高等学校化学学报 ›› 1996, Vol. 17 ›› Issue (8): 1219.

• 研究简报 • 上一篇    下一篇

流动注射在线预浓集-火焰原子吸收光谱法测定葡萄酒中微量铅

孙晓娟1, B. Welz M. Sperling2   

  1. 1. 江苏石油化工学院应用化学系, 常州 213016;
    2. P-E有限公司, D-88662于伯林根, 德国
  • 收稿日期:1995-07-20 出版日期:1996-08-24 发布日期:1996-08-24
  • 通讯作者: 孙晓娟,女,53岁,副教授.
  • 作者简介:孙晓娟,女,53岁,副教授.

Determination of Lead in Wine by the FIAS-FAAS Combination On-line Preconcentration System

SUN Xiao-Juan1, B. Welz M. Sperling2   

  1. 1. Jiangsu Institute of Petrochemical Technology, Changzhou 213016;
    2. Department of Applied Research, Bodenseewerk Perkin-Elmer GmbH, D-88662, Ueberlingen, Germany
  • Received:1995-07-20 Online:1996-08-24 Published:1996-08-24

关键词: 铅, 葡萄酒, 微波消解, 流动注射在线预浓集, 火焰原子吸收

Abstract: Aflow-injection on-line preconcentration and seperation procedure for flame-AASwith a microwave digestion system is described for the determination of lead at μg/Llevels in wine.The sorbent extraction preconcentration system is a micro-column (50μL) with bonded silica groups C18 as the sorbent and DDCas the complexing agent.The wine samples were digested using hydrogen peroxide as a digestion oxidizer in the microwave digestion system.An enrichment factor of 100 and a detection limit (3σ) of 3.0μg/Lwere thereby obtained.The sample throughput was 33/h for a sample loading time of 90 s with RSD 1.8 %(n=11).The recoveries of lead added in wine were 95%~103%.

Key words: Lead, Wine, Microwave digestion, Flow injection on-line preconcentration, Flame AAS

TrendMD: