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当前位置: 首页 > 文章 > 离子色谱法测定碳酸盐及磷酸盐中四种无机阴离子 食品科学 2016,37 (14) 169-173
Position: Home > Articles > Determination of Four Inorganic Anions in Carbonates and Phosphates by Ion Chromatography FOOD SCIENCE 2016,37 (14) 169-173

离子色谱法测定碳酸盐及磷酸盐中四种无机阴离子

作  者：
韩婷婷;崔鹤;段小娟;宋田;姬泓巍;李慧新;蔡峰;朱倩林
单  位：
青岛出入境检验检疫局;山东出入境检验检疫局检验检疫技术中心;燕山大学理学院;中国海洋大学化学化工学院
关键词：
离子色谱法;碳酸盐;磷酸盐;无机阴离子
摘  要：
建立离子色谱等度分离测定碳酸盐及磷酸盐中F~-、Cl~-、SO_4~(2-)、NO_3~(-4)种无机阴离子的方法,碳酸盐试样用20 mmol/L氢氧化钠溶液溶解,加磷酸中和至p H 4.5~5.5;磷酸盐试样直接用20 mmol/L氢氧化钠溶液溶解。色谱柱采用AS11-HC分离柱,流动相20 mmol/L氢氧化钠溶液,流速1.0 m L/min。结果表明:F~-、Cl~-、SO_4~(2-)、NO_3~(-4)种阴离子质量浓度与峰面积呈良好线性关系(r=0.999 2~0.999 9),检出限分别为2.0、2.0、2.5、2.5 mg/kg,在低、中、高3个加标水平下的平均回收率为80%~109.88%,相对标准偏差为0.85%~4.67%(n=6)。该方法准确、简便、灵敏、通用、重复性好,可用于碳酸盐及磷酸盐中4种阴离子的实际检测。
译  名：
Determination of Four Inorganic Anions in Carbonates and Phosphates by Ion Chromatography
作  者：
HAN Tingting;CUI He;DUAN Xiaojuan;SONG Tian;JI Hongwei;LI Huixin;CAI Feng;ZHU Qianlin;College of Chemistry and Chemical Engineering, Ocean University of China;Shandong Entry-Exit Inspection and Quarantine Technology Center;Qingdao Entry-Exit Inspection and Quarantine Bureau;College of Science, Yanshan University;
关键词：
ion chromatography;;carbonate;;phosphate;;inorganic anion
摘  要：
An analytical method using ion chromatography with isocratic elution was developed for the determination of four inorganic anions(F~-, Cl~-, SO_4~(2-) and NO_3~-) in carbonates and phosphates. Carbonate samples were dissolved in 20 mmol/L sodium hydroxide solution and then neutralized to p H between 4.5 and 5.5 with phosphoric acid. Phosphate samples were dissolved with 20 mmol/L sodium hydroxide solution directly and then separated on an AS11-HC column with 20 mmol/L sodium hydroxide solution as the mobile phase at 1.0 m L/min flow rate. The results indicated that the calibration curves showed good linear relationship for 4 inorganic anions(r = 0.999 2–0.999 9). The limits of detection(LODs) for F~-, Cl~-, SO_4~(2-) and NO_3~- were 2.0, 2.0, 2.5 and 2.5 mg/kg respectively. The mean recoveries at three spiked concentration levels(low, middle, and high) were 80%–109.88%, and the relative standard derivations(RSDs) were 0.85%–4.67%(n = 6). The proposed method is reliable, simple, convenient, sensitive, universal and reproducible, and can be applied in the rapid determination of 4 anions in carbonates and phosphates.

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