Characterization of green coffee varieties according to their metal content

1998 ◽  
Vol 358 (2) ◽  
pp. 177-183 ◽  
Author(s):  
M.J Martı́n ◽  
F Pablos ◽  
A.G González
Keyword(s):  
Metal Content ◽  
Green Coffee

scholarly journals Synthesis and characterization of new complexes of Co+2 , Ni+2 , Cu+2 and Zn+2 with (Sodium acetate thio ) ethylene ligands

2013 ◽  
Vol 10 (3) ◽  
pp. 650-657
Author(s):  
Baghdad Science Journal
Keyword(s):  
Content Analysis ◽  
General Formula ◽  
Metal Content ◽  
Sodium Acetate ◽  
Magnetic Measurement ◽  
Synthesis And Characterization ◽  
Square Planar ◽  
Square Planar Complexes ◽  
Uv Visible

This research involves the preparation of new ligands 1,1,2,2- tetrakis (sodium acetate thio)ethylene(L1) and 1,1,2- tris(sodiumacetatethio) ethylene(L2), through the reaction of disodium thioglycolate) with tetra chloro ethylene or tri chloro ethylene in (1:4) or (1:3) moler ratio . Homodinucliar complexes of general formlu [M2(L1)] and [M2(L2)ClH2O] , when M= Co(II), Ni(II), Cu (II) and Zn(II) also mono nuclear complexes of general formula [M(L2)] . The prepared complexes were characterized using spectral method (UV/Visible/ IR) , metal content analysis , magnetic and atomic measurements . The spectral and magnetic measurement indicats that some complexes have tetrahedral or square planar complexes environtment .

Metal content and crude polysaccharide characterization of selected mushrooms growing in Romania

2018 ◽  
Vol 67 ◽  
pp. 149-158 ◽  
Author(s):  
Daniela Elena Zavastin ◽  
Gabriela Biliută ◽  
Gianina Dodi ◽  
Ana-Maria Macsim ◽  
Gabriela Lisa ◽  
...  
Keyword(s):  
Metal Content ◽  
Crude Polysaccharide

Characterization of Heavy Metals in Municipal Solid Waste Incineration (MSWI) Slag

2011 ◽  
Vol 474-476 ◽  
pp. 1087-1092
Author(s):  
Hai Ying Zhang ◽  
Yi Zheng ◽  
Hong Tao Hu ◽  
Jing Yu Qi
Keyword(s):  
Heavy Metals ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Metal Content ◽  
Waste Incineration ◽  
Acidic Environment ◽  
Municipal Solid Waste Incineration ◽  
Time Period ◽  
Vibration Time

This work was done to develop a methodology for analysis of heavy metals in municipal solid waste incineration (MSWI) slag. It performed analysis of heavy metal content, leaching concentration as a function of pH and vibration time. It was found that content of heavy metals followed the decreasing sequence of Zn > Pb > Cu > Cd. Proper vibration time period was 1.0 h for extraction of theses metals, and their leaching concentrations increased with increasing pH from 1 to 11. Hence, an acidic environment could enhance leaching of the four heavy metals.

scholarly journals Eucalyptus Leaves as Potential Indicators of Gold Mine in Indonesia

2022 ◽  
Vol 8 (1) ◽  
pp. 45-50
Author(s):  
Dian Artha Kusumaningtyas ◽  
Hanif Khoirudin ◽  
Muamila Tami ◽  
Mila Utami Sari ◽  
Arif Nirsatmanto ◽  
...  
Keyword(s):  
Metal Content ◽  
Peak Power ◽  
Earth Metal ◽  
Nitride Layer ◽  
Leaf Sample ◽  
Metal Mining ◽  
Reactive Metal ◽  
Eucalyptus Leaves ◽  
Quantitative Results

Eucalyptus is a plant that is able to absorb gold (Au) particles from the soil and store them in the leaves. Eucalyptus roots have the ability to penetrate the soil of the calcrete zone, which is rich in the mineral calcium (Ca). Calcium is a chemical element with the symbol Ca and atomic number 20. As an alkaline earth metal, calcium is a reactive metal that forms a dark oxide-nitride layer when exposed to air. and contains Au particles as impurities, making this plant a potential natural indicator (biogeochemical) of potential Au metal mining. The Au content in eucalyptus leaves can be determined by using the XRF (X-Ray Fluorescence) instrumentation material analysis method for qualitative analysis and AAS (Atomic Absorption Spectroscopy) for quantitative results. The form of XRF characterization of the intensity versus energy spectrum of certain elements from the XRF analysis results obtained is a spectrum with a peak power of 9.731 keV which indicates the presence of Au metal in the sample. The results obtained qualitatively are the Au metal content in the eucalyptus leaf sample of (9.0 ± 0.5) ppm. However, the Au metal content in each leaf sample was different. This provides information that Eucalyptus from different plants has the potential to be a biogeochemical indicator of potential Au metal mining in Indonesia

Characterization of a portable method for the collection of exhaled breath condensate and subsequent analysis of metal content

2013 ◽  
Vol 15 (4) ◽  
pp. 721 ◽  
Author(s):  
Julie R. Fox ◽  
Ernst W. Spannhake ◽  
Kristin K. Macri ◽  
Christine M. Torrey ◽  
Jana N. Mihalic ◽  
...  
Keyword(s):  
Metal Content ◽  
Exhaled Breath Condensate ◽  
Exhaled Breath ◽  
Breath Condensate

Copper complexing properties, trace metal content and organic matter physico-chemical characterization of Greek beers

2017 ◽  
Vol 135 ◽  
pp. 66-73 ◽  
Author(s):  
Aikaterini Sakellari ◽  
Sotirios Karavoltsos ◽  
Marta Plavšić ◽  
Eleni Bempi ◽  
Georgia Papantonopoulou ◽  
...  
Keyword(s):  
Organic Matter ◽  
Trace Metal ◽  
Metal Content ◽  
Chemical Characterization ◽  
Physico Chemical ◽  
Trace Metal Content ◽  
Complexing Properties
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