首页> 中文期刊> 《食品研究与开发》 >离子迁移谱快速测定食品中熏蒸剂溴甲烷

离子迁移谱快速测定食品中熏蒸剂溴甲烷

         

摘要

建立离子迁移谱快速检测食品中熏蒸剂溴甲烷的方法。对样品前处理和检测仪器进行了参数优化后,在顶空条件下,提取溶剂为饱和氯化钠水溶液,离子迁移谱为负离子模式,载气高纯空气,进样口温度60℃,检测器温度45℃,柱温40℃,漂流气流量250 mL/min,载气流量2 mL/min的条件下,溴甲烷的检出限(LOQ)为0.05 mg/kg;10次平行测量的相对标准偏差RSD<8.0%,单个样品的分析周期小于10 min。%A method was developed for rapid determination of fumigant methyl bromide in foods by ion mobility spectrometry. The condition of the sample pretreatment and the detection instrument were optimized:headspace mode;the extraction solvent was saturated sodium chloride solution;ion mobility spectrometry was carried in-negative ion mode;high pure air was used as carrier gas;the inlet temperature was set at 60 ℃;the detector temperature was set at 45℃;the column temperature was set at 40℃;drifting gas flow was 250 mL/min;carrier gas flow was 2 mL/min.The detection limit of methyl bromide (LOQ) was 0.05 mg/kg;the relative standard de-viation of RSD<8.0%(n=10);the Individual samples analysis period was less than 10 min.

著录项

相似文献

  • 中文文献
  • 外文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号