The Experts below are selected from a list of 1170 Experts worldwide ranked by ideXlab platform
Baoshan Xing - One of the best experts on this subject based on the ideXlab platform.
-
an investigation of inorganic antimony species and antimony associated with soil humic acid molar mass fractions in contaminated soils
Environmental Pollution, 2007Co-Authors: Sarah Steely, Dulasiri Amarasiriwardena, Baoshan XingAbstract:The presence of antimony compounds is often suspected in the soil of apple orchards contaminated with Lead Arsenate pesticide and in the soil of shooting ranges. Nitric acid (1M) extractable Sb from the shooting range (8300 microg kg(-1)) and the apple orchard (69 microg kg(-1)) had considerably higher surface Sb levels than the control site (<1.5 microg kg(-1)), and Sb was confined to the top approximately 30 cm soil layer. Sb(V) was the principal species in the shooting range and the apple orchard surface soils. Size exclusion chromatography-inductively coupled plasma-mass spectrometry (SEC-ICP-MS) analysis of humic acids isolated from the two contaminated soils demonstrated that Sb has complexed to humic acid molar mass fractions. The results also indicate that humic acids have the ability to arrest the mobility of Sb through soils and would be beneficial in converting Sb(III) to a less toxic species, Sb(V), in contaminated areas.
-
an investigation of inorganic antimony species and antimony associated with soil humic acid molar mass fractions in contaminated soils
Environmental Pollution, 2007Co-Authors: Sarah Steely, Dulasiri Amarasiriwardena, Baoshan XingAbstract:Abstract The presence of antimony compounds is often suspected in the soil of apple orchards contaminated with Lead Arsenate pesticide and in the soil of shooting ranges. Nitric acid (1 M) extractable Sb from the shooting range (8300 μg kg −1 ) and the apple orchard (69 μg kg −1 ) had considerably higher surface Sb levels than the control site ( −1 ), and Sb was confined to the top ∼30 cm soil layer. Sb(V) was the principal species in the shooting range and the apple orchard surface soils. Size exclusion chromatography–inductively coupled plasma-mass spectrometry (SEC–ICP-MS) analysis of humic acids isolated from the two contaminated soils demonstrated that Sb has complexed to humic acid molar mass fractions. The results also indicate that humic acids have the ability to arrest the mobility of Sb through soils and would be beneficial in converting Sb(III) to a less toxic species, Sb(V), in contaminated areas.
-
distribution of soil arsenic species Lead and arsenic bound to humic acid molar mass fractions in a contaminated apple orchard
Environmental Pollution, 2006Co-Authors: Kimberly Newton, Dulasiri Amarasiriwardena, Baoshan XingAbstract:Excessive application of Lead Arsenate pesticides in apple orchards during the early 1900s has led to the accumulation of Lead and arsenic in these soils. Lead and arsenic bound to soil humic acids (HA) and soil arsenic species in a western Massachusetts apple orchard was investigated. The metal-humate binding profiles of Pb and As were analyzed with size exclusion chromatography-inductively coupled plasma mass spectrometry (SEC-ICP-MS). It was observed that both Pb and As bind "tightly" to soil HA molar mass fractions. The surface soils of the apple orchard contained a ratio of about 14:1 of water soluble As (V) to As (III), while mono-methyl (MMA) and di-methyl arsenic (DMA) were not detectable. The control soil contained comparatively very low levels of As (III) and As (V). The analysis of soil core samples demonstrated that As (III) and As (V) species are confined to the top 20 cm of the soil.
Dulasiri Amarasiriwardena - One of the best experts on this subject based on the ideXlab platform.
-
an investigation of inorganic antimony species and antimony associated with soil humic acid molar mass fractions in contaminated soils
Environmental Pollution, 2007Co-Authors: Sarah Steely, Dulasiri Amarasiriwardena, Baoshan XingAbstract:The presence of antimony compounds is often suspected in the soil of apple orchards contaminated with Lead Arsenate pesticide and in the soil of shooting ranges. Nitric acid (1M) extractable Sb from the shooting range (8300 microg kg(-1)) and the apple orchard (69 microg kg(-1)) had considerably higher surface Sb levels than the control site (<1.5 microg kg(-1)), and Sb was confined to the top approximately 30 cm soil layer. Sb(V) was the principal species in the shooting range and the apple orchard surface soils. Size exclusion chromatography-inductively coupled plasma-mass spectrometry (SEC-ICP-MS) analysis of humic acids isolated from the two contaminated soils demonstrated that Sb has complexed to humic acid molar mass fractions. The results also indicate that humic acids have the ability to arrest the mobility of Sb through soils and would be beneficial in converting Sb(III) to a less toxic species, Sb(V), in contaminated areas.
-
an investigation of inorganic antimony species and antimony associated with soil humic acid molar mass fractions in contaminated soils
Environmental Pollution, 2007Co-Authors: Sarah Steely, Dulasiri Amarasiriwardena, Baoshan XingAbstract:Abstract The presence of antimony compounds is often suspected in the soil of apple orchards contaminated with Lead Arsenate pesticide and in the soil of shooting ranges. Nitric acid (1 M) extractable Sb from the shooting range (8300 μg kg −1 ) and the apple orchard (69 μg kg −1 ) had considerably higher surface Sb levels than the control site ( −1 ), and Sb was confined to the top ∼30 cm soil layer. Sb(V) was the principal species in the shooting range and the apple orchard surface soils. Size exclusion chromatography–inductively coupled plasma-mass spectrometry (SEC–ICP-MS) analysis of humic acids isolated from the two contaminated soils demonstrated that Sb has complexed to humic acid molar mass fractions. The results also indicate that humic acids have the ability to arrest the mobility of Sb through soils and would be beneficial in converting Sb(III) to a less toxic species, Sb(V), in contaminated areas.
-
distribution of soil arsenic species Lead and arsenic bound to humic acid molar mass fractions in a contaminated apple orchard
Environmental Pollution, 2006Co-Authors: Kimberly Newton, Dulasiri Amarasiriwardena, Baoshan XingAbstract:Excessive application of Lead Arsenate pesticides in apple orchards during the early 1900s has led to the accumulation of Lead and arsenic in these soils. Lead and arsenic bound to soil humic acids (HA) and soil arsenic species in a western Massachusetts apple orchard was investigated. The metal-humate binding profiles of Pb and As were analyzed with size exclusion chromatography-inductively coupled plasma mass spectrometry (SEC-ICP-MS). It was observed that both Pb and As bind "tightly" to soil HA molar mass fractions. The surface soils of the apple orchard contained a ratio of about 14:1 of water soluble As (V) to As (III), while mono-methyl (MMA) and di-methyl arsenic (DMA) were not detectable. The control soil contained comparatively very low levels of As (III) and As (V). The analysis of soil core samples demonstrated that As (III) and As (V) species are confined to the top 20 cm of the soil.
Sarah Steely - One of the best experts on this subject based on the ideXlab platform.
-
an investigation of inorganic antimony species and antimony associated with soil humic acid molar mass fractions in contaminated soils
Environmental Pollution, 2007Co-Authors: Sarah Steely, Dulasiri Amarasiriwardena, Baoshan XingAbstract:The presence of antimony compounds is often suspected in the soil of apple orchards contaminated with Lead Arsenate pesticide and in the soil of shooting ranges. Nitric acid (1M) extractable Sb from the shooting range (8300 microg kg(-1)) and the apple orchard (69 microg kg(-1)) had considerably higher surface Sb levels than the control site (<1.5 microg kg(-1)), and Sb was confined to the top approximately 30 cm soil layer. Sb(V) was the principal species in the shooting range and the apple orchard surface soils. Size exclusion chromatography-inductively coupled plasma-mass spectrometry (SEC-ICP-MS) analysis of humic acids isolated from the two contaminated soils demonstrated that Sb has complexed to humic acid molar mass fractions. The results also indicate that humic acids have the ability to arrest the mobility of Sb through soils and would be beneficial in converting Sb(III) to a less toxic species, Sb(V), in contaminated areas.
-
an investigation of inorganic antimony species and antimony associated with soil humic acid molar mass fractions in contaminated soils
Environmental Pollution, 2007Co-Authors: Sarah Steely, Dulasiri Amarasiriwardena, Baoshan XingAbstract:Abstract The presence of antimony compounds is often suspected in the soil of apple orchards contaminated with Lead Arsenate pesticide and in the soil of shooting ranges. Nitric acid (1 M) extractable Sb from the shooting range (8300 μg kg −1 ) and the apple orchard (69 μg kg −1 ) had considerably higher surface Sb levels than the control site ( −1 ), and Sb was confined to the top ∼30 cm soil layer. Sb(V) was the principal species in the shooting range and the apple orchard surface soils. Size exclusion chromatography–inductively coupled plasma-mass spectrometry (SEC–ICP-MS) analysis of humic acids isolated from the two contaminated soils demonstrated that Sb has complexed to humic acid molar mass fractions. The results also indicate that humic acids have the ability to arrest the mobility of Sb through soils and would be beneficial in converting Sb(III) to a less toxic species, Sb(V), in contaminated areas.
Eton E Codling - One of the best experts on this subject based on the ideXlab platform.
-
accumulation of Lead and arsenic by peanut grown on Lead and arsenic contaminated soils amended with broiler litter ash or superphosphate
Journal of Plant Nutrition, 2018Co-Authors: Eton E CodlingAbstract:Accumulation of Lead (Pb) and arsenic (As) in peanut grown on Pb/As-contaminated soils amended with two sources of phosphorus (P) was investigated. An urban soil and an orchard soil with Pb concentrations of 1120 and 272, and As concentrations of 6.9 and 90 mg kg-1, respectively, were amended with three rates (0, 56, and 112 kg ha-1) of P supplied as broiler litter ash or superphosphate and planted with peanuts. At harvest, peanut kernel As concentration was 2.9 mg kg-1 on the orchard soil and 0.003 mg kg-1 on the urban soil. Kernel As was not significantly affected by P source and was not significantly different between the normal and high P rates. Kernel Pb concentration was below the instrument detection limit in all cases. Land with history of arsenic or Lead-Arsenate application should be tested for As before used for peanut production.
-
effects of compost amended Lead Arsenate contaminated soils on total and inorganic arsenic concentrations in rice
Journal of Plant Nutrition, 2017Co-Authors: Eton E Codling, G ChenAbstract:Rice (Oryza sativa L.), a staple crop for over 50% of the world's population, is also a source of dietary arsenic (As) because of it's efficiencyat accumulating As. Lead–Arsenate pesticide was used...
-
potential of chitosan chemically modified chitin for extraction of Lead Arsenate contaminated soils
Communications in Soil Science and Plant Analysis, 2016Co-Authors: Abigail Padillarodriguez, Eton E CodlingAbstract:ABSTRACTArsenic, Lead, and phosphorous contamination in soils represents a health risk. Chitosan (poly-N-acetyl glucosamine) inexpensive by-product derived from chitin has been used as a metals adsorbent. Objectives of this research were to evaluate the effectiveness of chitosan solution for arsenic, Lead, and phosphorous extraction from Lead-Arsenate contaminated soils, and evaluate the effectiveness of protonated chitosan flakes (PCF) and ferric hydroxide chitosan beads (Fe(III)-CB) for water-soluble As removal from these soils. Percentage of arsenic, Lead, and phosphorous removed from the soils by chitosan solution ranged from 0.96% to 17%, 1.80% to 31%, and 0.66% to 11%, respectively. Percentage of water-soluble arsenic removed by PCF and by Fe (III)-CB ranged from 12% to 47% and 36% to 77%, respectively. Averaged over soils, Fe (III)-CB removed slightly more arsenic (As) (42 mg kg−1) compared to Mehlich III (40 mg kg−1) extractant. Results indicate potential for the use of chitosan as an extraction f...
-
accumulation of Lead and arsenic by potato grown on Lead Arsenate contaminated orchard soils
Communications in Soil Science and Plant Analysis, 2016Co-Authors: Eton E Codling, Rufus L Chaney, Carrie E GreenAbstract:ABSTRACTThere are concerns of potential food chain transfer of metals in crops grown on Lead–Arsenate-contaminated soils. The objective of this study was to investigate Lead and arsenic uptake by four potato (Solanum tuberosum L.) cultivars grown on Lead–Arsenate-contaminated soils with Lead and arsenic concentrations ranging from 350 to 961 and 43 to 290 mg kg−1, respectively. Yield was not reduced due to treatment. Potato tubers were washed thoroughly before peeling. Lead concentration in both peeled tubers and peel was below instrument detection limit. Arsenic concentration in peeled tubers grown on the Lead–Arsenate soils ranged from 0.24 to 1.44 mg kg−1. Arsenic concentration was 60% higher in the peel than in the peeled tuber. The relatively high arsenic levels in the peel demonstrated that arsenic was taken up into the potato peel tissue. It is recommended that if potatoes are grown on these soils they should be peeled before consumption.Abbreviations Pb, Lead; As, arsenic; DW, dry weight; FW, fres...
-
accumulation of Lead and arsenic by carrots grown on Lead Arsenate contaminated orchard soils
Journal of Plant Nutrition, 2015Co-Authors: Eton E Codling, Rufus L Chaney, Carrie E GreenAbstract:Concerns have been raised of possible human food chain transfer of Lead and arsenic from crops grown on orchard soils with histories of Lead Arsenate use. The objective of this study was to determine arsenic and Lead uptake by three cultivars of carrots grown on four orchard soils with histories of Lead Arsenate use. Total concentrations of arsenic and Lead in these soils ranged from 93 to 291 and from 350 to 961 mg kg−1 for arsenic and Lead, respectively. Arsenic in peeled carrot ranged from 0.38 to 1.64 mg kg−1, while Lead ranged from 2.67 to 7.3 mg kg−1 dry weight. This study demonstrated that carrots will accumulate arsenic and Lead in the root, which may become a human health risk when consumed. However, further studies are needed to determine what fraction of arsenic and Lead in these carrots are bioavailable to humans when consumed.
Philippe Colomban - One of the best experts on this subject based on the ideXlab platform.
-
non invasive on site raman study of blue decorated early soft paste porcelain the use of arsenic rich european cobalt ores comparison with huafalang chinese porcelains
Ceramics International, 2018Co-Authors: Philippe Colomban, Veronique MilandeAbstract:Abstract Both European and Asian historical records report that Jesuits were at the origin of enamelling technology transfers from France (and Italy) to Asia at the 17th–18th century turn. A mobile Raman set-up equipped with a high magnification (×200) microscope objective with long working distance is used to identify the use of European (arsenic-rich) cobalt in 17th and 18th century porcelains: twenty soft-paste porcelains from Rouen (L. Poterat’ Factory), Saint-Cloud, Paris (Pavie’, Hebert’, Chicanneau’, and Bellevaux’ factories), Lille, Mennecy, and Vincennes factories, of which almost all were produced before 1750, belonging to the Cite de la Ceramique Collection (formerly Musee national de Ceramique, Sevres), have been analysed in order to get a more representative view of the type of cobalt ore used. A large proportion of blue decors exhibit signs of Lead Arsenate, even for productions after ~ 1750, which proves the wilful interest given to arsenic phases in magnifying blue hues. Different Lead Arsenate signatures are observed, one assigned to the product of reaction of As-rich cobalt ore with Lead-based glaze and another characteristic of added arsenic. At least two groups of glaze are identified: a Lead-rich one and a mixed Lead-alkali glaze. Porcelains made during the second half of the 18th century exhibit the very strong As-O modes characteristic of the voluntary addition of a Lead-Arsenate forming compound. Comparisons are made with Qing Chinese productions exhibiting similar Raman signatures and expected to have benefited from transfers of technologies.
-
Non-invasive Raman analyses of Chinese huafalang and related porcelain wares. Searching for evidence for innovative pigment technologies
Ceramics International, 2017Co-Authors: Philippe Colomban, Yizheng Zhang, Bing ZhaoAbstract:Abstract Eighteen Chinese painted enamelled porcelains and three Chinese enamelled Yixing stonewares dated to the 16th to 19th centuries and kept at the Musee national des arts asiatiques-Guimet (MNAAG), have been analysed with a mobile Raman set-up to identify their enamelling technology. Different Grand Feu (Leadless or Lead-poor colourless and blue enamel) and Petit Feu (Lead-rich red (hematite), yellow and green (Pb-Sn/Sb/X pyrochlore) and black enamels) glazes were respectively identified on wares from the wucai group, the Famille verte group, and the huafalang group. Calcium phosphate was detected in a 17th century vase as a rare opacifier. Cassiterite was identified in the light green glaze of an imperial huafalang bowl dated to the final period of the Kangxi reign (1662–1722), ca. the 1st quarter of the 18th century. Lead Arsenate was identified in the blue glaze of two artefacts, a huafalang bowl and a painted enamel water dropper, and in the blue enamel of a 19th century Yixing teapot. Lead Arsenate found in some of the blue enamels appears to arise from the arsenic content in Erzgebirge cobalt ores (Saxony) and not due to voluntary addition. This may prove the use of raw materials or enamel powder imported from Europe in developing these opaque colours. The use of Lead Arsenate as white opacifier is clear for a water dropper bearing the Yongzheng emperor's mark (r. 1723–1735). The technological palette appears different for the artefacts expected to originate from the same period and provenance (imperial workshop) which is consistent with a period of intense innovation, open to technological skill from abroad – i.e. from French/European painted enamel technology – as revealed by ancient French (Jesuits) and Chinese historical reports.
-
On-site analysis of Limoges enamels from sixteenth to nineteenth centuries: An attempt to differentiate between genuine artefacts and copies
Journal of Raman Spectroscopy, 2010Co-Authors: Burcu Kirmizi, Philippe Colomban, Monique BlancAbstract:A selection of 15 painted enamels, most of which belong to Limoges productions, from 1500 to 1900 a.d., has been studied. on-site in the storage rooms of musee des Arts decoratifs in Paris. The Raman signatures of the transparent and/or opacified glass matrix are discussed and compared with those which were previously recorded on glazed pottery, enamelled and stained glasses as well as Chinese cloisonne enamels. Analysed enamels mostly belong to soda-lime-based glass. Three types of compositions such as soda-lime (fifteenth to sixteenth century), soda-rich (fifteenth, sixteenth/nineteenth centuries) and Lead-potash-lime (sixteenth and nineteenth centuries) are identified on the basis of the Raman signature of the glaze according to the wavenumber maxima of the Si-O stretching and bending multiplets. The pigment signatures are similar to those recorded on ceramic glazes and glass enamels, which proves the similarity of the technologies. Cassiterite as an opacifier and hematite red and Naples yellow pigment variations give characteristic Raman signatures. The presence of Lead Arsenate as a pigment opacifier in nineteenth-century samples is confirmed. Attempts are made to establish tools for the differentiation between genuine artefacts and nineteenth-century restoration or fakes. Copyright © 2010 John Wiley & Sons, Ltd.