摘要
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（江苏石油化工学院应用化学系，常州，２１３０１６）Ｂ．ＷｅｌｚＭ．Ｓｐｅｒｌｉｎｇ（Ｐ－Ｅ有限公司，Ｄ－８８６６２ 于伯林根，德国）关键词铅，葡萄酒，微波消解，流动注射在线预浓集，火焰原子...
A flow-injection on-line preconcentration and seperation procedure for flame-AAS with a microwave digestion system is described for the determination of lead at μg/L levels in wine. The sorbent extraction preconcentration system is a micro-column (50μL) with bonded silica groups C18 as the sorbent and DDC as 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/L were 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%.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1996年第8期1219-1221,共3页
Chemical Journal of Chinese Universities
关键词
铅
葡萄酒
微波消解
流动注射
火焰原子吸收
Lead,Wine, Microwave digestion, Flow injection on-line preconcentration,Flame AAS
