Oils of lemon and petitgrain citronnier, and oil of lime obtained by a mechanical process — Determin...
The method consists in analyzing a small quantity of essential oil on a column of small diameter but great length under specified conditions. The citral content is determined by using the internal standard method. Polyethylene glycol 20000 is used as stationary phase. Operating temperatures: Oven: linear temperature programming from 80 to 180 °C at a rate of 2 °C/min. Injection system: about 190…
Oil of rosewood — Determination of alpha-terpineol content — Gas chromatographic method on packed co...
A small quantity of the oil is analyzed by gas chromatography under specified conditions on a packed column. The
alpha
-terpineol content is determined by using the internal standard method. Operating temperatures: Oven: isotherm between 120 and 150 °C. Injection system: about 170 °C. Detector: about 170 °C.
Ethanol for industrial use — Methods of test — Part 3: Estimation of content of carbonyl compounds p...
The method is applicable to products having carbonyl compounds contents between 0.00025 % (m/m) and 0.01 % (m/m). The principle is based on reaction in acid medium of the carbonyl compounds in a test portion with 2,4-dinitrophenylhydrazine. Formation of the corresponding 2,4-dinitrophenylhydrazones which, after making the solution alkaline, take on a red coloration. Photometric measurement of…
Ethanol for industrial use — Methods of test — Part 7: Determination of methanol content (methanol c...
The principle is based on the conversion of methanol present in a test portion to formaldehyde by oxidation. The oxidation is carried out with a solution of potassium permanganate in phosphoric acid. Reaction of the formaldehyde formed with chromotropic acid (4,5-dihydroxynaphthalene-2,7-disulphonic acid). Photometric measurement of the violet coloration obtained at a wavelength of about 570 nm…
Ergonomics of the thermal environment — Evaluation of thermal environments in vehicles — Part 1: Pri...
ISO 14505-1:2007 gives guidelines for the assessment of thermal stress inside vehicles used for land, sea and air operation. It offers information about the assessment of hot, cold as well as moderate thermal environments by referring to different methods, as specified in International Standards, and specifying the constraints and necessary adjustments needed for the special case of vehicle…
Natural capital accounting for organizations — Principles, requirements and guidance
This standard provides specifications and guidance for the process of preparing natural capital accounts. Natural capital accounting is a systematic way of collating financial, socio-economic and environmental information about an organization’s impacts and dependencies on nature and presenting it in formats that are familiar to decision makers. Such accounts enable organizations to see all the…
Guidelines for treated wastewater use for irrigation projects — Part 7: Golf courses and other sport...
The level of water stress (freshwater withdrawal as a proportion of available freshwater resources) is steadily increasing worldwide. A single use of water is increasingly perceived as an underutilization of a valuable resource and as an environmentally unsustainable practice. Population growth is driving an increasing competition for freshwater between agriculture and urban areas, as well as…
