Determination of methylmercury in biological samples and sediments by capillary gas chromatography coupled with atomic absorption spectrometry after hydride derivatization and solid phase microextraction

1998 ◽  
Vol 13 (10) ◽  
pp. 1141-1144 ◽  
Author(s):  
He Bin ◽  
Jiang Gui-bin ◽  
Ni Zhe-ming
Keyword(s):  
Gas Chromatography ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Biological Samples ◽  
Capillary Gas Chromatography ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Absorption Spectrometry

Microcrystalline cellulose for the dispersive solid-phase microextraction and sensitive determination of chromium in water using electrothermal atomic absorption spectrometry

2018 ◽  
Vol 33 (9) ◽  
pp. 1529-1535 ◽  
Author(s):  
Ignacio López-García ◽  
Juan José Marín-Hernández ◽  
Manuel Hernández-Córdoba
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Solid Phase Microextraction ◽  
Solid Phase ◽  
Electrothermal Atomic Absorption Spectrometry ◽  
Absorption Spectrometry ◽  
Chromium Speciation ◽  
Sensitive Determination ◽  
Low Levels

The use of non-expensive, commercial cellulose together with a cloud extraction stage facilitates chromium speciation at very low levels by electrothermal atomic absorption spectrometry.

scholarly journals Determination of lead in water resources by flame atomic absorption spectrometry after pre-concentration with ammonium pyrrolidinedithiocarbamate immobilized on surfactant-coated alumina

2007 ◽  
Vol 72 (6) ◽  
pp. 585-590 ◽  
Author(s):  
Morteza Talebi ◽  
Homeyra Safigholi
Keyword(s):  
Water Resources ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Flame Atomic Absorption Spectrometry ◽  
Solid Phase ◽  
Collection Efficiency ◽  
Absorption Spectrometry ◽  
Flame Atomic Absorption ◽  
Ammonium Pyrrolidinedithiocarbamate

Arapid, simple, and sensitive procedure based on modified solid phase extraction was developed for the pre-concentration and determination of trace amount of lead in water resources. Lead was reacted with ammonium pyrrolidinedithiocarbamate (APDC) to make a complex. The complex was then collected in a column packed with surfactant-coated alumina. The parameters affecting the collection efficiency and desorption rate of the lead complexes from the column were investigated and optimized. The collection efficiency of the lead complex on the adsorbent was excellent under the optimized conditions. The results obtained from the recovery test showed the capability and reliability of the method for the analysis of trace amounts of lead. The proposed pre-concentration procedure made it possible to apply conventional flame atomic absorption spectrometry (FAAS) for the sensitive determination of trace amounts of lead in water resources. .

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