| 非分离状态下FI-KR-FAAS测定铁的价态 |
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| 作者姓名： | Wang ZY Zhang HK Fang HD Su YD Mittal GS |
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| 作者单位： | 国家海洋局南海环境监测中心;仲恺农业工程学院轻工食品学院;同济大学化学系;圭尔夫大学 |
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| 基金项目： | 国家自然科学基金项目(29973029)资助 |
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| 摘 要： | 建立了流动注射(FI)编结反应器(KR)在线预富集与火焰原子吸收光谱(FAAS)联用非分离状态下测定铁的价态的新方法。进样流速6.0 mL.min-1;进样时间60s,测定0.04 mg.L-1的Fe(Ⅲ)和Fe(Ⅱ),Fe(Ⅲ)和Fe(Ⅱ)的浓集系数(EF)分别为41和9;检出限分别为2.5和14.3μg.L-1;相对标准偏差(RSD,n=11)分别为2.3%和3.1%。以0.1‰φ的三乙醇胺为掩蔽剂,Fe(Ⅲ)和Fe(Ⅱ)在水样中的回收率分别为97%～101%和96%～100%。
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| 关 键 词： | 流动注射 非分离状态 Fe(Ⅲ) Fe(Ⅱ) |
FI-KR non-separated method coupled with FAAS for the determination of Fe(II) and Fe(III) in water |
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| Wang ZY,Zhang HK,Fang HD,Su YD,Mittal GS.FI-KR non-separated method coupled with FAAS for the determination of Fe(II) and Fe(III) in water[J].Spectroscopy and Spectral Analysis,2012,32(3):817-820. |
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| Authors: | Wang Zhong-yuan Zhang Hong-kang Fang Hong-da Su Yao-dong Mittal Gauri S |
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| Institution: | South China Sea Environment Monitoring Center, Guangzhou 510300, China. zhongyuan764@126.com |
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| Abstract: | An FI-KR non-separated method coupled with FAAS for the determination of Fe(II) and Fe(III) was developed. With 60 s of sampling at a flow rate of 6.0 mL x min(-1), EF of 41 for Fe(III) and 9 for Fe(II) were obtained. The precision (RSD, n = 11) for Fe(III) and Fe(II) was 2.3% and 3.1% at the 0.04 mg x L(-1) level respectively. When 0.1 per thousand phi TEA was used as masking reagent, the recovery rate for Fe(III) and Fe(II) was from 97% to 101% and from 96% to 100% respectively. |
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| Keywords: | Flow injection Non-separated method Fe(Ⅲ) F(Ⅱ) |
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