本文描述了以离子选择电极测定硝酸盐含量的方法:置10克打碎混匀的试样于150毫升烧杯中,加70毫升水,于蒸汽浴上加热一小时,偶尔搅动,冷却后,稀释至100毫升。对于大多数产品,如蔬菜,水果及配制品,可取50毫升样液于150毫升烧杯中,加3克银树脂(以20克AgNO_3与50克分析纯阳离子交换树脂混合,用蒸馏水很好地冲洗,经布氏漏斗滤 This article describes the nitrate ion content of the ion-selective electrode method: 10 grams of crushed and mixed sample in a 150 ml beaker, add 70 ml of water, heated on a steam bath for one hour, stirring occasionally, after cooling, diluted To 100 ml. For most products such as vegetables, fruits and preparations, take 50 ml of sample solution in a 150 ml beaker and add 3 g of silver resin (mixed with 50 g of analytical cation exchange resin at 20 g AgNO 3 and rinsed well with distilled water , Filtered through a Buchner funnel