標準號：BS EN 15470-2007
中文標準名稱：液化石油氣.溶解殘留物的測定.高溫氣相色譜法
英文標準名稱：Liquefied petroleum gases - Determination of dissolved residues - High temperature gas chromatographic method
標準類型：E31
發布日期：2007/12/31 12:00:00
實施日期：2007/12/31 12:00:00
中國標準分類號：E31
國際標準分類號：75.160.20
引用標準：EN ISO 4257
適用范圍：This European Standard specifies a method for determining the dissolved residual matter in liquefiedpetroleum gases (LPG), in the range of 40 mg/kg to 100 mg/kg. Higher concentrations can be determined byadjusting the sample size.The dissolved residue is the amount of organic compounds that are detectable by gas chromatography afterevaporation of the sample at ambient temperature and then in an oven at 105 °C.This method is not suitable for detecting solid materials or for possibly high molecular weight polymers(> 1 000 g/mol).The advantages of this method are that a small quantity of LPG (50 g to 75 g) is required and the qualitativedata available may indicate the origin of the residues (gas-oil, lubricants, plasticizers, etc.).This method has been developed as a potential replacement of the commonly used method described inEN ISO 13757 [1], but is safer and more environmentally friendly. In addition, this new method is moreaccurate.The precision data of the method have been determined from 20 mg/kg to 100 mg/kg. For a higher content ofresidue, the precision has not been tested, but remains of lesser interest as typical specifications are in therange of 20 mg/kg to 100 mg/kg.NOTE An alternative European Standard, EN 15471 [2], specifies a gravimetric method, which has the same scopeand slightly worst fidelity data.WARNING — Use of this method involves hazardous materials and operations. It is the responsibilityof the user to establish appropriate safety and health precautions. All handling must be performed in afume hood.