ISO 14597-1997 石油产品 钒和镍含量的测定 波长色散X-射线荧光光谱法

标准号：ISO 14597-1997
中文标准名称：石油产品 钒和镍含量的测定 波长色散X-射线荧光光谱法
英文标准名称：Petroleum products - Determination of vanadium and nickel content - Wavelength-dispersive X-ray fluorescence spectrometry
标准类型：E31
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：E31
国际标准分类号：75.080
适用范围：This International Standard specifies a method for the determination of vanadium and nickel in liquid petroleum products. It may also be applied to semi-solid and solid petroleum products that are either liquefied by moderate heating or completely soluble in the specified organic solvent mixture. The method is applicable to products having vanadium contents in the range 5 mg/kg to 1 000 mg/kg, and nickel contents in the range 5 mg/kg to 100 mg/kg, although precision data have only been determined up to 100 mg/kg for vanadium and 60 mg/kg for nickel; higher contents may be determined by appropriate dilution. Barium at concentrations above approximately 300 mg/kg interferes with the determination of vanadium, and iron at concentrations above approximately 500 mg/kg interferes with the determination of nickel. Other elements at concentrations above approximately 500 mg/kg may affect precision and accuracy due to spectral line overlap or absorption.