A baseline study on trace metals concentration and its ecological risk assessment from the coast of South Andaman Island, India

Sachithanandam, V.; Parthasarathy, P.; Elangovan, S. Sai; Kasilingam, K.; Dhivya, P.; Mageswaran, T.; Mohan, P. M.

doi:10.1016/j.rsma.2020.101242

Cited by 19 publications

(14 citation statements)

References 52 publications

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“…However, the highest concentration of As in the sediment of seagrass meadows were recorded from ANI. This higher concentration of As can be due to the volcanic origin of this island, where As enters the coastal ecosystem through seasonal land run-off, as these islands are far from industrially polluted (Nobi et al, 2010;Sachithanandam et al, 2020). Other than Arsenic, Co, Cr, Cu, Mg, Mn, Ni and Pb concentration in the sediment of seagrass meadows are the highest in ANI ( Table 2).…”

Section: Trace Metals In the Sediment Of Seagrass Meadowsmentioning

confidence: 97%

“…In the early 1990's, studies on trace element accumulation patterns in seagrasses of India started, when Jagtap, (1983) first reported about the trace element levels in the seagrass Halophila beccarii. Thereafter, in the last few decades considerable amount of data have been generated on trace elements in various seagrass species of India Nobi et al, 2010;Sachithanandam et al, 2020;Sudharsan et al, 2012a;Thangaradjou et al, 2013). However, these studies have focused on few locations of India; mostly in the Palk bay and Gulf of Mannar (GOM) region of Tamil Nadu and the islands of Lakshadweep and Andaman and Nicobar, even though seagrasses have a pan India distribution.…”

Section: Introductionmentioning

confidence: 99%

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Seagrass Ecosystems of India as Bioindicators of Trace Elements

Mishra¹,

Sahoo²,

Samantaray³

et al. 2020

Preprint

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Seagrasses are considered as efficient bioindicators of coastal trace element contamination. This chapter provides an overview on the trace element accumulation, tolerance and biomonitoring capacity of the various seagrass species distributed along the coast of India. A total of 10 trace elements are reported in seagrasses, 11 in sediment and nine in the water column from India. From the 11 seagrass species studied, 60% of research have focused on Syringodium isoetifolium, Cymodocea serrulata, Cymodocea rotundata and Halophila ovalis. 78% of seagrass trace element research in India is from Palk bay and Gulf of Mannar (GOM), Tamil Nadu and 16% from Lakshadweep Islands. Out of the 10 trace elements, Cd, Cu, Pb and Zn are the most studied in seagrass, Fe, Mn, Ni and Pb in sediment and Cu, Fe, Mg, Ni and Zn in the water column. Accumulation capacity of various trace elements in seagrass were species-specific. S. isoetifolium have the highest concentration of Cd and Mg at Palk bay and Lakshadweep Islands respectively. The concentration of Cu was higher in C. serrulata at GOM. Halodule uninervis and Halophila decipens have the highest concentration of Co, and Cr, Ni, Pb and Zn from Lakshadweep Islands. The highest concentration of Fe and Mn were highest in Halophila beccarii and H. ovalis from the coast of Goa and Palk bay respectively. Threshold levels (>10 mg L-1) of Cd, Cu, Pb and Zn were observed for C. serrulata, H. ovalis, H. uninervis and T. hemprichii, that can affect the Photo System -II of these seagrasses and exert cellular stress leading to seagrass loss and die-off. High concentration of these elements can exert negative impacts on seagrass associated trophic assemblages and ecosystem functioning. Seagrasses of India can be utilized as bioindicators of coastal trace element contamination but the associated toxicity and human health risks needs further investigation.

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Section: Trace Metals In the Sediment Of Seagrass Meadowsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Seagrass Ecosystems of India as Bioindicators of Trace Elements

Mishra¹,

Sahoo²,

Samantaray³

et al. 2020

Preprint

View full text Add to dashboard Cite

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“…The geo-accumulation index (I geo ), which compares the heavy metal(loid) contents of soils with background values, was used to quantify heavy metal(loid) pollution using the following equation [20,21]:…”

Section: Environmental Risk Assessmentmentioning

confidence: 99%

Heavy Metal(loid)s Pollution of Agricultural Soils and Health Risk Assessment of Consuming Soybean and Wheat in a Typical Non-Ferrous Metal Mine Area in Northeast China

Liu

et al. 2022

Sustainability

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During mining, some of the essential metal(loid)s for plants or humans are discharged into the environment with non-essential metal(loid)s. Thus, comprehensive investigations of their distribution and the health risk of consuming food crops near mines are significant. A total of 26 soils and 25 food crops (soybean grains and wheat grains) were sampled to investigate arsenic (As), cadmium (Cd), chromium (Cr), copper (Cu), mercury (Hg), lead (Pb), zinc (Zn), selenium (Se), molybdenum (Mo), and manganese (Mn) in soils and crops in a typical non-ferrous metal mine area in Northeast China. The distribution patterns of soil heavy metal(loid)s and principal component analysis (PCA) results indicated that Cd, Cu, Zn, Mo, and Mn in soils were significantly affected by mining activities and were mainly or partly derived from the mines. Moreover, these soil heavy metal(loid)s (except Se) in the Tongshan copper mine area were attenuated with distance in the downstream direction. The BCF (bioconcentration factor) values of non-essential elements (Se, Hg, Cr, As, Cd, Pb) were relatively lower and positively related to soil nutrients. On the contrary, higher BCF values of essential elements (Cu, Zn, and Mo) and a weak relationship between the BCF of essential elements and soil nutrients were found. The mean Igeo values of soil heavy metal(loid)s indicated that As and Cu were at an unpolluted-to-moderately-polluted level (Igeo > 1), while other heavy metal(loid)s all presented an unpolluted level (Igeo < 1). Nevertheless, some soil samples were obviously polluted (Igeo > 1), such as KQ, D1, D3, D5, D6, and T1. The HQ (hazard quotient) and HI (hazard index) values of As and Mn both exceeded 1, indicating the higher potential health risks of consuming soybean grains and wheat grains for all people groups.

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“…Urban soils become enriched with heavy metals, either by geological or anthropogenic factors. However, the contribution of anthropogenic factors is often reported to be dominant, due to rapid urbanization [1][2][3][4]. Common anthropogenic sources include traffic emissions, industrial activities, such as power generation and waste management practices, and domestic fuel combustions [5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Heavy Metals in Soil and Sand from Playgrounds of Çanakkale City (Turkey), and Related Health Risks for Children

2022

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Children spend most of their time in playgrounds and, in parallel, constitute the social group most sensitive to contaminants. Here, we present the results of a comparative study of heavy-metal contents between soils and sand from sandboxes obtained from playgrounds of Çanakkale city. Average contents of soils followed the order of iron (Fe) (12,901 mg kg−1) > manganese (Mn) (475 mg kg−1) > zinc (Zn) (58 mg kg−1) > copper (Cu) (28 mg kg−1) > nickel (Ni), chromium (Cr) (21 mg kg−1) > lead (Pb) (18 mg kg−1). Sand had lower contents, however, due to the reduction of particles size through prolonged use, and accumulation of Fe/Mn (oxyhydr)oxides on sand grains tended to diminish the differences between soils and sand. Through chemometric analysis, Cr and Ni were found to have a lithogenic origin, while the rest of metals were related to anthropogenic activities. Spatially, heavy-metal contents followed the pattern of the city’s sprawl. Risk estimates on children’s health showed that ingestion was the most important exposure route, followed by dermal contact and inhalation. Exposure of children to sand was of similar importance to that of soils. These findings are significant, as the contamination of sand has not yet received much attention compared to the soil of playgrounds.

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A baseline study on trace metals concentration and its ecological risk assessment from the coast of South Andaman Island, India

Cited by 19 publications

References 52 publications

Seagrass Ecosystems of India as Bioindicators of Trace Elements

Seagrass Ecosystems of India as Bioindicators of Trace Elements

Heavy Metal(loid)s Pollution of Agricultural Soils and Health Risk Assessment of Consuming Soybean and Wheat in a Typical Non-Ferrous Metal Mine Area in Northeast China

Heavy Metals in Soil and Sand from Playgrounds of Çanakkale City (Turkey), and Related Health Risks for Children

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