气相色谱法检测复混肥料中总氟化物含量  

Determination of Total Fluoride Content in Compound Fertilizers with Gas Chromatography

作　　者：程莎 丁明善 王晖 孙胜男 陈靖 薛东菊 Cheng Sha;Ding Mingshan;Wang Hui;Sun Shengnan;Chen Jing;Xue Dongju(Qingdao Product Quality Testing Research Institute,Qingdao 252000,China;National Center for Quality Supervision and Inspection of Marine Fine Chemicals and Biological Products,Qingdao 252000,China)

机构地区：[1]青岛市产品质量检验研究院,山东青岛252000 [2]国家海洋精细化工及其生物制品质量监督检验中心,山东青岛252000

出　　处：《山东化工》2021年第11期93-94,共2页Shandong Chemical Industry

摘　　要：本文利用气相色谱对复混肥料中总氟化物的检测方法进行了研究。通过中性盐溶液超声提取—冷酸解离—硅烷衍生化一系列前处理后进样分析,采用程序升温,以保留时间外标法定量。氟化物标准溶液在2~25μg/mL之间均具有良好的线性关系,相关系数为0.9996,回收率为98.3%~100.5%,最低定量限为0.3μg/mL,相对标准偏差为0.4%~0.7%。此法灵敏度高、精密度高,且具有良好的重复性和再现性,适于测定复混肥料中的总氟化物含量。A method was investigated to determine the total fluoride with gas chromatography(GC).A series of pre-treatments followed by a series of pre-treatment and sample injection analysis were performed through neutral salt solution ultrasonic extraction,cold acid dissociation,and silane derivatization.The fluoride standard solution had a good linear relationship between2~25μg/mL.The linearity was well with the determination coefficient of 0.9996 and the recoveries ranged from 98.3%to100.5%.The limit of quantifications was 0.3μg/mL,and the relative standard deviation is 0.4%~0.7%.This method has high sensitivity,high precision,good repeatability and reproducibility,and is suitable for the determination of total fluoride content in compound fertilizers.

关 键 词：总氟 气相色谱 复混肥料 检测 

分 类 号：O657.7[理学—分析化学]