Room temperature ionic liquids and ammonium pyrrolidine dithiocarbamate synergetically enhanced the determination of zinc by chemical vapor generation coupled with flame atomic absorption spectrometry
Room temperature ionic liquids and ammonium pyrrolidine dithiocarbamate synergetically enhanced the determination of zinc by chemical vapor generation coupled with flame atomic absorption spectrometry
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室温离子液体和吡咯烷二硫代氨基甲酸铵协同增强化学气相发生-火焰原子吸收光谱法测定锌
DOI：
10.1039/c3ay26463g
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发表时间：
2013-03
影响因子：
3.1
通讯作者：
Li Xiaoli
中科院分区：
文献类型：
--
作者：
Kong Jinli;Zhou Neng;Cui Rongrong;Li Xiaoli
基于室温离子液体(RTILs)与吡咯烷二硫代氨基甲酸铵(APDC)的协同增敏作用，建立了化学气相发生-火焰原子吸收(FAAS)测定锌的新方法。以RTILs和APDC作为协同增强剂。加入RTIL后，锌的CVG效率提高了3.6倍。在0.02%(m/v)APDC和0.1%(m/v)1-丁基-3-甲基咪唑四氟硼酸盐([C4MIM]BF4)存在下，酸化分析溶液与KBH4混合，有效地产生了48%的蒸汽生成效率(CVG效率是根据CVG前后的锌浓度计算的)。详细考察了RTILs、APDC、HNO3和KBH4的浓度、载气流速、反应管和传送管的长度以及其他元素的干扰等因素对CVG和后续测定的影响。在最佳实验条件下，−-1的检出限为9 ng m L，对400ngm L−-1的相对标准偏差为5.7%(n=5)。方法用于实际水样和标准样品中锌的测定，结果满意。
A new method for the determination of zinc based on the synergetic enhancement effect of room temperature ionic liquids (RTILs) and ammonium pyrrolidine dithiocarbamate (APDC) by chemical vapor generation (CVG) coupled with flame atomic absorption spectrometry (FAAS) was developed. RTILs and APDC were used as synergetic enhancement reagents. The addition of RTILs led to a 3.6 times improvement in the CVG efficiency of zinc. Zinc hydride was effectively generated with a 48% vapor generation efficiency (the CVG efficiency was calculated on the basis of the concentrations of zinc before and after CVG) by mixing the acidified analyte solutions with KBH4 in the presence of 0.02% (m/v) APDC and 0.1% (m/v) 1-butyl-3-methylimidazolium tetrafluoroborate ([C4MIM]BF4). Some parameters that influenced CVG and subsequent determination were evaluated in detail, such as the concentrations of RTILs, APDC, HNO3 and KBH4; flow rates of the carrier gas, lengths of the reaction tube and transfer tube, as well as interference from other elements. A detection of limit of 9 ng mL−1 and a relative standard deviation (RSD) of 5.7% at 400 ng mL−1 Zn(II) (n = 5) were obtained under optimal experimental conditions. The proposed method was successfully applied to the determination of zinc in real water samples and certified reference samples with satisfactory results.
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影响因子：
7.4
作者：
Luna;Sturgeon;de Campos RC
通讯作者：
Luna;Sturgeon;de Campos RC
影响因子：
3.4
作者：
Chujie Zeng;N. Zhou;Jiwen Luo
通讯作者：
Chujie Zeng;N. Zhou;Jiwen Luo
影响因子：
6.2
作者：
Hanwen Sun;R. Suo
通讯作者：
Hanwen Sun;R. Suo
影响因子：
13.1
作者：
Liu, JF;Jönsson, JÅ;Jiang, GB
通讯作者：
Jiang, GB
DOI：
10.1039/b212844f
发表时间：
2003
期刊：
The Analyst
影响因子：
--
作者：
P. Smichowski;S. Farías;Sebastián Pérez Arisnabarreta
通讯作者：
P. Smichowski;S. Farías;Sebastián Pérez Arisnabarreta