{"id":338128,"date":"2024-10-19T23:39:16","date_gmt":"2024-10-19T23:39:16","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-iso-177802015\/"},"modified":"2024-10-25T22:45:09","modified_gmt":"2024-10-25T22:45:09","slug":"bs-iso-177802015","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-iso-177802015\/","title":{"rendered":"BS ISO 17780:2015"},"content":{"rendered":"
This International Standard specifies a method for the determination of saturated aliphatic hydrocarbons from C10 to C56 of natural origin present in vegetable oils, and for detecting the presence of mineral oil and diesel oil.<\/p>\n
The method is applicable to all types of crude and refined edible oils and fats, for concentrations of mineral oils from 50 mg\/kg to 1 000 mg\/kg.<\/p>\n
A rapid method for refined and virgin (or cold-pressed) oils is proposed in Annex C. This rapid method is not adapted for crude oils due to a lack of retention of triglycerides observed for some samples.<\/p>\n
A method for fat recovery from food samples by soxhlet extraction with a blend of solvents is proposed in Annex D.<\/p>\n
PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
---|---|---|---|---|---|---|---|
6<\/td>\n | Foreword <\/td>\n<\/tr>\n | ||||||
7<\/td>\n | Introduction <\/td>\n<\/tr>\n | ||||||
9<\/td>\n | 1\tScope 2\tNormative references 3\tTerms and definitions <\/td>\n<\/tr>\n | ||||||
10<\/td>\n | 4\tPrinciple 5\tReagents <\/td>\n<\/tr>\n | ||||||
11<\/td>\n | 6\tApparatus <\/td>\n<\/tr>\n | ||||||
12<\/td>\n | 7\tSampling <\/td>\n<\/tr>\n | ||||||
13<\/td>\n | 8\tPreparation of the test sample 9\tProcedure 9.1\tChromatography column preparation 9.1.1\tPreparation of AgNO3 impregnated silica gel 9.1.2\tColumn packing 9.2\tElution of the hydrocarbon fraction <\/td>\n<\/tr>\n | ||||||
14<\/td>\n | 9.3\tGas chromatography 9.3.1\tGas chromatography setup 9.3.2\tWorking conditions for gas chromatography analysis 9.3.3\tPeak identification <\/td>\n<\/tr>\n | ||||||
15<\/td>\n | 9.3.4\tPerformance of the gas chromatography system 9.4\tProcedural blank 9.5\tQuantitative determination <\/td>\n<\/tr>\n | ||||||
19<\/td>\n | 10\tDetermination of hydrocarbons attributed to mineral origin 11\tPrecision 11.1\tInterlaboratory test 11.2\tRepeatability 11.3\tReproducibility 12\tTest report <\/td>\n<\/tr>\n | ||||||
20<\/td>\n | Annex\u00a0A (informative) Examples of chromatograms <\/td>\n<\/tr>\n | ||||||
25<\/td>\n | Annex\u00a0B (informative) Validation of silver nitrate impregnated silica gel purification <\/td>\n<\/tr>\n | ||||||
27<\/td>\n | Annex\u00a0C (informative) Procedure for rapid method <\/td>\n<\/tr>\n | ||||||
31<\/td>\n | Annex\u00a0D (informative) Fat extraction from food sample <\/td>\n<\/tr>\n | ||||||
34<\/td>\n | Annex\u00a0E (informative) Results of interlaboratory trials <\/td>\n<\/tr>\n | ||||||
37<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Animal and vegetable fats and oils. Determination of aliphatic hydrocarbons in vegetable oils<\/b><\/p>\n |