The simultaneous determination of traces of cobalt, chromium, copper, iron, manganese and zinc by atomic fluorescence spectrometry with preconcentration by an automated solvent extraction procedure

1973 ◽  
Vol 63 (1) ◽  
pp. 210-215 ◽  
Author(s):  
M. Jones ◽  
G.F. Kirkbright ◽  
L. Ranson ◽  
T.S. West
Keyword(s):  
Solvent Extraction ◽  
Simultaneous Determination ◽  
Extraction Procedure ◽  
Fluorescence Spectrometry ◽  
Atomic Fluorescence Spectrometry ◽  
Cobalt Chromium ◽  
Atomic Fluorescence ◽  
Iron Manganese

Simultaneous Determination of Trace Antimony and Bismuth in Jilin Ginseng with Microwave Digestion Hydride Generation Atomic Fluorescence Spectrometry

2012 ◽  
Vol 549 ◽  
pp. 188-192 ◽  
Author(s):  
Shu Ying Guo ◽  
Zheng Jia Ji ◽  
Bo Feng ◽  
Jiang Bian
Keyword(s):  
Ascorbic Acid ◽  
Simultaneous Determination ◽  
Microwave Digestion ◽  
Hydride Generation ◽  
Reaction Medium ◽  
Fluorescence Spectrometry ◽  
Atomic Fluorescence Spectrometry ◽  
Atomic Fluorescence ◽  
Masking Agents

A robust, accurate and sensitive analytical procedure was developed for the simultaneous determination of trace Antimony and Bismuth in Jilin ginseng by hydride generation atomic fluorescence spectrometry. The parameters were studied systematically, such as acid concentration of the reaction medium, flow rate of the carrier gas and shield gas, the atomizer of height, etc. Ascorbic acid and thiourea were used as reducer or masking agents to enhance the generation efficiency of the volatile species of Sb and Bi. In the presence of thiourea and ascorbic acid, the influences of some coexisting elements on the determination of antimony and bismuth were investigated.

scholarly journals Simultaneous Determination of Methylmercury and Ethylmercury in Rice by Capillary Gas Chromatography Coupled On-line with Atomic Fluorescence Spectrometry

2005 ◽  
Vol 88 (2) ◽  
pp. 665-669 ◽  
Author(s):  
Jian-Bo Shi ◽  
Li-Na Liang ◽  
Gui-Bin Jiang
Keyword(s):  
Gas Chromatography ◽  
Simultaneous Determination ◽  
Capillary Gas Chromatography ◽  
Total Mercury ◽  
Fluorescence Spectrometry ◽  
Atomic Fluorescence Spectrometry ◽  
Atomic Fluorescence ◽  
On Line ◽  
Rice Samples

Abstract A comprehensive method for simultaneous determination of methylmercury (MeHg) and ethylmercury (EtHg) in rice by capillary gas chromatography (GC) coupled on-line with atomic fluorescence spectrometry was developed. The experimental conditions, including the pyrolyzer temperature and flow rates of the make-up gas and sheath gas, were optimized in detail. The absolute detection limits (3σ) were 0.005 ng as Hg for both MeHg and EtHg. The relative standard deviation values (n = 5) for 10 ng Hg/mL of MeHg and EtHg were 2.5 and 1.3%, respectively. The method was evaluated by analyzing 2 certified reference materials (DORM-2 and GBW08508), and the determined values of MeHg and total mercury concentrations were in good agreement with the certified values. In addition, the recoveries of MeHg and EtHg spiked into a rice sample collected from Jiangsu province in China were 86 and 77%, respectively. The proposed method was applied to analysis of MeHg and EtHg in 25 rice samples cultivated in 15 provinces of China. In all samples, MeHg was detectable and no EtHg was found. The MeHg contents in rice samples ranged from 1.9 to 10.5 ng/g, accounting for 7–44% of the total mercury measured.

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