收藏我们   ENGLISH  
论文查询
范围:  
提 交
《化学分析计量》 2021年第03期
DOI:10.3969/j.issn.1008-6145.2021.03.009
柱后衍生-液相色谱法测定食品接触纸制品中六价铬
陈山丹,钱志娟,李柏,冯杰,刘萍
南京海关轻工产品与儿童用品检测中心,江苏扬州 225009 
Determination of hexavalent chromium in food contact paper products by liquid chromatography with post-column derivation
Chen Shandan, Qian Zhijuan, Li Bai, Feng Jie, Liu Ping
Nanjing Customs District Light Industry Products and Children's Products Inspection Center, Yangzhou 225009, China 
摘要:建立柱后衍生-液相色谱法测定食品接触纸制品中六价铬残留量的方法。试样用磷酸盐缓冲液萃取后 进行过滤,以硝酸铵为流动相,经过AS 7 阴离子交换柱进行分离,分离后的六价铬与衍生试剂(1,5-二苯碳酰二肼)在酸性条件下进行衍生化反应,采用紫外检测器在540 nm 处进行检测。六价铬质量浓度在5~500 μg/L 的范围内与色谱峰面积线性关系良好,相关系数大于0.999,方法检出限为0.91 μg/L。样品加标回收率为87.3%~96.1%,测定结果的相对标准偏差为4.14%~8.48%(n=7)。该方法选择性高,重复性好,设备简单,能满足食品接触纸制品中六价铬含量的测试要求。 
Abstract:A method for the determination of hexavalent chromium in food contact paper products by liquid chromatography with post-column derivatization was established. The samples were extracted with phosphate buffer and then filtered, separated by AS 7 anion exchange column with ammonium nitrate as mobile phase. The separated hexavalent chromium was derivatized with derivative reagent (1,5-diphenylcarbazide) under acidic condition, and detected at 540 nm by UV detector. The mass concentration of hexavalent chromium had good linear relations with the chromatographic peak area in the range of 5-500 μg/L, the correlation coefficient was more than 0.999. The detection limit was 0.91 μg/L. The recoveries were 87.3%-96.1%, and the relative standard deviations of determination results were 4.14%-8.48% (n=7). The method has the advantages of high selectivity, good repeatability and simple equipment, which can meet the requirements of determination of hexavalent chromium in food contact paper products. 
关键词:液相色谱;柱后衍生;食品接触纸制品;六价铬 
Keywords:liquid chromatography; post-column derivation; food contact paper products; hexavalent chromium 
基金:南京海关科研项目(2019KJ26) 
本文引用格式:
陈山丹,钱志娟,李柏,等. 柱后衍生- 液相色谱法测定食品接触纸制品中六价铬[J]. 化学分析计量,2021,30(3):37. 

全文:
相似文章:
  高效液相色谱-波长切换法同时测定独一味软胶囊中6种成分
2021年第02期
  超高效液相色谱法测定环境空气中13 种醛酮类化合物
2021年第02期
  高效液相色谱法同时测定混合炸药中RDX 与FOX-7
2021年第02期
  高效液相色谱法测定着色剂食品黄3 中6 种磺酸类杂质
2021年第02期
  高效液相色谱荧光检测法测定药物中的氯乙酰氯
2021年第01期
  高效液相色谱法测定洗手液中水杨酸和对氯间二甲苯酚
2021年第01期
  高效液相色谱-串联质谱内标法测定动物源性食品中玉米赤霉烯酮及其代谢产物
2021年第01期
  高通量高效液相色谱法快速检测西红花中15种非法添加色素
2021年第01期
  高效液相色谱-串联质谱法测定鲜活小龙虾中孔雀石绿不确定度评定
2020年第06期
  超高效液相色谱-串联质谱法同时测定蔬菜中12种杀菌剂
2020年第06期
《化学分析计量》杂志社 版权所有,未经授权禁止复制或者建立镜像
地址:山东省济南市天桥区田庄东路3号 邮编:250031
电话:0531-85878132 85878148 85878224 85878278 传真:0531-85947355
鲁ICP备05018524号-6