Drinks | Fluorimetry |
| Ions (Cl-, NO3-, SO42-, PO43, HCO3-, NH4+, K+, Na+, Ca2+, Mg2+) | Water | Capillary electrophoresis /liquid chromatography |
| pH, Cl-, Br-, I- | Potentiometry |
| Parameter | Method/principle |
| Dry matter (moisture) | Gravimetry |
| Ash, mineral content (combustion at 525°C or 900°C) | Gravimetry |
| Elements C, H, N, S + O | Element analyzer |
| Micro- and macro elements in biomass and products
(Ag, Al, As, Au, Ba, Be, Ca, Cd, Co, Cr, Cu, Eu, Fe, Hg, K, Li, Mg, Mn, Na, Ni, Pb, Pd, Pt, Re, Sb, Se, Ti, Zn, V) |
AASF, AASG, AASCV |
| Extractives (TAPPI 204) (fatty and resin acids, sterols, triglycerides, terpenes etc.), which are soluble in water, acetone, ethanol, ethanol-toluene mixture (ASTM D1106-97), THF, etc. | Soxhlet extraction + gravimetry |
| Structural carbohydrates (cellulose and hemicellulose sugars – total amount and separately 5-HMF, fucose, cellobiose, galactose, glycose, mannose, arabinose, xylose) | Acid hydrolysis + capillary electrophoresis/liquid chromatography – refractive index detection (HPLC-RID) (NREL/TP-510-42618) |
| Lignin (total lignin, acid soluble lignin, acid insoluble lignin) | Klason method – gravimetry + spectrophotometry |
| Lignin (total lignin) | CASA (Cysteine – Assisted Sulfuric Acid) method, spectrophotometry |
| Monolignols content in lignin (S/G/H units) | Thioacidolysis + Gas chromatography – mass-spectrometry (GC-MS) |
| Determination of functional groups – acid-, hydroxyl- (aliphatic, aromatic, carboxylic acid), acetyl-, methoxy groups | Fourier Transform Infrared Spectroscopy (FTIR)
Nuclear Magnetic Resonance Spectroscopy (NMR) |
| Macromolecular properties of biopolymers – molecular mass distribution (Mn, Mw) and dispersion (PDI) | Size exclusion chromatography (SEC) |
| Structural characterization of organic compounds
|
Fourier Transform Infrared Spectroscopy (FTIR)
Nuclear Magnetic Resonance Spectroscopy (NMR) |
| Characterization of natural materials and composites by X-ray diffraction analysis (XRD) and Scanning Electron Microscopy (SEM) | X-ray diffraction (XRD), Scanning Electron Microscopy (SEM) |
| Solubility of lignin
|
Gravimetry |
| Parameter | Object/matrix | Method/principle |
| Micro- and macro elements
(Ag, Al, As, Au, Ba, Be, Ca, Cd, Co, Cr, Cu, Eu, Fe, Hg, K, Li, Mg, Mn, Na, Ni, Pb, Pd, Pt, Re, Sb, Se, Ti, Zn, V) |
Blood, serum, plasma, urine, hair | Atomic absorption spectroscopy (AASF, AASG) |
| β-lactam antibiotics (ceftazidime, cefepime, ampicillin, piperacillin, meropenem, imipenem, amoxycillin) | Blood plasma | Liquid chromatography – mass-spectrometry (HPLC-MS) |
| Parameter | Object/sample matrix | Method/principle |
| Cannabinoids:
Δ9THC, THCA, CBD, CBDA, CBN, CBG, CBGA, CBC, CBDV, CBDVA |
Hemp plant material
Hemp concentrates Tinctures Topicals Edibles |
Liquid chromatography – mass-spectrometry (HPLC-DAD-MS) |
| Residual solvents:
1,2-Dichloroethane Benzene Chloroform Ethylene Oxide Methylene Chloride Trichloroethylene Acetone Acetonitrile Butane, All isomers Ethanol Ethyl Acetate Ethyl Ether Heptane Hexane, All isomers Isopropanol Methanol Pentane, All isomers Propane Toluene Total Xylenes |
Hemp concentrates
Hemp Infused Edibles Tinctures Topicals
|
Gas chromatography – mass-spectrometry (GC-MS) |
| Pesticides | Hemp Infused Edibles
Hemp concentrates Tinctures Topicals
|
Gas chromatography – mass-spectrometry (GC-MS/MS)
Liquid chromatography – mass-spectrometry (HPLC-DAD-MS/MS) |
| Terpenes:
(-)-α-Bisabolol Camphene Δ-3-Carene β-Caryophyllene Geraniol (-)-Guaiol α-Humulene p-cymene (-)-Isopulegol d-Limonene Linalool β-Myrcene cis-Nerolidol trans-Nerolidol α-Ocimene β-Ocimene α-Pinene (-)-β-Pinene α-Terpinene γ-Terpinene Terpinolene Caryophyllene oxide Eucalyptol |
Hemp plant material
Hemp concentrates Tinctures Topicals
|
Gas chromatography – mass-spectrometry (GC-MS) |
| Heavy Metals:
Arsenic Cadmium Lead Nickel Copper Total Chromium Mercury |
All Hemp Goods | Atomic Absorption Spectroscopy with graphite furnace (AASG)
Cold Vapor Atomic Absorption Spectroscopy |
| Parameter | Object/matrix | Method/standard |
| Micro- and macro elements
(Ag, Al, As, Au, Ba, Be, Ca, Cd, Co, Cr, Cu, Eu, Fe, Hg, K, Li, Mg, Mn, Na, Ni, Pb, Pd, Pt, Re, Sb, Se, Ti, Zn, V) |
Steel, copper, chromium, platinum, other alloys and technical materials | Atomic absorption spectroscopy (AASF, AASG) |
| Elements C, H, N, S + O | Different matrixes | Element analyzer |
| Water soluble chlorides | Concrete additives | EN 480-10 |
| Alkalinity | EN 480-12 | |
| Total chlorine | Dyes | EVS-EN 12878:2014 |
| Water soluble chlorides | EVS-EN ISO 787-13:2011 | |
| Water soluble material | EVS-EN ISO 787-3:2001 | |
| Mass loss | EVS-EN 12878:2014 | |
| Chlorides | Paper | ISO 9197 |
| Sulphates | ISO 9198 | |
| pH | ISO 6588-1 |
Samples of drinking or surface water are taken in a clean glass or plastic bottle that has been previously rinsed three to four times with the same water. The sample quantity is maximum of 0.5 liters.
Food samples are taken in a clean glass or plastic container. The minimum amount of sample required for analysis is 3-5 grams or 5-10 ml.
An order form for the analysis of natural samples, foods, and technical objects can be downloaded here.
Blood and serum are taken in a medical laboratory (e.g. family doctor’s laboratories). Whole blood (5mL) is taken in tubes with heparin (green cap), and serum (1-2 mL) – in tubes without additives.
Morning urine (20-25 mL) is taken in tubes purchased in a pharmacy.
The hair 0.1-0.2 g is taken up to 3 cm from the scalp and placed in an envelope or plastic bag.
An order form for the analysis of biological samples can be downloaded here.
Samples with the order form have to be delivered to the TalTech Department of Chemistry and Biotechnology (Akadeemia tee 15, Tallinn). Digitally signed ordering letter has to be emailed.
