Alternating current driven atmospheric-pressure liquid discharge for the determination of elements with optical emission spectrometry
Alternating current driven atmospheric-pressure liquid discharge for the determination of elements with optical emission spectrometry
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交流驱动常压液体放电，用发射光谱法测定元素
DOI：
10.1039/c1ja00009h
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发表时间：
2011-01-01
影响因子：
3.4
通讯作者：
Hu, Shenghong
中科院分区：
文献类型：
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作者：
Huang, Ruimin;Zhu, Zhenli;Hu, Shenghong
使用电解质溶液作为一个电极，产生由交流电源维持的大气压等离子体。等离子体的发射光谱与溶液中存在的金属离子有关，因此可用于金属离子检测。该源的主要优点是，它工作在低流速在0.1至0.8 mL/min的范围内。放电电解质阴离子，pH值和溶液流速对发射信号的影响进行了研究。Na和Cd的分析响应曲线至少在0.5-100 mg L−1范围内表现出良好的线性。Na和Cd的检测限分别为0.04和0.09 mg L−1。方法已用于GBW（E）080408和GBW（E）080402模拟天然水样中微量元素的测定。所得结果与参考值吻合良好。为水样中元素的测定提供了一种可供选择的分析方法。
An atmospheric pressure plasma sustained by an alternating-current power supply was generated using the electrolyte solution as one electrode. The emission spectra of the plasma are related to the metal ions present in the solution and thus can be used for metal ion detection. The main advantage of this source is that it operates at low flow rates in the range of 0.1 to 0.8 mL/min. The effects of the discharge electrolyte anion, the pH and solution flow rate on emission signal were studied. The analytical response curves for Na and Cd demonstrated good linearity at least in the range of 0.5–100 mg L−1. The limit of detection of Na and Cd were determined to be 0.04 and 0.09 mg L−1, respectively. The method was applied for the determination of elements in simulated natural water samples (GBW(E)080408 and GBW(E)080402). The obtained results were in good agreement with the reference values. It provides an alternative analytical method for the determination of elements in water samples.