scholarly journals The effectiveness of soaking duration on blood cockles (Anadara granosa) with activated charcoal towards reducing metals lead (Pb)

2021 ◽  
Vol 4 (3) ◽  
pp. 304-308
Author(s):  
Anak Agung Istri Mas Padmiswari ◽  
Nadya Treesna Wulansari ◽  
Ni Wayan Sukma Antari ◽  
Ida Ayu Manik Damayanti ◽  
Putu Indrayoni ◽  
...  
Keyword(s):  
Activated Charcoal ◽  
Inductively Coupled Plasma ◽  
Sea Water ◽  
Pollution Level ◽  
Inductively Coupled ◽  
Selective Filter ◽  
Parametric Data ◽  
Filter Water ◽  
Blood Cockle ◽  
Anadara Granosa

Blood cockle (Anadara granosa) is one of the marine biotas that can be used as a bioindicator of the pollution level of sea water. The nature of blood cockle stays in one place because of their slow movement and they are non-selective filter feeders which filter water in order to get food. The use of activated charcoal during soaking is to keep the food safety from blood cockle contaminated with heavy metals. The purpose of this study is to determine the effectivity test of soaking duration on blood cockle (Anadara granosa) and activated charcoal toward reducing metals lead (Pb). This study employed Randomized Complete Design (RCD) using three different soaking periods such as 30 minutes, 60 minutes, and 90 minutes. The samples were analyzed by Inductively Coupled Plasma Emission (ICPE). The parametric data was analyzed with One Way Anova test. The result of the study showed that the soaking duration among 30 minutes, 60 minutes, and 90 minutes in activated charcoal showed significantly different (P< 0.05) toward the levels of lead.

scholarly journals The Survival of Haloferax mediterranei under Stressful Conditions

2021 ◽  
Vol 9 (2) ◽  
pp. 336
Author(s):  
Laura Matarredona ◽  
Mónica Camacho ◽  
Basilio Zafrilla ◽  
Gloria Bravo-Barrales ◽  
Julia Esclapez ◽  
...  
Keyword(s):  
Inductively Coupled Plasma ◽  
Sea Water ◽  
Industrial Applications ◽  
Growth Responses ◽  
Haloferax Mediterranei ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Wide Range ◽  
High Metal ◽  
Plasma Mass Spectrometry

Haloarchaea can survive and thrive under exposure to a wide range of extreme environmental factors, which represents a potential interest to biotechnology. Growth responses to different stressful conditions were examined in the haloarchaeon Haloferax mediterranei R4. It has been demonstrated that this halophilic archaeon is able to grow between 10 and 32.5% (w/v) of sea water, at 32–52 °C, although it is expected to grow in temperatures lower than 32 °C, and between 5.75 and 8.75 of pH. Moreover, it can also grow under high metal concentrations (nickel, lithium, cobalt, arsenic), which are toxic to most living beings, making it a promising candidate for future biotechnological purposes and industrial applications. Inductively Coupled Plasma Mass Spectrometry (ICP-MS) analysis quantified the intracellular ion concentrations of these four metals in Hfx. mediterranei, concluding that this haloarchaeon can accumulate Li+, Co2+, As5+, and Ni2+ within the cell. This paper is the first report on Hfx. mediterranei in which multiple stress conditions have been studied to explore the mechanism of stress resistance. It constitutes the most detailed study in Haloarchaea, and, as a consequence, new biotechnological and industrial applications have emerged.

On-Line Trace Enrichment and Determination of Uranium in Waters by Flow Injection Inductively Coupled Plasma Mass Spectrometry

1994 ◽  
Vol 48 (11) ◽  
pp. 1331-1336 ◽  
Author(s):  
Shayessteh Dadfarnia ◽  
Cameron W. McLeod
Keyword(s):  
Mass Spectrometry ◽  
Flow Injection ◽  
Inductively Coupled Plasma ◽  
Sea Water ◽  
Trace Enrichment ◽  
Inductively Coupled ◽  
Plasma Mass Spectrometry ◽  
On Line ◽  
Line Trace

A flow injection system incorporating a microcolumn of activated alumina was combined with inductively coupled plasma mass spectrometry for on-line trace enrichment and determination of uranium in surface waters and sea water. Deposition of uranium was effected with the use of a basic alumina microcolumn, and injection of nitric acid (250 μL, 2M) served to elute retained species to the ICP. A sample volume of 14 mL resulted in a preconcentration factor of 40, and precision at the 50-ng 1−1 level was 4.5% (RSD). The procedure was applied to mineral waters, river water, and sea water, and accuracy was assessed through either analysis of certified reference waters or recovery experiments.

scholarly journals Heavy metal incorporation in foraminiferal calcite: results from multi-element enrichment culture experiments with <i>Ammonia tepida</i>

2010 ◽  
Vol 7 (8) ◽  
pp. 2339-2350 ◽  
Author(s):  
D. Munsel ◽  
U. Kramar ◽  
D. Dissard ◽  
G. Nehrke ◽  
Z. Berner ◽  
...  
Keyword(s):  
North Sea ◽  
Inductively Coupled Plasma ◽  
Partition Coefficients ◽  
Sea Water ◽  
Enrichment Culture ◽  
Analytical Techniques ◽  
Large Variability ◽  
Inductively Coupled ◽  
Icp Ms ◽  
Element Enrichment

Abstract. The incorporation of heavy metals into carbonate tests of the shallow water benthic foraminifer Ammonia tepida was investigated under controlled laboratory conditions. Temperature, salinity, and pH of the culture solutions were kept constant throughout the duration of this experiment, while trace metal concentrations were varied. Concentrations of Ni, Cu, and Mn were set 5-, 10-, and 20 times higher than levels found in natural North Sea water; for reference, a control experiment with pure filtered natural North Sea water was also analysed. The concentrations of Cu and Ni from newly grown chambers were determined by means of both μ-synchrotron XRF and Laser Ablation Inductively Coupled Plasma Mass Spectroscopy (LA-ICP-MS). The results of both independent analytical techniques agreed within the analytical uncertainty. In general, the concentration of the analysed elements in the tests increased in line with their concentration in the culture solutions. Potential toxic and/or chemical competition effects might have resulted in the decreased incorporation of Ni and Cu into the calcite of the specimens exposed to the highest elemental concentrations. Mn incorporation exhibited large variability in the experiment with the 20-fold increased element concentrations, potentially due to antagonistic effects with Cu. The partition coefficients of Cu and Ni were calculated to be 0.14 ± 0.02 and 1.0 ± 0.5, respectively, whereas the partition coefficient of Mn was estimated to be least 2.4. These partition coefficients now open the way for reconstructing past concentrations for these elements in sea water.

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