Determination of the background ranges of trace metals in the brown alga Sargassum pallidum from the Northwestern Sea of Japan

Chernova, E. N.

doi:10.1134/s1063074012030030

Cited by 13 publications

(4 citation statements)

References 7 publications

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“…Me 15 ± 2MAD 15 , a median of microelement concentrations from 15% of the least values of the sampling (Table 2) was calculated to distinguish the properly natural background concentrations of microelements in the macrophytes. A value of Me 15 − 2MAD 15 is the lower threshold level of the background concentrations (Chernova, 2012) because it is close to the minimum concentration of microelement in the hydrobionts under geochemical and hydrological conditions of this region (Table 2).…”

Section: Resultsmentioning

confidence: 82%

“…The method of calculation of the threshold value as median plus double median of absolute deviations from the median (Med + 2МАD) and background (median) was used in the samples of algae (Chernova, 2012;Chernova & Kozhenkova, 2016). In this work, the threshold concentrations of metals in Costaria costata were calculated, and those in Stephanocystis crassipes were refined.…”

Section: Resultsmentioning

confidence: 99%

“…To distinguish the lower background threshold of an element concentration in algae (considered as the minimum physiological level), the values of Ме 15 − 2MAD 15 were calculated for 15% of the least values in a sampling. The range of Ме 15 ± 2MAD 15 was taken as the physiologically needed amount of an element in algae, comparable to the natural background range as such under minimum anthropogenic impact compared to the background range calculated using Ме ± 2МАD values, which does not exclude the anthropogenic component (Chernova, 2012).…”

Section: Methodsmentioning

confidence: 99%

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Background Concentrations of Heavy Metals in Brown Algae from the Northwest Sea of Japan

Chernova¹,

Kozhenkova²

2020

GEP

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Background concentrations of Fe, Mn, Cu, Zn, Pb, Cd, and Ni were calculated for brown algae Costaria costata from the northwest Sea of Japan. Also the paper contains refined data on heavy metal concentrations in the widespread distributed brown algae, such as Stephanocystis crassipes, Sargassum pallidum and S. miyabei. As the upper threshold levels of metal background concentrations, the median values plus double medians of absolute deviations from the medians were used (Me + 2MAD). The lower threshold level of the background concentration equal to the physiological need for an element is the median of 15% minimum values in the sampling minus the double median of absolute deviations from the median (Me 15 − 2MAD 15 ). The calculated ranges of the background concentrations of metals in algae were compared with concentrations of elements in macrophytes collected from habitats with background concentrations of metals in water.

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Section: Resultsmentioning

confidence: 82%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Background Concentrations of Heavy Metals in Brown Algae from the Northwest Sea of Japan

Chernova¹,

Kozhenkova²

2020

GEP

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“…Based on the study of C. Reinmann with coauthors ( 2005), we have calculated the background and threshold heave metal concentrations in algae of the coastal part of the Sea of Japan (Chernova, 2012;Chernova & Kozhenkova, 2016), as well as for Okhotsk Sea, White Sea and South China Sea (Chernova & Khristoforova, 2012).…”

Section: S Kozhenkova E Chernova Journal Of Geoscience and Environment Protectionmentioning

confidence: 99%

Assessment of Heavy Metal Pollution of the Peter the Great Bay (North-West Pacific Region) Using Brown Algae

Kozhenkova¹,

Chernova²

2020

GEP

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According to the content of heavy metals Fe, Mn, Cu, Zn, Pb, Cd and Ni in brown algae Sargassum miyabei from the Peter the Great Bay of the Sea of Japan, geochemical factors were calculated. The algae geochemical anomaly index (I GA ) characterizes the degree of excess of the background concentrations of metals. The heavy metal pollution factor (F p ) is used to estimate the degree of pollution of the marine environment with heavy metals. The Peter the Great Bay has a low level of heavy metal pollution, but some parts of second-order bays, such as Amurskii Bay, Ussuriiskii Bay and Vostok Bay, have a moderate degree of pollution. The high pollution level was registed on the western coast of the Ussuriiskii Bay near the Vladivostok city landfill. Thirty percent of sampling stations were noted to have higher threshold levels of metals in the algae. These areas need to be monitored to assess their environmental status and measures should be applied to reduce the impact on the environment.

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Assessment of trace metal in macroalgae and sediment of the Sundarban mangrove estuary

et al. 2020

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This study was carried out to assess the levels of trace metals (Fe, Zn, Mn and Cu) in the macroalgae and sediment of the Sundarban mangrove estuary in Bangladesh. In this connection, macroalgae, water and sediment samples were collected seasonally (pre-monsoon, monsoon and post-monsoon) for a year from the study area. The surface water of the estuary was found to be quite rich in NO 3 , PO 4 and NH 4 , which is more than that of the sediment pore water. Trace elements were determined using an atomic absorption spectrophotometer. The amount of trace metals in the samples were found in the order of Fe > Mn > Zn > Cu. Enrichment factor was done for trace metals in sediment and showed non-crustal origin of Zn and Cu in the monsoon period. Analysis of variance revealed the seasonal variation of trace metal concentration in sediment (except Mn; p > 0.05) and macroalgae (except Zn; p > 0.05). Iron in sediment showed significant positive correlation both with Fe (r = 0.84, p < 0.05) and Mn (r = 0.87, p < 0.01) in macroalgae. Similarly, Cu in sediment demonstrated a significant positive correlation with Cu in macroalgae (r = 0.81, p < 0.01). The findings reveal a significant communication of metals in sediment and macroalgae.

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Determination of the background ranges of trace metals in the brown alga Sargassum pallidum from the Northwestern Sea of Japan

Cited by 13 publications

References 7 publications

Background Concentrations of Heavy Metals in Brown Algae from the Northwest Sea of Japan

Background Concentrations of Heavy Metals in Brown Algae from the Northwest Sea of Japan

Assessment of Heavy Metal Pollution of the Peter the Great Bay (North-West Pacific Region) Using Brown Algae

Assessment of trace metal in macroalgae and sediment of the Sundarban mangrove estuary

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