Background values for evaluation of heavy metal contamination in sediments

Fukue, Masaharu; Yanai, Masahiro; Satō, Yoshio; Fujikawa, Teppei; Furukawa, Yasuhide; Tani, Shigeru

doi:10.1016/j.jhazmat.2005.11.020

Cited by 79 publications

(36 citation statements)

References 12 publications

(22 reference statements)

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“…In addition, as the velocity increased, particle- particle collision would become more frequent, facilitating the desorption of the labile fraction of heavy metals in SPM; (2) Particles which are smaller than 0.45 µm (the size of filter membrane in this study) entrained into the overlying water increased (Table 2). According to the previous study [16], finer particles tend to enrich more heavy metals than larger ones. Therefore, it is possible that heavy metals adsorbed onto particles (smaller than 0.45 µm) would result in an increase in dissolved phase, due to the fact that their passing through the filter membrane would be calculated as the dissolved fraction.…”

Section: Sediment and Overlying Water Characteristicsmentioning

confidence: 78%

Remobilization of heavy metals during the resuspension of Liangshui River sediments using an annular flume

Huang

Yang

et al. 2012

Chin. Sci. Bull.

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The release and transport of heavy metals (Ni, Cr, Cu and Pb) from Liangshui River sediments into the overlying water column during the resuspension event were determined using an annular flume with a velocity ranging from 0.15 to 0.35 m/s. It is shown that the suspended particulate matters (SPM) increased as much as nearly 25 times from 165 to 4220 mg/L as the velocity increased. Heavy metals showed an increase in dissolved phase as the velocity increased due to their desorption from the SPM. Acid-soluble heavy metals increased as the velocity increased, indicating that part of the heavy metals transformed from stable phase to labile phase during resuspension. Heavy metal concentrations in the SPM on volume normalization increased by approximately 2-6 times. However, on the mass weighted basis they decreased, approaching the bulk-sediment contents at high velocity, due to the "particle concentration effect". The distribution coefficients (K D ) of heavy metals were higher at slower velocity during the sediment resuspension, which could be attributed to the decrease of fine particles (silt/clay fraction) during resuspension.heavy metals, sediment resuspension, suspended particulate matters, acid-soluble heavy metals, annular flume Citation:Huang J Z, Ge X P, Yang X F, et al. Remobilization of heavy metals during the resuspension of Liangshui River sediments using an annular flume. Chin Sci Bull, 2012, 57: 35673572,

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Section: Sediment and Overlying Water Characteristicsmentioning

confidence: 78%

Remobilization of heavy metals during the resuspension of Liangshui River sediments using an annular flume

Huang

Yang

et al. 2012

Chin. Sci. Bull.

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“…The commonly used approach to establish the reference values is to compare the concentration of the target metals in contaminated and uncontaminated sediments that are mineralogically and texturally similar or identical (Fukue et al, 2006;Abrahim and Parker, 2008). Our previous study in this area showed that the average sedimentation rates were only 0.29, 0.69 cm y À1 for sites 8 and 7, respectively ).…”

Section: F4 Residuementioning

confidence: 99%

Comprehensive assessment of heavy metal contamination in sediment of the Pearl River Estuary and adjacent shelf

Yang¹,

Chen²,

Zhang³

et al. 2012

Marine Pollution Bulletin

229

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“…Increased concentrations of heavy metals are associated with the smaller size fraction (i.e., silt or clay) due to greater sorption capacity (Bengtsson and Picado 2008;Fukue et al 2006;Schuster 1991). In BBL-1, minimum Hg concentrations occurred at 52 cm (the base of core BBL-1), where sand, silt, and clay comprised 82, 17, and \1%, respectively.…”

Section: Big Bear Lakementioning

confidence: 99%

The impact of over 100 years of wildfires on mercury levels and accumulation rates in two lakes in southern California, USA

et al. 2009

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In southern California, USA, wildfires may be an important source of mercury (Hg) to local watersheds. Hg levels and Hg accumulation rates were investigated in dated sediment cores from two southern California lakes, Big Bear Lake and Crystal Lake, located approximately 40-km apart. Between 1895 and 2006, fires were routinely minimized or suppressed around Big Bear Lake, while fires regularly subsumed the forest surrounding Crystal Lake. Mean Hg concentrations and mean Hg accumulation rates were significantly higher in Crystal Lake sediments compared to Big Bear Lake sediments (Hg levels: Crystal Lake 220 ± 93 ng g -1 , Big Bear Lake 92 ± 26 ng g -1 ; Hg accumulation: Crystal Lake 790 ± 1,200 lg m -2 year -1 , Big Bear 240 ± 54 lg m -2 year -1 ). In Crystal Lake, the ratio between post-1965 and pre-1865 Hg concentrations was 1.1, and several spikes in Hg levels occurred between 1910 and 1985. Given the remote location of the lake, the proximity of fires, and the lack of point sources within the region, these results suggested wildfires (rather than industrial sources) were a continuous source of Hg to Crystal Lake over the last 150 years.

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Background values for evaluation of heavy metal contamination in sediments

Cited by 79 publications

References 12 publications

Remobilization of heavy metals during the resuspension of Liangshui River sediments using an annular flume

Remobilization of heavy metals during the resuspension of Liangshui River sediments using an annular flume

Comprehensive assessment of heavy metal contamination in sediment of the Pearl River Estuary and adjacent shelf

The impact of over 100 years of wildfires on mercury levels and accumulation rates in two lakes in southern California, USA

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