scholarly journals PROFILING OF SELECTED MICRONUTRIENTS AND HEAVY METAL ELEMENTS IN OCIMUM SANCTUM BY ATOMIC ABSORPTION SPECTROSCOPY

2018 ◽  
Vol 9 (9) ◽  
pp. 207-209
Author(s):  
Himakar K Reddy ◽  
Jhansi U ◽  
Subramanyam G
Keyword(s):  
Heavy Metal ◽  
Atomic Absorption ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy ◽  
Ocimum Sanctum ◽  
Metal Elements ◽  
Heavy Metal Elements

scholarly journals Heavy Metal Contamination

2021 ◽  
Author(s):  
Soni Kumari ◽  
Amarnath Mishra
Keyword(s):  
Heavy Metal ◽  
Sewage Sludge ◽  
Atomic Absorption ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy ◽  
Metal Contamination ◽  
Industrial Waste ◽  
Inductively Coupled Plasma ◽  
Heavy Metal Contamination ◽  
Inductively Coupled

In the era of industrialization, pollution has totally deteriorated the quality and diversity of life. Heavy metal contaminations are the major causes of environment deteriorations. The basic reasons are natural as well as anthropogenic. Chief sources of heavy metal contamination are air pollution, river sediments, sewage sludge, town waste composts, agricultural chemicals like fertilizers and pesticides, and industrial waste like factories releasing chemicals, anthropogenic activities, etc. Agricultural soils in many parts of the world are generally contaminated by heavy metal toxicity such as Cd, Cu, Zn, Ni, Co, Pb, Hg, As, etc. These are due to the long-term use of phosphate fertilizers, sewage sludge, dust from smelters, industrial waste, etc. Heavy metals in soils are detected with some specific instruments like atomic absorption spectroscopy, inductively coupled plasma, inductively coupled plasma-mass spectroscopy, and X-ray fluorescence and spectroscopy. Among all these instruments, atomic absorption spectroscopy (AAS) is the best because it gives the precise quantitative determination. AAS is a method applied for measuring the quantity of the trace elements present in the soil or any other samples.

ENSURING ENVIRONMENTAL SAFETY IN THE CONDITIONS OF ENVIRONMENTAL POLLUTION BY CADMIUM

2018 ◽  
Vol 8 (1) ◽  
pp. 59-62
Author(s):  
Marina N. ZAKIROVA ◽  
Elena V. CHUPRINA
Keyword(s):  
Heavy Metal ◽  
Environmental Pollution ◽  
Atomic Absorption ◽  
Absorption Spectroscopy ◽  
Human Body ◽  
Atomic Absorption Spectroscopy ◽  
Raw Materials ◽  
Environmental Safety ◽  
Negative Consequences ◽  
Technological Processes

Technological processes are considered and the industries that are the source of cadmium entering the environment are identifi ed. The materials, raw materials and technologies promoting pollution of air with Cd-containing emissions are determined. The ways of gett ing cadmium into the human body are considered. The negative consequences of accumulation of heavy metal in the human body are estimated. The method of atomic absorption spectroscopy was used to study food products for the content of cadmium in them. Studies allow to regard cadmium as a super-toxicant of the environment due to its widespread prevalence and extreme danger. The measures of a technical and medico-prophylactic nature to limit the effects of cadmium on humans are proposed.

scholarly journals PHARMACOGNOSTICAL AND PHYSICOCHEMICAL EVALUATION OF THE PLANT LEUCAS ASPERA

2016 ◽  
pp. 263
Author(s):  
K.g Kripa ◽  
R. Sangeetha ◽  
D. Chamundeeswari
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Atomic Absorption ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy ◽  
Metal Content ◽  
Heavy Metal Content ◽  
Water Soluble ◽  
Leucas Aspera ◽  
Aerial Parts

<p>ABSTRACT<br />Objective: Leucas aspera (Willd.) Linn. is a herbaceous annual distributed throughout India from the Himalayas down to Ceylon. This study was aimed<br />to investigate the pharmacognostical, phytochemical characteristics, and heavy metal content of the aerial parts of L. aspera.<br />Methods: The aerial parts of the plant were subjected to macroscopical and microscopical characterization, followed by physicochemical evaluations<br />using standardized procedures. Atomic absorption spectroscopy (AAS) of the dried plant powder was done to determine the metal and mineral<br />content. Preliminary phytochemical screening and metabolite analysis of the hydroalcoholic extract of L. aspera (HAELA) were also performed to<br />analyze the various phytoconstituents.<br />Results: In this study, the microscopic characteristics of L. aspera were found to be consistent with earlier reports. The total ash value was relatively<br />high (11.5% w/w). Alcohol soluble and water-soluble extractive values were found to be 6.5% and 9%, respectively. AAS indicated the plant to<br />contain insignificant quantities of heavy metals and considerable amounts of copper, sodium, potassium, and iron. Phytochemical analysis revealed<br />the presence of alkaloids, flavonoids, glycosides, lignins, phenols, saponins, sterols, and tannins in HAELA.<br />Conclusion: The pharmacognosy - anatomical, physicochemical, heavy metal characteristics, and the preliminary phytochemical studies of the aerial<br />parts of L. aspera have revealed the presence of phytoconstituents such as triterpenoids, phenolic compounds, flavonoids, and glycosides; insignificant<br />quantities of heavy metals and significant content of phenolics and tannins in the plant.<br />Keywords: Leucas aspera, Ash value, Heavy metal content, Atomic absorption spectroscopy.</p>

scholarly journals Efek Komposisi Bioadsorben α-Keratin/Alginat Terhadap Kapasitas Adsorpsi Logam Berat Besi (Fe)

2018 ◽  
Vol 14 (2) ◽  
pp. 323
Author(s):  
Elsa Ninda Karlinda Putri ◽  
Syahna Febrianastuti ◽  
Easy Vicky Maylinda ◽  
Ganjar Fadillah ◽  
Candra Purnawan
Keyword(s):  
Electron Microscopy ◽  
Heavy Metal ◽  
Scanning Electron Microscopy ◽  
Fourier Transform ◽  
Atomic Absorption ◽  
Adsorption Capacity ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy ◽  
Infra Red ◽  
Scanning Electron

<p>Penelitian terkait pengaruh komposisi α-keratin/alginat terhadap kapasitas adsorpsi logam berat besi (Fe) telah dilakukan. Penelitian ini bertujuan untuk mengetahui karakter dan optimasi adsorpsi dari bioadsroben komposit α-keratin/alginat terhadap daya serap logam berat Fe dalam larutan air. Proses preparasi bioadsorben α-keratin/alginat dilakukan dengan metode enkapsulasi pada larutan CaCl<sub>2</sub> 2% (b/v). Karakterisasi bioadsorben dilakukan menggunakan <em>Fourier Transform Infra-Red</em> (FTIR),<em> Scanning Electron Microscopy</em> (SEM)<em> </em>dan proses adsorbsi dilakukan dengan metode<em> batch</em>. Hasil karakterisasi IR pada komposit α-keratin/alginat menunjukkan terdapatnya serapan pada bilangan gelombang 1140-820,75 cm<sup>-1 </sup>yang merupakan reduksi gugus <em>mannuronate</em> dari alginat. Hal ini menunjukan bahwa alginat telah terikat secara kimia dengan α-keratin. Adsorpsi logam Fe (3 ppm) dalam larutan dilakukan dengan variasi komposisi α-keratin:alginat secara berturut-turut sebagai berikut 1:1; 1:2; 1:3; 2:1 dan 3:1 (b/b). Hasil pengukuran menggunakan <em>Atomic Absorption Spectroscopy</em> (AAS) dengan metode kurva kalibrasi standar menunjukkan komposisi optimum penyerapan logam Fe (3 ppm) adalah 1:2 dengan kapasitas adsorpsi sebesar 205,64 mg/g. Hasil karakterisasi SEM pada komposit α-keratin:alginat komposisi 1:2 (b/b) yang memberikan kemampuan adsorpsi yang terbesar menunjukkan bahwa permukaan rambut manusia tidak tertutup secara menyeluruh sehingga gugus aktif dan celah-celah kecil pada komposit dapat berperan dalam proses adsorpsi logam berat besi (Fe).</p><p><strong>The </strong><strong>Effect </strong><strong>o</strong><strong>f α-Keratin</strong><strong>/</strong><strong>Alginate Bioadsorbent Composition </strong><strong>on</strong><strong> </strong><strong>the </strong><strong>Adsorption Capacity </strong><strong>o</strong><strong>f Heavy Metal </strong><strong>of Iron </strong><strong>(Fe)</strong><strong>.</strong> A study of the influence of α-keratin-alginate composition on the heavy metal adsorption of Fe has been performed. The research aims to determinate the character and adsorption optimation of α-keratin/alginate composite for Fe adsorption in aqueous solution. The preparation α-keratin/alginate composite was conducted by encapsulation method in CaCl<sub>2 </sub>2% solution. The characterization of bioadsorbent was performed by Fourier Transform Infra-Red (FTIR), Scanning Electron Microscopy (SEM) and adsorption process was conducted by batch method. The FTIR result on α-keratin/alginate shows that adsorption at wavenumber of 1140-820.75 cm<sup>-1</sup> which indicates the reduction of mannuronate group from alginate. This suggests that alginate was chemically bound with α-keratin. The adsorption of Fe (3 ppm) in the solution was carried out with variation of composition α-keratin:alginate of 1:1; 1:2; 1:3; 2:1; and 3:1 (w/w). The measurement using AAS (atomic absorption spectroscopy)<em> </em>with standar calibration curve method showed that optimum composition of Fe (3 ppm) adsorption was 1:2 (w/w) with adsorption capacity of 205.64 mg/g.  The SEM result on α-keratin/alginate 1:2 (w/w) which had the greatest adsorption capability shows that the surface of human hair was not completely closed thus the active groups and pores can play a role in the process of adsorption of heavy metal iron (Fe).</p>

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