Land Contamination & Reclamation最新文献_第6页

Effect of other metals on the dissolution of tungsten. 其它金属对钨溶解的影响。

Land Contamination & Reclamation Pub Date : 2009-04-01 DOI: 10.2462/09670513.938

A. Ogundipe, W. Braida, C. Christodoulatos, A. Koutsospyros, G. O’Connor

引用次数: 1

Competitive sorption of tungstate, molybdate and phosphate mixtures onto goethite 钨酸盐、钼酸盐和磷酸盐混合物在针铁矿上的竞争性吸附

Land Contamination & Reclamation Pub Date : 2009-04-01 DOI: 10.2462/09670513.925

N. Xu, C. Christodoulatos, A. Koutsospyros, W. Braida

引用次数: 18

Uptake of lead and tungsten in Cyperus esculentus in a small-arms range simulation. 在小型武器射程模拟中，沙螺对铅和钨的吸收。

Land Contamination & Reclamation Pub Date : 2009-04-01 DOI: 10.2462/09670513.926

Afrachanna D. Butler, V. Medina, S. Larson, C. Nestler

引用次数: 6

Tungsten in the former Soviet Union: review of environmental regulations and related research. 前苏联的钨:环境法规回顾及相关研究。

Land Contamination & Reclamation Pub Date : 2009-04-01 DOI: 10.2462/09670513.923

N. Strigul, A. Koutsospyros, C. Christodoulatos

引用次数: 25

Effect of legacy lead on leachability of tungsten and lead from differing soil types. 遗留铅对不同土壤类型中钨和铅可浸性的影响。

Land Contamination & Reclamation Pub Date : 2009-04-01 DOI: 10.2462/09670513.919

G. O’Connor, S. Larson, C. Griggs, M. Thompson, C. Nestler

{"title":"Effect of legacy lead on leachability of tungsten and lead from differing soil types.","authors":"G. O’Connor, S. Larson, C. Griggs, M. Thompson, C. Nestler","doi":"10.2462/09670513.919","DOIUrl":"https://doi.org/10.2462/09670513.919","url":null,"abstract":"Tungsten–nylon ammunition has been fired on ranges that are currently firing, or will fire in the future, lead-containing rounds, i.e. legacy lead (LL). In order to evaluate potential losses of the lead (Pb) and tungsten (W) from range soils into leachate, preand post-firing soils were subjected to three leaching/extraction techniques: the distilled deionized water suspend and settle (DDI SS the toxicity characteristic leaching procedure (TCLP); and the sequential extraction (SE) procedure. The effectiveness of the acidic solutions was compromised, due to pH effects on W solubility, and possible reactions of Pb and W producing forms of Pb that are not amenable to acidic extractions. However, the neutral solutions used for the DDI S&S tests and the initial SE exchangeable fraction (pH 7) were found to be better alternatives for concurrently evaluating lead and tungsten. Comparing leachability from LL-amended soils, with and without tungsten residues, showed, first, that the presence of tungsten residues did not necessarily result in increased Pb leachability, and may result in decreased soluble lead concentrations. Second, lead residues exhibited a variable influence on tungsten leachability. The effect of lead on tungsten leachability was, therefore, determined to be soil type-dependent for the six soils evaluated.","PeriodicalId":336428,"journal":{"name":"Land Contamination & Reclamation","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115279842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

The potential for bioaccumulation of tungsten in earthworms - the effect of legacy lead on biouptake. 蚯蚓体内钨的生物积累潜力-遗留铅对生物吸收的影响。

Land Contamination & Reclamation Pub Date : 2009-04-01 DOI: 10.2462/09670513.932

D. Felt, S. Larson, C. Griggs, C. Nestler, M. Thompson

{"title":"The potential for bioaccumulation of tungsten in earthworms - the effect of legacy lead on biouptake.","authors":"D. Felt, S. Larson, C. Griggs, C. Nestler, M. Thompson","doi":"10.2462/09670513.932","DOIUrl":"https://doi.org/10.2462/09670513.932","url":null,"abstract":"Studies have shown that the metal components in a soil influence the geochemical processes that occur in that soil (McGregor and Blowes 2002; Dermatas 2004; Petrunic and Al 2005). Since tungsten–nylon rounds have been fired on ranges that have historically been used for training using lead rounds, questions have been raised as to the effect that tungsten has on weathered lead and the other constituents in soils. Possible interactions with the various metals in the soil may affect tungsten’s solubility or sorption properties, which may in turn influence its bioavailability. In order to determine the effect of weathered lead on tungsten biouptake, a bioavailability study was conducted using earthworms (Eisenia fetida). This study allowed direct comparison of lead and tungsten biouptake in a variety of soils amended with weathered lead and fired on with tungsten–nylon bullets. The effects of soil aging on biouptake were also studied. Results indicate that changes in earthworm biouptake of lead and tungsten, which resulted from the presence of legacy lead (LL) material in soils, varied and were soil-type dependent. Soil aging generally did not affect the biouptake of lead or tungsten by earthworms.","PeriodicalId":336428,"journal":{"name":"Land Contamination & Reclamation","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134558834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Tungsten human toxicity: a compendium of research on metallic tungsten and tungsten compounds. 钨对人体的毒性:金属钨和钨化合物的研究简编。

Land Contamination & Reclamation Pub Date : 2009-04-01 DOI: 10.2462/09670513.933

M. Pardus, R. Lemus-Olalde, Danyle R. Hepler

引用次数: 3

Effect of soil type on tungsten leachability. 土壤类型对钨浸出性的影响。

Land Contamination & Reclamation Pub Date : 2009-04-01 DOI: 10.2462/09670513.924

G. O’Connor, S. Larson, C. Griggs, M. Thompson, C. Nestler

{"title":"Effect of soil type on tungsten leachability.","authors":"G. O’Connor, S. Larson, C. Griggs, M. Thompson, C. Nestler","doi":"10.2462/09670513.924","DOIUrl":"https://doi.org/10.2462/09670513.924","url":null,"abstract":"In order to evaluate the potential loss of tungsten associated with small-arms ammunition from range soils into leachate and runoff water, preand post-firing soils were subjected to three leaching/ extraction techniques: the distilled, deionized water suspend and settle (DDI SS the toxicity characteristic leaching procedure (TCLP); and the sequential extraction (SE) procedure. The SE, and, to a lesser extent, the TCLP extraction, were not effective for evaluating tungsten mobility, because of the inverse relationship between acidity and the solubility of tungsten species. However, results from DDI S&S tests and the exchangeable SE fraction do provide some information about the potential for migration of tungsten from soil. The concentration of tungsten obtained using the DDI S&S procedure was highest in leachates from Sand and Glacial Till and lowest in leachate from Muck. The two soil types (Sand and Glacial Till) that exhibited high leachability in the DDI S&S leaching procedure also produced SE-exchangeable extraction solutions that contained the highest tungsten concentrations. Because of the unique properties of elemental tungsten with regard to oxidation and dissolution in aqueous solutions, TCLP and the acid-derived SE procedure are less useful for predicting the long-term leachability of tungsten than the DDI S&S procedure.","PeriodicalId":336428,"journal":{"name":"Land Contamination & Reclamation","volume":"4 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116853986","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Distribution of tungsten on soil particles following firing of tungsten ammunition into various soil types. 钨弹进入不同土壤类型后，土壤颗粒中钨的分布。

Land Contamination & Reclamation Pub Date : 2009-04-01 DOI: 10.2462/09670513.918

G. O’Connor, W. Martin, S. Larson, C. Weiss, P. Malone

{"title":"Distribution of tungsten on soil particles following firing of tungsten ammunition into various soil types.","authors":"G. O’Connor, W. Martin, S. Larson, C. Weiss, P. Malone","doi":"10.2462/09670513.918","DOIUrl":"https://doi.org/10.2462/09670513.918","url":null,"abstract":"Realistic training is the cornerstone for a viable military, and should be conducted while responsibly minimizing potential adverse impacts on human health and the natural environment. Metals and metal alloys are used in bullet manufacture to satisfy ballistic performance requirements as well as environmental concerns related to target practice and training. Soil types vary throughout the United States, and the variation in the soil provides a different impact for the bullets that are fired into them, due to their physical and chemical composition. Six different soil types characteristic of small-arms firing-range berm material located throughout the United States were fired into with lead and tungsten–nylon bullets, and were then analyzed to determine the bullet fragmentation characteristics in soils using scanning electron microscopy (SEM) and X-ray diffraction (XRD). Scanning electron photomicrographs showed that typical lead–antimony alloy rounds produced discrete particulate-lead fragments following impact with the six backstop soils. Impacts of tungsten–nylon rounds produced smears or coatings of very fine tungsten–nylon on individual soil particles in the six soils and discrete tungsten particles in four of the six soils. The tungsten–nylon bullets generated a large number of small particles and smears with greater surface area per bullet impacted in the soil than the lead– antimony bullets, potentially increasing the dissolution and corrosion rate of the tungsten versus lead bullets in the berm material.","PeriodicalId":336428,"journal":{"name":"Land Contamination & Reclamation","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128976222","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 14

Polytungstate analysis by SEC-ICP-MS and direct-infusion ESI-MS. 用SEC-ICP-MS和直接输注ESI-MS分析多钨酸盐。

Land Contamination & Reclamation Pub Date : 2009-04-01 DOI: 10.2462/09670513.929

A. Bednar, R. Kirgan, David R Johnson, A. Russell, C. Hayes, C. Mcgrath

引用次数: 15