A novel in situ method for sampling urban soil dust: Particle size distribution, trace metal concentrations, and stable lead isotopes

Bi, Xiangyang; Liang, Siyuan; Li, Xiangdong

doi:10.1016/j.envpol.2013.01.045

Cited by 102 publications

(32 citation statements)

References 38 publications

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“…The tendencies of Ca 2+ and Mg 2+ may explained by their source, soil dust. Soil dust has a much larger size distribution (Bi et al, 2013) than the droplets collected in stage 2 and stage 3, which meant if the soil dust participated in the cloud process, the larger droplets were more possible to contain soil dust components, and if the droplets were too small, it was less likely to find the soil dust elements inside. These results strongly suggested that the size distribution and chemical composition of CCN may be the causes of the chemical heterogeneity of droplets at Mt.…”

Section: Resultsmentioning

confidence: 99%

Chemical Composition and Bacterial Community in Size-Resolved Cloud Water at the Summit of Mt. Tai, China

Zhu

Chen

Wang

et al. 2018

Aerosol Air Qual. Res.

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A three-stage collector was used to collect size-resolved cloud samples at the summit of Mt. Tai. Subsequently, analyses of pH values, water-soluble ions, and trace metals were performed and bacterial community were conducted using MiSeq amplicon sequencing. The pH values of the samples decreased as droplet sizes decreased. Sulfate (SO 4 2-), nitrate (NO 3 -) and ammonium (NH 4 + ) were the main secondary inorganic ions which their concentration distributed significantly different from size-resolved cloud water. The NH 4 + concentration was higher in smaller droplets. The SO 4 2-and NO 3 -concentrations were higher in larger droplets. The Ca 2+ concentration increased as droplet size increased. Small droplet samples tended to have lower pH value, mainly because of the more acidic (SO 4 2-and NO 3 -) and less acid-neutralizing (NH 4 + and Ca 2+ ) components. The bacterial community in size-resolved cloud samples were firstly recognized and dominated by the genera of Lactococcus (average abundance 34.9%) and Bacillus (average abundance 34.0%). Linear discriminant analysis effect size (LEfSe) revealed differences of the bacterial community in size-resolved cloud water samples, which was probably caused by the bacterial size. Redundancy analysis suggested several minor correlations that the H 2 O 2 , NO 2 -concentrations, and trace metals exert effects on the bacterial community.

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Section: Resultsmentioning

confidence: 99%

Chemical Composition and Bacterial Community in Size-Resolved Cloud Water at the Summit of Mt. Tai, China

Zhu

Chen

Wang

et al. 2018

Aerosol Air Qual. Res.

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“…This may be related to the cation exchange capacity of the bentonite clay, in whose negative electrical charges the metals are adsorbed. According to Acosta et al (2009), Bi et al (2013), and Huang et al (2014) this is due to the higher specific surface area of the bentonites and Fe/Mn/aluminum oxides, characteristic of the same. According to Kemerich et al (2013), the elements Zn, Cu, Cd and Pb have a high affinity for the colloidal fraction of the soil and clays, forming, with the reactive surfaces of the clay, stable molecules that correspond to the specific adsorption, with high binding energy and stability.…”

Section: Resultsmentioning

confidence: 97%

“…Bentonite clay, being an anionic solid, has a remarkable affinity with metals, particularly heavy metals in solution (Bhattacharyya & Gupta, 2008), for example, copper. This element especially adsorbed by clays due to their higher surface area and Fe/Mn/aluminum oxides contents (Acosta et al, 2009;Bi et al, 2013;Huang et al, 2014), moves slowly in the soil, usually as an organic complex, and remains on the surface of the soil (Paganini et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Removal of Copper Ions from Aqueous Solution by Bentonite Clay Applied in Soil in Leaching Columns

Tito¹,

Chaves²,

Guerra³

et al. 2018

JAS

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The objective of this research was to evaluate the effect of bentonite applied in soil, on the removal of copper (Cu) from aqueous solutions, in leaching columns. The experiment was carried out at laboratory using leaching columns filled with 4 kg of soil mixed with bentonite according to treatments B0, B30, B60 and B90, that is, 0; 30; 60 and 90 t ha-1 of bentonite. Each leaching column (experimental unit) was constituted of a PVC tube, with 0.10m of diameter and 0.50m height sectioned in two 0.20 m rings (10-30 cm and 30-40 cm) and one, on the top, of 0.10 m high, reserved for a hydraulic head of 0.08 m. The columns were placed in a vertical support and saturated with distilled water by capillary ascension. Then percolation began, passing through the column five volumes of pores (initially four liters of water contaminated with 1000 mg of Cu and afterwards one liter of distilled water). Ten leached aliquots of 0.5 volume of pores were collected and stored in polypropylene flasks in a refrigerator for quantification of copper (Cu) by atomic absorption spectrophotometry. At the end of the tests, the solid material contained in each ring was collected and the Cu concentration determinated. Increasing doses of bentonite increased Cu retention in soil; Cu was more retained in the surface layer in all treatments; there was no copper leaching from the columns with 60 and 90 t ha-1 of bentonite application, indicating that all copper was retained in the soil avoiding thus potential risks for groundwater contamination.

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“…As a consequence, coal combustion has been identified as the principal source of Pb in Chinese urban environments since the elimination of leaded gasoline in 2000 (Cheng and Hu, 2010;Bi et al, 2013). On the basis of stable Pb isotope ratios, Li et al (2014a,b) demonstrated that Pb in house dust from both urban and rural areas of China mainly originated from coal combustion.…”

Section: Heating Typesmentioning

confidence: 97%

“…In the last few decades, huge amounts of metal/metalloid pollutants have been released from the growing industrial plume (Bollh€ ofer and Rosman, 2001;Bi et al, 2013;Luo et al, 2012;PeñaeFern andez et al, 2014) as well as natural sources (Argyraki and Kelepertzis, 2014). These hazardous pollutants pose a high risk to human health and our surrounding environments.…”

Section: Introductionmentioning

confidence: 97%

Lead in Chinese villager house dust: Geographical variation and influencing factors

Liu

Han³

et al. 2015

Environmental Pollution

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A novel in situ method for sampling urban soil dust: Particle size distribution, trace metal concentrations, and stable lead isotopes

Cited by 102 publications

References 38 publications

Chemical Composition and Bacterial Community in Size-Resolved Cloud Water at the Summit of Mt. Tai, China

Chemical Composition and Bacterial Community in Size-Resolved Cloud Water at the Summit of Mt. Tai, China

Removal of Copper Ions from Aqueous Solution by Bentonite Clay Applied in Soil in Leaching Columns

Lead in Chinese villager house dust: Geographical variation and influencing factors

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