液相色谱串联质谱法测定白菜中的甲醛含量
发布时间：2018-11-22 07:57
【摘要】：文中使用2,4-二硝基苯肼衍生法使白菜中甲醛生成甲醛-2,4-二硝基苯腙,再使用乙腈提取富集甲醛-2,4-二硝基苯腙(衍生物),后经液相色谱串联质谱对其浓度进行检测。结果显示,该法中甲醛的检出限为3.06μg/kg,当白菜中甲醛添加含量在1~18 mg/kg时,甲醛线性良好(r2=0.994)。对白菜中3种浓度(0.5、1、5 mg/kg)甲醛添加进行6次平行回收实验,结果表明,3种浓度平行添加回收率在102%~105%,相对标准偏差为3%~8%,回收稳定,精密度良好。
[Abstract]:In this paper, formaldehyde in Chinese cabbage was derived from formaldehyde to formaldehyde-4- dinitrophenylhydrazide, then acetonitrile was used to extract and enrich formaldehyde-2n-4- dinitrophenylhydrazone (derivative), and its concentration was determined by liquid chromatography-tandem mass spectrometry (LC-MS). The results showed that the detection limit of formaldehyde in this method was 3.06 渭 g / kg, and the linearity of formaldehyde was good when the content of formaldehyde in Chinese cabbage was 1 ~ (18) mg/kg (r _ 2 ~ (2 +) _ (0.994). Six parallel recovery experiments were carried out on three different concentrations of formaldehyde (0.5 ~ 1 mg/kg) in Chinese cabbage. The results showed that the recovery rate of three concentrations of formaldehyde was 102 ~ 105 and the relative standard deviation was 3 ~ 8. The recovery was stable. Good precision.
【作者单位】： 深圳市农产品质量安全检验检测中心;深圳职业技术学院应用化学与生物技术学院;
【基金】：现代农业产业技术体系建设专项资金项目(CARS-33-20)
【分类号】：O657.63;TS255.7
[Abstract]:In this paper, formaldehyde in Chinese cabbage was derived from formaldehyde to formaldehyde-4- dinitrophenylhydrazide, then acetonitrile was used to extract and enrich formaldehyde-2n-4- dinitrophenylhydrazone (derivative), and its concentration was determined by liquid chromatography-tandem mass spectrometry (LC-MS). The results showed that the detection limit of formaldehyde in this method was 3.06 渭 g / kg, and the linearity of formaldehyde was good when the content of formaldehyde in Chinese cabbage was 1 ~ (18) mg/kg (r _ 2 ~ (2 +) _ (0.994). Six parallel recovery experiments were carried out on three different concentrations of formaldehyde (0.5 ~ 1 mg/kg) in Chinese cabbage. The results showed that the recovery rate of three concentrations of formaldehyde was 102 ~ 105 and the relative standard deviation was 3 ~ 8. The recovery was stable. Good precision.
【作者单位】： 深圳市农产品质量安全检验检测中心;深圳职业技术学院应用化学与生物技术学院;
【基金】：现代农业产业技术体系建设专项资金项目(CARS-33-20)
【分类号】：O657.63;TS255.7
【相似文献】
相关期刊论文 前10条
1 黄文魁;;2,4-二硝基苯肼与某些叔醇的反应[J];科学通报;1957年01期
2 周乐;;2,4-二硝基苯肼的纯化[J];化学试剂;1987年03期
3 孙华利;;2,4-二硝基苯肼中微量杂质的气相色谱分析[J];化学试剂;1989年05期
4 戴自钦,谢金伦,万琳;花粉、水果及蔬菜中V_c的测定研究[J];云南大学学报(自然科学版);1993年02期
5 付彩霞;黄玉玲;高宗华;赵静;;2,4-二硝基苯肼与牛血清白蛋白的相互作用[J];光谱实验室;2013年02期
6 冯艳丽;牟翠翠;付正茹;陈颖军;;涂布2,4-二硝基苯肼的环形溶蚀器/滤膜系统和高效液相色谱法检测大气中二羰基化合物[J];分析化学;2011年11期
7 胡s，
本文编号：2348596
本文链接：https://www.wllwen.com/kejilunwen/huaxue/2348596.html
教材专著
