环境样品中痕量铅的流动注射在线分离及分光光度检测(英文)

查看全文 作　　者：TOMIOKA [1,2]Kenichi;OGUMA [1,2]Koichi;SEKI [1,2]Tatsuya

机构地区：[1]日本千叶大学工业部,日本千叶263-8522;[2]尼桑化学工业有限公司化学研究实验室,日本船桥274-8507

出　　处：《环境化学》索引2003年第22卷第3期,共4页

摘　　要：A flow injection method has been developed for the determination of lead in environmental samples by use of on line preconcentration on a Pb·Spec TM column and spectrophotometric detection. The lead in sample solutions was adsorbed selectively on the column from 1mol·l -1 nitric acid and the retained lead was eluted with 0 1mol·l -1 ammonium oxalate.4 (2 pyridylazo)resorcinol (PAR) was used as a chromogenic reagent at pH 10 and the absorbance of Pb PAR complex was monitored at 530 nm. The pumps, valves and spectrophotometer were controlled by a personal computer. The detection limit (3 σ ) was 3ng of lead. The RSD is 1 7% at a level of 0 4μg lead. The proposed method was successfully applied to the determination of lead in fly ash of an incinerator for industrial waste and in river water certified reference material provided by the Japan Society for Analytical Chemistry. 关键词：环境样品痕量分析铅流动注射在线分离分光光度法

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环境样品中痕量铅的流动注射在线分离及分光光度检测(英文)

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