摘要
采用D412螯合树脂填充微柱预富集和顺序流动注射火焰原子光谱仪联用,测定海水样品中Cu2+,优化了实验工作各项条件,并进行干扰实验。实验结果表明:在最佳实验条件下,进样体积5mL时,Cu2+的富集倍数为10倍,Cu2+含量40μg/L的标样连续测定11次的相对标准偏差为3.87%,以空白溶液11次测定的标准偏差的3倍求得检出限为0.91μg/L。将该方法用于实际海水样品中Cu2+的测定,加标回收率为96%。
A concentration micro column filled with D412 chelating resin is adopted here to coupled with flow injection-atomic absorption spectrometry.The analytical system for Cu2+ in sea water has been optimized in details.Possible interference for co-existing chemical species in seawater on the related analytical system for Cu2+ had been discussed.Based on the optimized conditions above,when the volume of seawater sample is 5mL,enrichment factor of the three elements is 10 times in comparison to conventional FAAS process(40?滋g/L,Cu2+ in man-made sea water sample),while detection limit is 0.91?滋g/L and RSD(n=11) 3.87%.The analytical system had been successfully applied to the determination of Cu2+ in seawater with recovery within 96%.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2010年第S2期488-490,共3页
Environmental Science & Technology
基金
"十一五"支撑项目子课题(2006BAK10B09-09)
上海市科委项目(08142200202
10142201800)
上海市教委重点学科(J50702)
关键词
流动注射
螯合树脂
在线富集
原子吸收
海水
铜
flow injection
chelating resin
on-line concentration
atomic adsorption
seawater
copper
