scholarly journals An investigation of toxic heavy metals (Pb, Cd, Cu, Cr and Zn) in Garlic (Allium sativum L.) and soil samples collected from different locations of Punjab, Pakistan using atomic absorption spectrometry

2014 ◽  
Vol 2 (5) ◽  
pp. 667-678 ◽  
Author(s):  
Sadia Ata ◽  
Azam Mukhtar ◽  
Sidra Tayyab ◽  
Samina Ghafoor
Keyword(s):  
Heavy Metals ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Allium Sativum ◽  
Absorption Spectrometry ◽  
Soil Samples ◽  
Toxic Heavy Metals

scholarly journals Level of Heavy Metals in Selected Vegetables Collected from Ijagun Dumpsite in Ogun State, Nigeria

2019 ◽  
pp. 1-8
Author(s):  
Damilola Alex Omoboyowa ◽  
Clement Olomola Akinnubi ◽  
Taiwo Christiana Ajueyisi
Keyword(s):  
Heavy Metals ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Absorption Spectrometry ◽  
Soil Samples ◽  
Ogun State ◽  
Celosia Argentea ◽  
Stems And Leaves ◽  
Mixed Acids ◽  
High Absorption

Wastes from dumpsites constitute a major challenge for plants, human and environmental health. This study investigated the levels of heavy metals in stems and leaves of three (3) Vegetables and soil samples obtained from Ijagun dumpsite, located in Ijebu Ode, Ogun state. The samples were digested with mixed acids and aliquots of the extracts were analyzed for Zinc (Zn), lead (Pb), Cobalt (Co) and Copper (Cu) using the Atomic Absorption Spectrometry (Perkin Elmer A Analyst 700 model). The results obtained showed that there was an increase in the level of selected heavy metals observed in the topsoil compared with the underground soil collected from the dumpsite. The level of the metals present in the topsoil was in the order Zn > Pb >Cu > Co. The stem of Celosia argentea and Cochorus olitorius accumulate more heavy metals compared with the leaf. The level of these selected heavy metals were observed to be far above the WHO/FAO and NAFDAC permissible values in plant except Co in the stem and leaf of Celosia argentea and Talinum triangulae, indicating that the leaf and stem of vegetables from Ijagun dumpsite pose serious health threat to human. However, C. olitorius and C. argentea with high absorption ability for Zn, Pb and Cu could serve as a phytoremediator for soils contaminated with these metals.

scholarly journals Estimation the Presence of Heavy Metals and Trace Elements in Indian Herbal Cosmetics by Atomic Absorption Spectrophotometer

1970 ◽  
Vol 7 (5) ◽  
pp. 59-64
Author(s):  
Krishnasis Chakraborty ◽  
Suraj Chaudhary
Keyword(s):  
Heavy Metals ◽  
Trace Elements ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Absorption Spectrometry ◽  
Permissible Limit ◽  
Toxic Heavy Metals ◽  
Herbal Cosmetics ◽  
Cu And Zn ◽  
Metals And Trace Elements

Heavy metals are identically Pb, Cd and micronutrients elements like Ca, Mg, Al, Cu and Zn were quantitatively estimated using Flame Atomic Absorption Spectrometry (FAAS). Similarly, heavy metals such as As and Hg were quantitatively estimated by Hydride Generation Technique i.e. Cold Vapor Atomic Absorption Spectrometry method expending nitrogen as carrier gas in 30 herbal cosmetic preparations available in Indian markets. The results designate that among the toxic heavy metals. In the present study, Arsenic was found significantly well below the permissible limit, but Cd was found above the permissible limit in the all samples. Trace elements like Ca and Mg were found in higher amount than compare to Al, Cu, and Zn. Presence of trace elements can corroborate to be beneficial but existence of toxic heavy metals in such amounts certainly has adverse effects on the consumer health who always take the herbal products in an impression of being safe because of the natural origin. In conclusion, execution of strict and isolated regulatory guidelines and promotion of Good Analytical Practice (GAP), Good Manufacturing Practices (GMP) and Good Agricultural and Control Practices (GACP) is suggested for herbal cosmetics by WHO and other regulatory agencies. This study presents the status of heavy metals and trace elements in marketed herbal cosmetic formulations and provides a simple and convenient AAS method which can effectively be adopted at Industrial level for the quality control and standardization of herbal cosmetic preparations and other related products.  

Determination and investigation of heavy metal concentrations in sediments of the Persian Gulf coasts and evaluation of their potential environmental risk

2020 ◽  
Vol 3 (04) ◽  
pp. 60-71
Author(s):  
Hoda Allami ◽  
Afsaneh Afzali ◽  
Rouhollah Mirzaei
Keyword(s):  
Heavy Metals ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Persian Gulf ◽  
Electrothermal Atomic Absorption Spectrometry ◽  
Absorption Spectrometry ◽  
Coastal Sediments ◽  
Toxic Heavy Metals ◽  
Flame Atomic Absorption ◽  
The Persian Gulf

 The contamination of coastal sediments with toxic heavy metals caused to a serious concern due to their environmental consequences. The aim of this study was to determine the concentration of heavy metals such as lead (Pb), copper (Cu), nickel(Ni) and manganese (Mn) in the sediments of the Persian Gulf coast in Kangan and Siraf ports in Bushehr province. In this regard, the sampling was performed in 10 stations with different uses in two depths of 0-5 and 5-20 cm along the coast of the Persian Gulf. The concentration of heavy metals was measured after drying, acid digestion and microwave by using flame atomic absorption spectrometry (F-AAS). The results showed that the average concentrations of Mn(II), Ni(II), Cu(II) and Pb(II) was measured 121.47, 11.51, 11.59 and 5.30 in surface sediments, and 131.59, 10.81, 12.56 and 4.88 µg g-1 in deep sediments. All analysis validated by electrothermal atomic absorption spectrometry (ET-AAS).

Determining the Concentration of Some Heavy Metals in Olt River. The Impact of the Heavy Metals from the Waste Waters from Rm. V�lcea Chemical Plant over Natural Emissary River Olt

2008 ◽  
Vol 59 (9) ◽  
Author(s):  
Stefan Valentin Branescu ◽  
Alexandru Popescu ◽  
Daniela Marinescu
Keyword(s):  
Waste Water ◽  
Heavy Metals ◽  
Atomic Absorption Spectrometry ◽  
Atomic Absorption ◽  
Absorption Spectrometry ◽  
Waste Waters ◽  
Toxic Heavy Metals ◽  
Spectrometry Method ◽  
The Impact

The pollution of water surfaces with heavy metals often has disastrous effects on environment. That is why the determination of heavy metals� concentrations at levels of ppm or ppb is strictly necessary. This paper presents a method for the determination of these components� ( Ni, Cr, Zn, Fe, Cu) distribution on the Olt river course - their impact on the Olt river- as a result of the evacuation of waste water with toxic heavy metals from Rm.Valcea Chemical Platfom. The most toxic heavy metals determined were: Ni, Cr, Zn, Fe, Cu,. The concentration of these metals was determined by atomic absorption spectrometry method (AAS) using an analyzer type A ANALYST 700.

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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