Tagasi

EVS-EN ISO 12966-2:2011

Animal and vegetable fats and oils - Gas chromatography of fatty acid methyl esters - Part 2: Preparation of methyl esters of fatty acids (ISO 12966-2:2011)

Üldinfo
Kehtetu alates 16.05.2017
Alusdokumendid
ISO 12966-2:2011; EN ISO 12966-2:2011
Direktiivid või määrused
puuduvad
Standardi ajalugu
Staatus
Kuupäev
Tüüp
Nimetus
16.05.2017
Põhitekst
03.03.2011
Põhitekst
Põhitekst
EVS-EN ISO 5509:2000
This part of ISO 12966 specifies methods of preparing the methyl esters of fatty acids. It includes methods for preparing fatty acid methyl esters from animal and vegetable fats and oils, fatty acids and soaps. To cover different requirements four methylation methods are specified, namely: a) a “rapid” transmethylation procedure under alkaline conditions; b) a “general” transmethylation/methylation procedure under sequential alkaline and acid conditions; c) a BF3 transmethylation procedure; d) an alternative procedure using acid-catalysed transmethylation of glycerides. Methyl esters so produced are used in various analytical procedures requiring such derivatives, e.g. gas-liquid chromatography (GLC), thin-layer chromatography (TLC), and infrared spectrometry (IR).
*
*
*
PDF
14,00 € koos KM-ga
Paber
14,00 € koos KM-ga
Hind: 2,40 € koos KM-ga
Standardi monitooring
Teised on ostnud veel
Põhitekst

EVS-EN ISO 12966-3:2010

Animal and vegetable fats and oils - Gas chromatography of fatty acid methyl esters - Part 3: Preparation of methyl esters using trimethylsulfonium hydroxide (TMSH)
Kehtetu alates 05.07.2016
Põhitekst

EVS-ISO 15705:2004

Vee kvaliteet - Keemilise hapnikutarbe indeksi (ST-COD) määramine - suletud katseklaasi meetod madalas mõõtepiirkonnas
Uusim versioon Kehtiv alates 04.06.2004
Põhitekst

EVS-EN ISO 3405:2011

Petroleum products - Determination of distillation characteristics at atmospheric pressure (ISO 3405:2011)
Kehtetu alates 15.05.2019
Põhitekst

EVS-EN 12821:2009

Foodstuffs - Determination of vitamin D by high performance liquid chromatography - Measurement of cholecalciferol (D3) and ergocalciferol (D2)
Uusim versioon Kehtiv alates 04.06.2009