Heavy metals and trace elements in atmospheric fall-out: Their relationship with topsoil and wheat element composition

Bermúdez, Gonzalo Miguel Ángel; Jasan, Raquel; Plá, Rita; Pignata, María Luisa

doi:10.1016/j.jhazmat.2012.02.023

Cited by 164 publications

(56 citation statements)

References 48 publications

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“…Arsenic compounds have been identified as Group-I carcinogens, which can enter the human body through respiration, ingestion, and skin absorption (Liu et al, 2007). Arsenic poisoning cases have been reported in various areas of the world since they were able to form stable compounds that could be bio-accumulated in living organisms and affect their immune system (Duker et al, 2005;Sanchez-Rodas et al, 2007;Serbula et al, 2010;Bermudez et al, 2012). Arsenics is not only considered as a carcinogen, but has also been shown to have harmful effects on the bladder, liver, kidney, and lung, and cause several non-cancer diseases, such as diabetes mellitus, hypertension and coronal heart disease (Englyst et al, 2001;Cantor and Lubin, 2007;CoronadoGonzalez et al, 2007;Boamponsem et al, 2010;Fang et al, 2012b).…”

Section: Introductionmentioning

confidence: 99%

Atmospheric Arsenic Deposition in Chiayi County in Southern Taiwan

Lin

et al. 2013

Aerosol Air Qual. Res.

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Although arsenic contamination of underground water in southern Taiwan is well known, few studies examine atmospheric arsenic deposition in this area, which might be the major source of such pollution to the soil, water, and even underground water. This research focused on the atmospheric arsenic concentration, dry and wet depositions, and the As distribution around Chiayi County, located in the south of Taiwan. Eight sampling sites are used, both upwind and downwind of an area with heavy industrial and human activities. All samples were collected by a PS-1 high volume sampler at each site, pretreated by a digestion process, and further analyzed with an ICP-MS. The results show that the arsenic deposition flux ranged from 65.0 to 473 μg/m 2 -month in Chiayi County. This deposition flux has no significant seasonal variation, based on the multiple trend results obtained from pooling the dry and wet deposition data. The average dry deposition flux of As ranged from 34 to 161 μg/m 2 -month during the sampling year, and had the opposite trend to the wind speed. Additionally, the correlations between atmospheric arsenic concentration and PM levels were significant, supported by the low p-value (< 0.01) at a 99% confidence level. Meanwhile, the highly linear correlation between As and PM concentrations was also evaluated. The amount of precipitation was statistically correlated to the wet deposition flux (11.3-414 μg/m 2 -month with a p-value = 2 × 10 -7 and r-value = 0.9306. Furthermore, the composition of the As mass concentrations in ambient air were dominated by As (V) in both fall (66.4%) and winter (68.9%). According to the GIS spatial analysis of the As concentration in the dry season, from October to March, the As contribution of local emissions were not significant. Consequently, this study indicates that the atmospheric As around Chiayi County might be sourced from the upwind northern area, and mainly deposited through wet scavenging.

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Section: Introductionmentioning

confidence: 99%

Atmospheric Arsenic Deposition in Chiayi County in Southern Taiwan

Lin

et al. 2013

Aerosol Air Qual. Res.

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“…Agricultural ecosystem has a close relation with human health; hence, heavy metal pollution of agricultural ecosystem has been of attention throughout the world (Pandey and Pandey, 2008;Bermudez et al, 2012). Heavy metals are extremely toxic, non-degradable and bio-accumulative.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Al3+ and Hg2+ on Glucose 6-Phosphate Dehydrogenase From Capoeta Umbla Kidney

Kırıcı¹

2016

Appl Ecol Env Res

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Abstract. Glucose 6-phosphate dehydrogenase (EC 1.1.1.49; G6PD) is an important enzyme found in all mammal tissues, and produces NADPH in the metabolism. NADPH provides a reductive potential to maintain a balanced redox state within the cell. The aim of this study was to purify G6PD from Capoeta umbla kidney and determination of inhibition or activation effects of aluminium and mercury on enzyme activity. In this purpose, glucose 6-phosphate dehydrogenase was purified from Capoeta umbla kidney by using preparation of homogenate, ammonium sulphate precipitation and 2',5'-ADP Sepharose 4B affinity chromatography. Molecular weight of the enzyme was determined on sodium dodecyl sulphatepolyacrylamide gel electrophoresis (SDS-PAGE) and the purified enzyme showed a single band on the gel with a molecular weight of 75 kDa. Moreover, K i constants of Al 3+ and Hg 2+ were found as 0.98 ± 0.084 and 0.57 ± 0.019 mM, respectively. In conclusion, affinity of the Hg 2+ to the enzyme was higher than Al 3+

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“…Nickel (Ni) is a heavy metal naturally occurring in concentrations of 100 mg kg -1 and 0.005 mg L -1 , in soil and water respectively (Chen et al, 2009;Bermudez et al, 2012). Soils derived from serpentine rocks are rich in Ni.…”

Section: Introductionmentioning

confidence: 99%