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 Akumulasi Logam Berat Pb dan Cd dalam Sedimen dan Hubungannya dengan Biota Laut di Perairan Tulehu Ambon

2021 ◽  
Vol 5 (1) ◽  
pp. 41-49
Author(s):  
Nur Alim Natsir ◽  
Yusrianti Hanike ◽  
Asyik Nur Allifah Af
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Atomic Absorption ◽  
Atomic Absorption Spectroscopy ◽  
Metal Content ◽  
Heavy Metal Content ◽  
Marine Biota ◽  
Marine Life ◽  
Abundance And Diversity ◽  
Different Characteristics

The purpose of this study was to determine the Pb and Cd heavy metal content in sediments and their relationship with marine biota in Tulehu waters. The method used in the study was a survey by sampling at three research stations based on the representation of different characteristics at the study site. Station 1 at Tulehu Port 1 (non-operating and anthropogenic ship docker), Station 2 Tulehu Port 2 (ferry port) and Station 3 at Muara Sungai along Tulehu waters. The heavy metal content of Pb and Cd was measured using AAS (Atomic Absorption Spectroscopy). The heavy metal content of Pb and Cd has a effect on abundance and diversity of marine biota in Tulehu waters. This is evidenced by the Pb regression of marine biota abundance and diversity with values ​​r = 0,894 and Cd = 0.895. Increased content of heavy metals in sediments was followed by a decrease in the diversity of marine life in Tulehu waters.

scholarly journals Heavy metal contents of Hg, Cd, Pb, and Cu in splendid ponyfish Eubleekeria splendens (Cuvier, 1829) meat in Banten Bay, Indonesia

2021 ◽  
Vol 322 ◽  
pp. 01022
Author(s):  
Lisbet Sagala ◽  
Sulistiono ◽  
Djamar T.F.L. Batu
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Atomic Absorption ◽  
Metal Content ◽  
Accumulation Rate ◽  
Aquatic Organisms ◽  
The Body ◽  
Heavy Metal Content ◽  
Metal Contents ◽  
Observation Period

Banten Bay is an area affected by industrial, shipping, and domestic activities. These have the potential to produce wastes in the form of heavy metals and can accumulate in the body of aquatic organisms such as the splendid ponyfish Eubleekeria splendens (Cuvier, 1829). This study aimed to determine the accumulation of heavy metals Hg, Cd, Pb, and Cu in splendid ponyfish Eubleekeria splendens (Cuvier, 1829) meat in Banten Bay, Serang Regency, Banten Province. Sampling was carried out for three months, from August to October 2020. Analysis of heavy metal content was carried out using AAS (Atomic Absorption Spectrophotometer). The content of heavy metals Hg, Cd, Pb, and Cu in splendid ponyfish meat were <0.030 mg/kg, <0.001 mg/kg, <0.005 mg/kg, and 0.224-0.437 mg/kg. Bioaccumulation of heavy metals Hg, Cd, Pb, and Cu in small and big splendid ponyfish meat has a low accumulation rate. During the observation period, the heavy metal content of Hg, Cd, Pb, and Cu in small and big splendid ponyfish meat was not significantly different.

scholarly journals Investigations on Mud on Heavy Metal Contaminated Flood-Plain of Tisza

2003 ◽  
pp. 96-101 ◽  
Author(s):  
Krisztina Alapi ◽  
Zoltán Győri
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Content ◽  
Development Process ◽  
Thick Layer ◽  
Flood Plain ◽  
Heavy Metal Content ◽  
Water Soluble ◽  
Mine Accident ◽  
Year 2000

At the beginning of the year 2000 subsequently to a mine accident high heavy metal content mud entered the catchment area of the Tisza and was transported through the whole Hungarian section of the river. The majority of the heavy metals had been bounded to the floating sediment that was deposited on the flood-plain soil during flood forming a new, 5-10 cm thick layer. In the mud samples collected after the flood there was a clearly visible dark grey layer with significantly higher heavy metal content that was formed by the pollution wave and it was sorruonded by a light layer. The upper layer of flood-plain soils are formed from this mud layer during the soil development process, so the amount of Lakanen-Erviö soluble heavy metals that correlate with bioavailable heavy metal content was examined as well. In this case only the lead content was significantly higher in the dark layer.New mud samples were collected after the 2001 flood. Separate layers could not have been identified, their colour was similar to those of the previous year’s light layers’. Comparing to this light layer the total Zn and Lakanen-Erivö soluble metal content was significantly lower in the mud samples of the year 2001. While the proportions of total and Lakanen-Erviö soluble metal concentrations were equal in both of the layers regarding the elements, these ratios have significantly changed next year regarding Pb and Zn: the amount of Lakanen-Erviö soluble metals considerably decreased.As a result of sequential extraction the heavy metal content was rather low in the water soluble and exchangeable and NaOH-soluble fractions, so heavy metals found in the mud could be released in greater amount only in case of a heavy acidification.

scholarly journals Analysis of research methodology on the content of heavy metals in sediments on the Indonesian coastal

DEPIK ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 260-266
Author(s):  
Sayed Abdul Azis ◽  
Muhammad Irham ◽  
Sugianto Sugianto ◽  
Ichsan Setiawan ◽  
Amri Adnan
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Activation Analysis ◽  
Atomic Absorption ◽  
Coastal Waters ◽  
Metal Content ◽  
Atomic Absorption Spectrophotometry ◽  
Heavy Metal Content ◽  
Coastal Sediments ◽  
Aas Method

Heavy metal pollution is one of the problems that often occurs in Indonesian coastal waters. Comparative methods of looking at heavy metal content in coastal sediments include a way to show similarities and differences between one or more articles by using certain criteria. Different comparison methods to see the heavy metal content in sediments include the AAS (Atomic Absorption Spectrophotometer) method, AAN (Netron Activation Analysis), Regression, and USEPA methods. Based on the comparison of 2 methods, namely: AAS and AAN methods, the most efficient in analyzing heavy metals in sediments in coastal areas is the Atomic Absorption Spectrophotometry (AAS) method compared to the Neutron Activation Analysis (AAS) method.Keywords:CoastalSedimentHeavy MetalSpectrophotometer

Cd, Cu, Pb and Zn content of the riparian zone of the Tisza River (Hungary) after heavy metal pollution

2010 ◽  
Vol 59 (1) ◽  
pp. 117-124 ◽  
Author(s):  
Z. Győri ◽  
K. Alapi ◽  
J. Prokisch ◽  
T. Németh ◽  
D. Adriano ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Metal Content ◽  
Heavy Metal Content ◽  
Water Soluble ◽  
Zn Content ◽  
Exchangeable Fraction ◽  
Agricultural Use ◽  
Exogenous Origin ◽  
Year 2000

At the beginning of the year 2000 two considerable waves of pollution occurred on the river Tisza. With the second wave, in a simultaneous flood, a huge amount of mud contaminated with heavy metals settled on the floodplains. As most of the contaminated areas are under agricultural use, the study of the heavy metal charge of soils and herbaceous plants of the floodplain has great importance. Along the Tisza four sampling sites were established and 300 cm deep drill cores were taken. The results of analytical examinations show that the heavy metal content of the topsoil is higher than that of the earlier formed lower layers, although contamination is also present there. This suggests that pollutions like this are not unknown in the Tisza Valley. It is greatly important to take cadmium pollution into consideration, as this element is extremely toxic and easily taken up by plants, and is likely to be a serious problem in the floodplain. The risk of contamination in the topsoil of the floodplain soils were examined in detail. The soils’ heavy metal content was the highest where the two pollution waves can be measured first at the same site. For determining the amount of heavy metals bound to other compounds sequential extractions were carried out. The proportion of the water soluble and exchangeable fraction – that is bioavailable to plants – is negligible in respect of Cu, Pb, and Zn, while it is considerable in the case of Cd, showing the risk of contamination. The gained data show that the high proportion of cadmium results in a remarkable environmental risk, while other heavy metals turn into a bioavailable form only after intensive acidification. The proportion of the heavy metal fraction bound to humus materials was expected to be low due to the exogenous origin and freshness of the topsoil.

scholarly journals Analysis of Cadmium (Cd) and Lead (Pb) Heavy Metal Content in Shell and Mangroves at Bima Bay

2021 ◽  
Vol 2 (1) ◽  
pp. 58-61
Author(s):  
Khairuddin Khairuddin ◽  
M Yamin
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Atomic Absorption ◽  
Metal Content ◽  
Heavy Metal Content ◽  
Tissue Analysis ◽  
Sonneratia Alba ◽  
Lead Metal ◽  
Anadara Granosa ◽  
Cockle Shell

This study aims to determine the levels of heavy metals (Cd) and (Pb) in shellfishes and mangroves at Bima bay. The results showed that bivalves and mangrove tissue were analyzed for heavy metal content in the form of lead (Pb), and Cadmium (Cd) using an Atomic Absorption Spectrophotometer.  From tissue analysis, it indicates that the content of heavy metals lead (Pb) in 3 species of Shellfish which showed different results; Blood shells (Anadaragranosa) of 0.756 ppm, Hiatula shells (Hiatula chinensis) 1.59 ppm, and Shells (Siliqua winteriana) 1.171 ppm. Cadmium (Cd) metals in Shells are each found; Cockle shell (Anadara granosa) of 0.802 ppm, Hiatula shells (Hiatula chinensis) 0.334 ppm and Shells (Siliqua winteriana) 0.066 ppm. The content of lead metal (Pb) in the tissue of small mangrove leaves (Ryzophora apiculata) is 3.21 ppm and the mangrove leaves (Sonnerati aalba) is 3.74 ppm. For Cd levels in small mangrove leaves (Ryzophora apiculata) is 0.41 ppm while in mangrove leaves (Sonneratia alba) is 0.24 ppm

Analysis of Heavy Metals in Aceto Balsamico Tradizionale di Modena by Flame Atomic Absorption Spectroscopy

1994 ◽  
Vol 77 (3) ◽  
pp. 714-718 ◽  
Author(s):  
Fulvio Corradini ◽  
Luigi Marcheselli ◽  
Andrea Marchetti ◽  
Carlo Preti ◽  
Claudio Biancardi
Keyword(s):  
Heavy Metals ◽  
Atomic Absorption ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy ◽  
Metal Content ◽  
Flame Atomic Absorption Spectroscopy ◽  
Flame Atomic Absorption ◽  
Different Ages

Abstract A detailed investigation of Aceto Balsamico Tradizionale di Modena (ABTM) was carried out. The necessity of knowing the metal content of this original and widely used product is of great importance. Measurements were carried out on a large number of samples of different ages to check the dependence of metal content on product aging.

Bildung wasserlöslicher Histidin-Platin- Komplexe aus metallischem Platin und Histidin / Formation of Water Soluble Histidine Platinum Complexes from Metallic Platinum and Histidine

1988 ◽  
Vol 43 (4) ◽  
pp. 499-500 ◽  
Author(s):  
Eva Ehrenstorfer-Schäfers ◽  
Helmut Hartl ◽  
Wolfgang Beck
Keyword(s):  
Atomic Absorption ◽  
Absorption Spectroscopy ◽  
Atomic Absorption Spectroscopy ◽  
Platinum Complex ◽  
Platinum Complexes ◽  
Water Soluble ◽  
Oxygen Atmosphere ◽  
Metallic Platinum

AbstractMetallic Platinum dissolves under oxygen atmosphere in aqueous histidine solution. About 0.1 to 0.3 μmol of a water soluble histidine platinum complex per ml solution have been found by atomic absorption spectroscopy.

scholarly journals Studi Penurunan Kadar Logam Besi (Fe) dan Logam Tembaga (Cu) pada Air Embung Menggunakan Adsorben Nanosilika

2017 ◽  
Vol 17 (2) ◽  
pp. 131
Author(s):  
Emas Agus Prastyo Wibowo ◽  
Ika Sri Hardyanti ◽  
Isni Nurani ◽  
Dyan Septyaningsih Hardjono HP ◽  
Aden Dhana Rizkita
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Atomic Absorption ◽  
Water Use ◽  
Metal Content ◽  
Atomic Absorption Spectrophotometer ◽  
Absorption Method ◽  
Wastewater Purification ◽  
Stirring Time ◽  
Independent Variable

STUDI PENURUNAN KADAR LOGAM BESI (Fe) DAN LOGAM TEMBAGA (Cu) PADA AIR EMBUNG MENGGUNAKAN ADSORBEN NANOSILIKAABSTRAKPolusi limbah logam berat dalam air merupakan satu permasalahan lingkungan yang penting. Dalam mengatasi permasalahan tersebut dapat dilakukan purifikasi terhadap air tersebut. Metode yang dapat digunakan untuk purifikasi limbah sangat beragam salah satunya adalah absorpsi. Secara umum metode absorpsi telah banyak digunakan dalam purifikasi air limbah. Metode absorpsi dapat menurunkan kadar logam yang terlarut pada limbah. cair dengan cara menyerap logam-logam tersebut ke dalam permukaan absorbennya. Tujuan dilakukan penelitian ini adalah  untuk menurunkan konsentrasi logam besi (Fe) dan tembaga (Cu) menggunakan adsorben nanosilika. Penelitian ini menggunakan variabel bebas yaitu waktu pengadukan (20 menit, 40 menit, dan 60 menit). Hasil akhir filtrat air embung kemudian diukur absorbansinya menggunakan Spektrofotometer Serapan Atom. Berdasarkan hasil analisa menggunakan instrumen SSA diperoleh hasil bahwa tidak terjadi penurunan logam Fe maupun Cu. Dalam hal ini terjadi peningkatan konsentrasi dalam logam Fe maupun Cu, hal ini dikarenakan kurangnya waktu pengadukan dan pengaruh dari adsorben nanosilika.Kata Kunci: limbah, logam berat, nanosilika STUDY OF DECREASING METALS IRON (Fe) AND COPPER (Cu) ON EMBUNG WATER USE OF NANOSILICA ADSORBEN ABSTRACTHeavy waste pollution of heavy metals in the water is an important environment issue. To solve the problem, its can be purified the water. The methods that can be used for waste purification are very diverse, one of which is absorption. In general, the method of absorption has been widely used in wastewater purification. The absorption method can decrease dissolved metal content in the waste. liquid by absorbing the metals into the absorbent surface. Research has been conducted to reduce the concentration of iron (Fe) and copper (Cu) by using nanosilica adsorbent. This research used to independent variable that is stirring time (20 minutes, 40 minutes, and 60 minutes). The final result of filtrate embung water then measured its absorbance using Atomic Absorption Spectrophotometer (AAS). Based on the result of the analysis using SSA instrument, it is found that there is no decrease of Fe and Cu metals. There are several reasons for those problem such as due to lack of stirring time and the influence of nanosilica adsorbent.Keywords: Waste pollution, heavy metal, nanosilica

scholarly journals Impact Imposed by Urbanization on Soil Heavy Metal Content of Lake Wetland and Evaluation of Ecological Risks in East Dongting Lake in China

2021 ◽  
Author(s):  
Yang Lin ◽  
Kai Luo ◽  
Zilin Su ◽  
Yang Wu ◽  
Wei Xiao ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Land Use ◽  
Metal Content ◽  
Agricultural Land ◽  
Research Area ◽  
Dongting Lake ◽  
Heavy Metal Content ◽  
Ecological Risks ◽  
Positive Correlation

Abstract The urbanization is regarded as the major factor related to human activities that may interfere with the natural ecosystem. In this study, we have selected the wetland of East Dongting Lake as the research area. We have collected 180 soil samples (within the range of 0–20 cm, and 20cm-40cm), and we have measured the contents of their physicochemical properties (including salinity, pH value, soil particle composition, soil organic carbon, nitrate nitrogen and rapidly available phosphorus) as well as heavy metal elements (including As, Hg, Cd, Pb, Ni and Cr). We have adopted the methods of multivariate statistical analysis and inverse distance weighted (IDW) interpolation, so as to to reveal the sources and distribution characteristics of heavy metal content in soil in the research area. By adopting the potential ecological risk index (PERI) method proposed by Hakanson, we intend to assess the PERI values of heavy metals. Our research findings have shown that: (1) 8 sorts of heavy metals have shown positive correlation with each other. As, Hg and Zn have shown a significantly positive correlation with SOC (P < 0.01); As, Ni, Cr and Zn have shown a significantly positive correlation with AP (P < 0.01); As and Pb have shown a significantly positive correlation with Clay (P < 0.01); whereas Hg and Zn have shown a significantly negative correlation with Silt (P < 0.01); As and Pb have shown a significantly negative correlation with Sand (P < 0.01). (2) During urbanization, the elements of Cd, Ni, As, Hg and Pb might be enriched due to agricultural and industrial activities, whereas the use of fertilizers and pesticides constitute one of the major factors contributing to the increase of Cd and Pb contents in soil. (3) Influenced by the varying land patterns and with exception to Cu, the Fe-normalized concentrations have shown significant variations among different types of land use (P < 0.05). Specifically, there is a significantly higher level of Cd, Zn, Pb and Hg contents in the agricultural land than other types of land use, whereas there is a slightly higher level of heavy metal content in the mudflats than that in the grassland. In addition, the content of heavy metals in woodland remains relatively stable, and with exception to As, the content of heavy metals in woodland is the lowest among the five types of land. (4) The average value of the comprehensive PERI in heavy metals amounts to 555.03, representing a strong degree of ecological risks. Specifically, the proportion of sampling points of Cd that have a high level of ecological risks amounts to 36.51%, which is the primary element contributing to heavy metal pollution in the region, especially in the agricultural land.

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