Present state and historical changes of trace metal pollution in Kaoping coastal sediments, southwestern Taiwan

Hung, Jia‐Jang; Hsu, C.-L.

doi:10.1016/j.marpolbul.2004.06.028

Cited by 82 publications

(32 citation statements)

References 21 publications

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“…Strong positive correlation were observed for Cu, Zn, Pb, Cr and Fe, indicating that these metals are associated with each other and may have a common anthropogenic and natural sources in the sediments of the PRE. Good to strong correlations between Pb, Zn, Cr, Fe and the fine-grained fraction (r = 0.498, 0.562, 0.608 and 0.694, respectively) and strong correlations between Cu, Zn, Pb, Cr, Fe and TOC (r = 0.789, 0.850, 0.792, 0.755 and 0.645, respectively) suggest that both fine sediment and TOC are important carriers for these metals (Hung and Hsu, 2004). However, the fine-grained fraction exhibited nonsignificant positive relationships with Cu and Ni, implying that the concentration of trace metals in sediments cannot be interpreted simply by a change in grain size (Ip et al, 2007).…”

mentioning

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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mentioning

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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“…For a better estimation of anthropogenic input, an enrichment factor was calculated for each metal by dividing its ratio to the normalizing element by the same ratio found in the chosen baseline. Enrichment Factor (EF) values are applied to evaluate the dominant source of the sediments and as indicators for pollution (Hung and Hsu, 2004;Mil-Homens et al, 2007) and described as EF = (E/Al) sed /(E/Al) crust where (E/Al) sed /(E/Al) crust are the relative concentrations of the respective element E and Al in the sediment and in the crustal material, respectively (Prudencioa et al, 2007;Zhang et al, 2007). Enrichment Factor (EF) values close to 1 point to a crustal origin, while those with a factor more than 10 are considered to have a non-crustal source.…”

Section: Resultsmentioning

confidence: 99%

Heavy Metals Concentration in Surficial Sediments of Bidong Island, South China Sea off the East Coast of Peninsular Malaysia

Ong¹,

Joseph²,

Shazili³

et al. 2015

Asian J. of Earth Sciences

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The distribution, enrichment and accumulation of heavy metals in the surficial sediments of Bidong Island, South China Sea East Coast of peninsular Malaysia were investigated. dry weight), respectively. All metals studied have relatively low Enrichment Factor (EF) values and index of geo-accumulation (I geo ) in the study area. Overall, the geochemistry of the sediment of Bidong Island was influenced by both natural and anthropogenic inputs to the catchment. However, direct comparison with earth crust values and normalization to Al indicated that natural processes were more dominant than anthropogenic inputs in concentrating metals.Key words: Enrichment, accumulation, enrichment factor, index of geoaccumulation, anthropogenic INTRODUCTIONPollution by heavy metals in natural environments has become a global problem (Irabien and Velasco, 1999). It has been recognized for many years that the concentrations of metals found in coastal areas, whether they are in the dissolved or particulate phase may be derived from a variety of anthropogenic and natural sources (Burridge et al., 1999). Heavy metals are of considerable environmental concern due to their toxicity, wide range of sources, nonbiodegradable properties and accumulative behaviors. With the rapid industrialization and economic development in coastal regions, heavy metals are continuing to be introduced to estuarine and coastal environment through rivers, runoff and land-based point sources where metals are produced as a result of metal refinishing by-products. In most circumstances, the major part of the anthropogenic metal load in the sea and sea bed sediments and organisms has a terrestrial source from mining and intensive aquaculture and municipal wastewaters, untreated effluents, harbor activities, urban and agricultural runoff along major rivers and estuaries and bays (Dalman et al., 2006).When metals enter the marine environment, most of them will settle down and be incorporated into sediments together with organic matter, Fe/Mn oxides, sulfides and clay (Wang and Chen, 2000). Marine sediments act as scavengers for trace metals and often provide an excellent proof of

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“…Hung and Hsu (2004) reported that carbon-dioxide quickly combines with water form carbonic acid, a weak acid. Thus the presence of carbon-dioxide in water may have negative effects depending on the water pH.…”

Section: Resultsmentioning

confidence: 99%

“…However, the mean values of values for cadmium (0.09 -0.23 ppm) and iron (1.38 -3.63 ppm) were above the set limits of 0.003 and 0.30 ppm, respectively. Florea and Busselberg (2006) and Hung and Hsu (2004) reported that some trace elements are potentially toxic. Zinc and copper are essential elements for the maintenance of the body's metabolic activities but copper contaminated water could pose health hazards such as abdominal pains, nausea, vomiting, diarrhoea, headache and dizziness as reported by Chinwe et al (2010).…”

Section: Resultsmentioning

confidence: 99%

Assessment of chemical and bacteriological quality of pipe-borne water from various locations in Delta State University, Abraka, Nigeria

Okoko¹,

Idise²

2014

Afr. J. Microbiol. Res.

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Eighteen samples, consisting of six samples each, from three different locations that were 250, 500 and 750 away from the drinking water source in Delta State University, Abraka Campus, were collected and analyzed for their microbial and chemical quality using standard methods. Total viable counts were carried out using the pour plate method, while the most probable number was determined with the multiple tube fermentation technique. The total viable counts increased with distance away from the water source and were high for all the water samples, exceeding the 2.0 Log 10 cfu/ml set limit for drinking water. The isolated organisms were Micrococcus sp., Chromobacterium sp., Streptococcus sp., Pseudomonas aeruginosa and Staphylocosus aureus. Chemical parameters analyzed were pH, chloride, alkalinity, carbon-dioxide, calcium, magnesium, zinc, iron, copper, potassium, total hardness, total dissolved solids, total suspended solids and total solids. The results obtained from each parameter were compared with the quality standard for drinking water laid down by the World Health Organisation and Federal Environmental Protection Agency (FEPA), Nigeria. The analyses revealed that there were increases in some of the parameters with distance away from the water source while some of the parameters studied were within the approved standard, others were above or below. It is thus imperative for our drinking water to be properly treated prior to consumption.

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Present state and historical changes of trace metal pollution in Kaoping coastal sediments, southwestern Taiwan

Cited by 82 publications

References 21 publications

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

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

Heavy Metals Concentration in Surficial Sediments of Bidong Island, South China Sea off the East Coast of Peninsular Malaysia

Assessment of chemical and bacteriological quality of pipe-borne water from various locations in Delta State University, Abraka, Nigeria

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