梯度淋洗离子色谱法同时测定西兰花中6种无机阴离子  

Simultaneous Determination of Six Inorganic Anions in Broccoli by Gradient Elution Ion Chromatography

作　　者：高健 范宝莉[1] 亢原彬[1] 李煜[2] 李玉梅 尚云涛 GAO Jian;FAN Baoli;KANG Yuanbin;LI Yu;LI Yumei;SHANG Yuntao(Tianjin Normal University,Tianjin 300387,China;Southwest Forestry University,Kunming,Yunnan 650224,China;Tianjin Bohai Wangya Paint Co.,Ltd,Tianjin 301735,China)

机构地区：[1]天津师范大学,天津300387 [2]西南林业大学,昆明650224 [3]天津渤海望亚涂料有限公司,天津301735

出　　处：《中国无机分析化学》2022年第1期150-154,共5页Chinese Journal of Inorganic Analytical Chemistry

摘　　要：构建一种利用梯度淋洗离子色谱技术分析西兰花中Cl^(-)、Br^(-)、NO_(2)^(-)、NO_(3)^(-)、PO_(4)^(3-)和SO_(4)^(2-)6种无机阴离子含量的方法。梯度淋洗色谱离子体系为DIONEX Ion Pac AS11-HC(4 mm×250 mm)色谱柱,流速1.0 mL/min,抑制器电流80 mA,KOH淋洗液梯度淋洗。6种阴离子线性相关系数0.9995~0.9999,相对标准偏差(RSD)<2.5%,加标回收率95.7%~104%。用于检测西兰花中无机阴离子的方法灵敏度高、回收率高、可以适用于西兰花中6种阴离子精确定量分析。A quantitative method of Cl^(-),Br^(-),NO_(2)^(-),NO_(3)^(-),PO_(4)^(3-)and SO_(4)^(2-) anion in broccoli by gradient elution ion chromatography was established in this work.The gradient elution steps using ion chromatography were as follow:DIONEX Ion Pac AS11-HC(4 mm×250 mm),the flow rate at 1.0 mL/min,the suppressor current at 80 mA,KOH gradient elution.The determination coefficients of the linear equations for six anions were in the range of 0.9995—0.9999 with RSD less than 2.5%,and the recoveries of spiked samples ranged from 95.7%—104%.This method has high precision and recovery,and it provides a reliable detection method for determination of six anions in broccoli.

关 键 词：离子色谱 梯度淋洗 西兰花 无机阴离子 

分 类 号：O657.75[理学—分析化学] TH833[理学—化学]