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High-Sensitivity Determination of K,Ca,Na,and Mg in Salt Mines Samples by Atomic Emission Spectrometry with a Miniaturized Liquid Cathode Glow Discharge
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نویسنده
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yu j. ,zhang z. ,lu q. ,sun d. ,zhu s. ,zhang x. ,wang x. ,yang w.
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منبع
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journal of analytical methods in chemistry - 2017 - دوره : 2017 - شماره : 0
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چکیده
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An atomic emission spectrometer (aes) based on a novel atmospheric pressure liquid cathode glow discharge (lcgd) as one of the most promising miniaturized excitation sources has been developed,in which the glow discharge is produced between a needle-like pt anode and the electrolyte (as cathode) overflowing from a quartz capillary. lower energy consumption (<50 w) and higher excitation efficiency can be realized by point discharge of the needle-like pt. the miniaturized lcgd seems particularly well suited to rapid and high-sensitivity determination of k,ca,na,and mg in salt mines samples. the optimized analytical conditions of lcgd-aes were ph = 1 with hno 3 as electrolyte,650 v discharge voltage,and 3 ml min -1 solution flow rate. the limits of detections (lods) of k,ca,na,and mg were 0.390,0.054,0.048,and 0.032 mg l -1,respectively. measurement results of the lcgd-aes are in good agreement with the comparison value obtained by inductively coupled plasma (icp) and ion chromatography (ic). all results suggested that the developed portable analytical instrument can be used for on-site and real-time monitoring of metal elements in field with further improvement. © 2017 jie yu et al.
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آدرس
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key lab of bioelectrochemistry,environmental analysis of gansu province,college of chemistry and chemical engineering,northwest normal university,lanzhou, China, key lab of bioelectrochemistry,environmental analysis of gansu province,college of chemistry and chemical engineering,northwest normal university,lanzhou, China, key lab of bioelectrochemistry,environmental analysis of gansu province,college of chemistry and chemical engineering,northwest normal university,lanzhou,china,department of the university journal,northwest normal university,lanzhou, China, key lab of atomic and molecular physics,functional materials of gansu province,college of physics and electronic engineering,northwest normal university,lanzhou, China, key lab of bioelectrochemistry,environmental analysis of gansu province,college of chemistry and chemical engineering,northwest normal university,lanzhou, China, key lab of bioelectrochemistry,environmental analysis of gansu province,college of chemistry and chemical engineering,northwest normal university,lanzhou, China, key lab of bioelectrochemistry,environmental analysis of gansu province,college of chemistry and chemical engineering,northwest normal university,lanzhou, China, key lab of bioelectrochemistry,environmental analysis of gansu province,college of chemistry and chemical engineering,northwest normal university,lanzhou, China
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Authors
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