离子色谱法同时测定大蒜鳞茎中7种无机阴离子含量  

Simultaneous Determination of Seven Inorganic Anions in Garlic Bulb by Ion Chromatography

作　　者：尚云涛 陈奕霖 曹佳蕊 任春雪[3,4] 范宝莉[3,4] 刘晓颖[3,4] 王振英[3,4] SHANG Yun-tao;CHEN Yi-lin;CAO Jia-rui;REN Chun-xue;FAN Bao-li;LIU Xiao-ying;WANG Zhen-ying(Tianjin Key Laboratory of Water Resources and Environment,Tianjin Normal University, Tianjin 300387, China;College of Geography and Environment Science, Tianjin Normal University, Tianjin 300387, China;College of Life Science, Tianjin Normal University, Tianjin 300387, China;Tianjin Key Laboratory of Animal and Plant Resistance, Tianjin Normal University, Tianjin 300387, China)

机构地区：[1]天津师范大学天津市水资源与水环境重点实验室,天津300387 [2]天津师范大学地理与环境科学学院,天津300387 [3]天津师范大学生命科学学院,天津300387 [4]天津师范大学天津市动植物抗性重点实验室,天津300387

出　　处：《中国调味品》2018年第6期123-127,共5页China Condiment

基　　金：天津市农委科技成果转化与推广项目(201302030);天津师范大学应用开发基金项目(52XK1505;043135202-XK1707)

摘　　要：建立了抑制型电导离子色谱法同时分离检测大蒜鳞茎中F^-,Cl^-,NO_3^-,NO_2^-,Br^-,SO_4^(2-)和PO_4^(3-) 7种无机阴离子含量的测定方法。样品经破碎提取后,用C_(18)固相萃取小柱分离净化,以Na_2CO_3和NaHCO_3为淋洗液,Ion Pac AS14离子色谱柱分离,外标法定量。结果显示:7种阴离子在0.1~150mg/L范围内线性关系良好,相关系数r>0.999,检测限为0.02~0.7 mg/L,加标回收率为92%~103%。该方法灵敏度高,重现性好,操作简便,分析效率高,适用于大蒜鳞茎中常规无机阴离子的检测。A method of ion chromatography（IC）with suppressed conductivity detection for the simultaneous determination of F^-,Cl^-,NO3^-,NO2^-,B^-,SO4^2-,PO4^3- anions in garlic bulb is established.The seven anions in samples are extracted and purified by C（18） SPE and separated by an Ion Pac AS14 column with Na2CO3/NaHCO3 as eluent.The linear relations of seven anions are good in the range of 0.1-150 mg/L and the linear correlations are above 0.999.The limits of detection of seven anions are in the range of 0.02-0.7 mg/L,while the recovery rates are in the range of 92%-103%.This method is accurate,reliable,simple and efficient for the simultaneous detection of seven anions in garlic bulb.

关 键 词：离子色谱 大蒜鳞茎 无机阴离子 

分 类 号：TS207.3[轻工技术与工程—食品科学]