Absolutes and concretes

A concrete is obtained by solvent extraction of a fresh raw material of vegetable origin; an absolute is obtained by ethanol extraction of a concrete, in order to eliminate the waxes.

The analytical services offered by the laboratory Pyrenessences Analyses on absolutes:

Chromatographic profile

Chromatographic profile

Absolutes and concretes are complex mixtures whose composition can be determined by gas chromatography. The chromatographic profile of an absolute presents all the identified molecules.

Physico-chemical measurements (subject to feasibility)

Specific gravity

Ratio between the density of the sample and that of pure water at a given temperature.

Refractive index

Characteristic index of the behavior of light in the sample.

Optical rotation

Property that some samples have to rotate the plane of polarization of the light passing through them – related to the possible presence of chiral molecules.

Flash point

The minimum temperature at which vapors emitted from the sample will deflagrate upon contact with a flame or hot spot – for example, when transporting a material, this measurement may be necessary.

Peroxide value

The peroxide value expresses the amount of oxygen chemically bound to a substance in the form of peroxides and thus makes it possible to evaluate its oxidation state.

Acid value

The acid value expresses the amount of potassium hydroxide required to neutralize the free acids in a sample.

Multi-residue analysis of pesticides

Multi-residue analysis of pesticides

The laboratory offers a multi-residue analysis of pesticides in absolutes.

List of target molecules:

Alachlor

Aldrine

Atrazine

Azinphos Ethyl-

Azinphos Methyl-

Benalaxyl

Bifenthrine

Bitertanols

Bromophos Ethyl-

Bromophos Methyl-

Bromopropylate

Carbofuran

Chlordane cis-

Chlordane trans-

Chlorfenvinphos

Chlorobenzilate

Chlorothalonil

Chlorpropham

Chlorpyriphos Ethyl-

Chlorpyriphos Methyl-

Chlorthal Dimethyl-

Clomazone

Coumaphos

Cyfluthrines

Cyhalothrineλ-

Cypermethrines

DDD o,p’-

DDD p,p’- + DDT o,p’-

DDE o,p’-

DDE p,p’-

DDT p,p’-

Deltamethrines

Diazinon

Dichlofenthion

Dichlofluanide

Diclofop Methyl-

Diethofencarb

Difenoconazols

Diflufenican

Dimethoate

Diphenylamine

Endosulfanα-

Endosulfanβ-

Endosulfan sulfate

Endrine

Ethion

Ethofumesate

Ethoprophos

Etridiazole

Etrimphos

Fenamiphos

Fenarimol

Fenchlorphos

Fenoxycarb

Fenpropathrine

Fenpropimorphe

Fensulfothion

Fenthion

Fenvalerates

Fluazifop p-Butyl-

Flucythrinates

Flusilazole

Flutolanil

Flutriafol

Fonofos

HCH α-

HCH β- + Lindane

HCH δ-

Heptachlore

Heptachlor epoxide

Hexachlorobenzene

Hexaconazole

Iprodione

Malaoxon

Malathion

Mecarbam

Metalaxyl

Metazachlor

Methacrifos

Methidathion

Methiocarb

Methoxychlore

Metolachlor

Mirex

Monalide

Monocrotophos

Myclobutanil

Napropamide

Omethoate

o-Phenylphenol

Oxadiazon

Oxadixyl

Penconazole

Pentachloroaniline

Pentachloroanisole

Permethrines

Phosalone

Phosmet

Piperonyl butoxide

Pirimicarb

Pirimiphos Ethyl-

Pirimiphos Methyl-

Prochloraz

Procymidone

Profenophos

Propiconazols

Propyzamide

Prothiofos

Pyridaben

Pyridaphenthion

Pyrimethanil

Quinalphos

Quizalofop Ethyl-

S421

Sebuthylazine

Tebuconazole

Terbufos

Terbuthylazine

Tetradifon

Tetramethrines

Tolclofos Methyl-

Tolylfluanid

Triadimefon

Triadimenol

Triazophos

Vinclozoline

Search for traces of phthalates

Search for traces of phthalates

Absolutes that have been in contact with certain materials can sometimes contain traces of phthalates, so it may be worth looking for them.

List of target molecules (subject to feasibility):

Di-Methyl-Phthalate DMP

Di-Ethyl-Phthalate DEP

Di-Iso-Butyl-Phthalate DIBP

Di-Butyl-Phthalate DBP

Di-Pentyl-Phthalate DnPP

Butyl-Benzyl-Phthalate BBP

Di-CycloHexyl-Phthalate DCHP

Di-Ethyl-Hexyl-Phthalate DEHP

Di-n-Octyl-Phthalate DnOP

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