標(biāo)準(zhǔn)號：DIN EN 12014-4-2005
中文標(biāo)準(zhǔn)名稱：食品.硝酸鹽和/或亞硝酸鹽含量測定.第4部分:肉制品中硝酸鹽和/或亞硝酸鹽含量的離子交換色譜法
英文標(biāo)準(zhǔn)名稱：Foodstuffs - Determination of nitrate and/or nitrite content - Part 4: Ion-exchange chromatographic (IC) method for the determination of nitrate and nitrite content of meat products; German version EN 12014-4:2005
標(biāo)準(zhǔn)類型：X04
發(fā)布日期：1999/12/31 12:00:00
實(shí)施日期：1999/12/31 12:00:00
中國標(biāo)準(zhǔn)分類號：X04
國際標(biāo)準(zhǔn)分類號：67.120.10
適用范圍：This European Standard specifies an ion-exchange chromatographic method for the determination of the nitrate and nitrite contents of meat products and has been validated for different meat products with a nitrate content of 50 mg/kg to 300 mg/kg as nitrate ion and a nitrite content of approximately 40 mg/kg as nitrite ion. Validation data obtained from interlaboratory studies show that this method may also be applied to the determination of nitrate in vegetables and baby food. Furthermore, the method may be applied for the determination of nitrite in meat products having a nitrite content greater than 40 mg/kg. Nitrate and nitrite are extracted from the test sample with hot water. The aqueous solution is treated with acetonitrile to remove any interfering substance. The nitrate and nitrite contents of the solution are then determined by ion-exchange chromatography (IC) and ultraviolet (UV) detection at a wavelength of 205 nm.#,,#