scholarly journals Mercury Pollution Exploration in Latvia with High-Sensitivity Zeeman Atomic Absorption Spectrometry

2011 ◽  
Vol 7 (-1) ◽  
pp. 39-45
Author(s):  
Egils Bogans ◽  
Zanda Gavare ◽  
Anda Svagere ◽  
Rita Poikane ◽  
Jānis Skudra
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
High Sensitivity ◽  
Absorption Spectrometry ◽  
Mercury Pollution ◽  
Rivers And Lakes ◽  
Long Term Trends ◽  
Insight Into ◽  
Hg Pollution

Mercury Pollution Exploration in Latvia with High-Sensitivity Zeeman Atomic Absorption Spectrometry This research presents Hg pollution measurements performed in Latvia with sensitive method using Zeeman AAS analyzer RA-915+ and necessary attachments. Air in Riga city and water samples from a number of rivers and lakes of Latvia were analyzed for presence of low-level Hg concentrations. Ombrotrophic bog peat was analyzed to get insight into long-term trends. Environment in the sites sampled is relatively clean according to the results obtained, but there are local spots of pollution.

The atomic absorption spectrometry of molybdenum in the presence of sulphonated aromatic compounds

1981 ◽  
Vol 46 (3) ◽  
pp. 708-716 ◽  
Author(s):  
Josef Komárek ◽  
Vít Mahr ◽  
Lumír Sommer
Keyword(s):  
Nitrous Oxide ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Aromatic Compounds ◽  
High Sensitivity ◽  
Absorption Spectrometry ◽  
Probable Mechanism ◽  
Sodium Salts ◽  
Sulphosalicylic Acid

The effect of sulphonated aromatic compounds on the atomization of molybdenum in acetylene-air and nitrous oxide-acetylene flames was studied. The absorbance signal is increased in the presence of these compounds only in acetylene-nitrous oxide flames and in the presence of potassium or sodium salts. Otherwise, the absorbance is decreased. The probable mechanism of the effect of sulphonated aromatic groups during the atomization of molybdenum is discussed. The determination in the presence of 0.1M 5-sulphosalicylic acid and 9.5 mg ml-1 KCl is without interference and has high sensitivity.

Quantification of Tire-Tread Particles Using Extractable Organic Zinc as Tracer

1999 ◽  
Vol 72 (5) ◽  
pp. 969-977 ◽  
Author(s):  
Patrik Fauser ◽  
Jens Christian Tjell ◽  
Hans Mosbaek ◽  
Kim Pilegaard
Keyword(s):  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Environmental Samples ◽  
High Sensitivity ◽  
Absorption Spectrometry ◽  
Soil Samples ◽  
New Method ◽  
Organic Zinc

Abstract A method for identifying and quantifying tire-tread particles in the environment has been developed. It is based on the measurement of extractable organic zinc. The high sensitivity of atomic absorption spectrometry (AAS) with a heated graphite atomizer (HGA) permits assessment of submilligram amounts of tire debris in environmental samples. The analysis is performed on aerosol and soil samples. This new method is more accurate and faster than the previously reported IR method.

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