Evaluation of the status and distributions of heavy metal pollution in surface sediments of the Langat River Basin in Selangor Malaysia

Kadhum, Safaa A.; Ishak, Mohd Yusoff; Zulkifli, Syaizwan Zahmir; Hashim, Rohasliney

doi:10.1016/j.marpolbul.2015.10.012

Cited by 34 publications

(9 citation statements)

References 13 publications

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“…The mean concentrations of heavy metals were compared with previous studies on some rivers worldwide, including the Ganga [17] and the Gomti in India [47], the Korotoa in Bangladesh [48], the Langat in Malaysia [49], the Huaihe [32] and Jialu in China [33], the Shur in Iran [50], and the Tigris in Turkey [30] ( Table 3). The concentrations of Zn and Cu in large rivers, including the Tigris and Shur -where pollution is associated with major metal industry exceeding the concentrations in the present study.…”

Section: Comparisons With Previous Studiesmentioning

confidence: 99%

Assessing Heavy Metal Contamination in Surface Sediments in an Urban River in the Philippines

Decena¹,

Arguilles²,

Robel³

2018

Pol. J. Environ. Stud.

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Heavy metal contamination is a current and major environmental concern worldwide due to anthropogenic activities [1-2]. Heavy metal contamination in the environment has been occurring for centuries, and in the last decade it has increased rapidly due to technological developments [3]. Anthropogenic activities that result in the discharge of heavy metals into the environment include industrial processes, mining, automobile emissions, agricultural, wastewater discharge, and urban runoff [4-5], while the natural sources of heavy metals may include weathering and dissolution of minerals, parent rocks, and soils [6-8]. Aquatic ecosystems like rivers are sinks of pollutants [9], probably because rivers as open systems are more vulnerable to contamination due to anthropogenic

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Section: Comparisons With Previous Studiesmentioning

confidence: 99%

Assessing Heavy Metal Contamination in Surface Sediments in an Urban River in the Philippines

Decena¹,

Arguilles²,

Robel³

2018

Pol. J. Environ. Stud.

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“…Heavy metals are the most prevalent pollutants and are generally the most common and severe in urban river sediments (Zhang et al 2012;Islam et al 2015). Kadhum et al (2015) evaluated the metal concentrations in the surface sediments of the Langat River and found high levels for four heavy metals: Sn, 114 mg/kg; Cr, 21 mg/kg; Ni, 7.8 mg/kg; Cd, 0.59 mg/kg. In the past decade, the concentrations of Pb, Zn, Cd, Cu and Cr have increased in sediments from Swan Lake and Rongcheng Bay in the northern Yellow Sea due to fluvial transport, direct domestic discharge, industrial effluents and atmospheric deposition (Huang et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Bioelectricity generation by wetland plant-sediment microbial fuel cells (P-SMFC) and effects on the transformation and mobility of arsenic and heavy metals in sediment

Zhu

Zhang

Zhu

et al. 2019

Environ Geochem Health

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“…Accumulation of heavy metals in soil is one of the most significant environmental problems (Sabiha‐Javied & Tufail ; Kadhum et al . ; Tripathi et al . ).…”

Section: Introductionmentioning

confidence: 99%

Intermittent lead‐induced stress on antioxidant enzyme activity and subcellular distribution of Pb in Pogonatherum crinitum seedlings

et al. 2019

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Pogonatherum crinitum is a promising lead (Pb) hyperaccumulator due to its high Pb tolerance and accumulation ability. However, the mechanisms that support Pb accumulation and tolerance in P. crinitum are not yet clearly understood.• An indoor hydroponic experiment was conducted by cultivating P. crinitum seedlings exposed to intermittent Pb stress for 60 days, divided into four stages (T1, T2, T3 and T4), with a 15-day duration per stage. The following concentrations of Pb were used: 0, 500, 0, 500 mgÁl À1 and 0, 1000, 0, 1000 mgÁl À1 ). Antioxidant enzyme activity, Pb concentration and subcellular distribution of Pb were measured at each of the above stages.• The results showed that superoxide dismutase (SOD) activity in shoots, and SOD, peroxidase (POD) and malondialdehyde (MDA) activity in shoots and roots significantly increased from T1 (no Pb stress) to T2 (Pb stress) in both 500 mgÁl À1 and 1000 mgÁl À1 treatments; however, no significant difference was noted between stages T3 (no Pb stress) and T4 (Pb stress). There was no obvious effect of Pb stress on catalase (CAT) activity in shoots and roots among different stages. The Pb concentration in shoots was up to 5090.90 mgÁkg À1 and 7573.57 mgÁkg À1 , and the bioconcentration factor (BFC) was 10.18 and 7.57 for the 500 mgÁl À1 and 1000 mgÁl À1 treatments, respectively, which confirmed the Pb hyperaccumulator characteristics of P. crinitum. For plants under Pb stress, most of the Pb was fixed in the cell walls, with a smaller amount in leaves and root vacuoles.• Both SOD and POD scavenging of reactive oxygen radicals and fixing and compartmentalisation of Pb in the cell wall might play important roles in detoxification of P. crinitum seedlings in response to Pb stress. There was no phased response of P. crinitum to intermittent Pb stress and the physiological response to Pb stress may be contiguous.Plant Biology 21 (2019) 634-642

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Evaluation of the status and distributions of heavy metal pollution in surface sediments of the Langat River Basin in Selangor Malaysia

Cited by 34 publications

References 13 publications

Assessing Heavy Metal Contamination in Surface Sediments in an Urban River in the Philippines

Assessing Heavy Metal Contamination in Surface Sediments in an Urban River in the Philippines

Bioelectricity generation by wetland plant-sediment microbial fuel cells (P-SMFC) and effects on the transformation and mobility of arsenic and heavy metals in sediment

Intermittent lead‐induced stress on antioxidant enzyme activity and subcellular distribution of Pb in Pogonatherum crinitum seedlings

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