Trace metal contamination of soils and vegetables in Shipham, Somerset

1979 ◽  
Vol 93 (3) ◽  
pp. 753-756 ◽  
Author(s):  
B. E. Davies ◽  
Rhoda C. Ginnever
Keyword(s):  
Mining Area ◽  
Mountain Area ◽  
Full Account ◽  
Soil Lead ◽  
North East ◽  
Reconnaissance Survey ◽  
Lead And Zinc ◽  
Contamination Of Soils ◽  
Cadmium Lead ◽  
The Village

Copper, lead and zinc ores have been mined in past years in many western counties of Great Britain leaving a legacy of extensive soil contamination. A survey of north-east Clwyd (Davies & Roberts, 1978) revealed that in the Halkyn Mountain area some 171 km2 of land are contaminated by lead and 69 km2 by cadmium (including 13 km2 containing from 10 to 540 mg Cd/kg soil). The Mendip Hills of Somerset are an ancient leadzinc mining area similar in many ways to Halkyn Mountain and, after some reconnaissance sampling in 1972 and 1974, a trace element survey was initiated in 1977. Topsoil samples (174) were collected on an approximately regular 2×2 km grid from a 600 km8 area of north Somerset including the Mendips (B. E. Davies and R. C. Ginnever, unpublished results). This survey revealed that the Mendips were generally contaminated by cadmium, lead and zinc. Highest soil lead values were found near Wells (11 g/kg) and Charterhouse (73 and 80 g/kg) but in the case of cadmium the survey revealed that some 2 km2 of land around the village of Shipham contained values exceeding 10 mg Cd/kg. Preparatory to detailed investigations planned for 1979 a reconnaissance survey of soils and vegetables from the village was made. Meanwhile, the Department of the Environment announced the results of another (independent) survey which also demonstrated that Shipham possessed a considerable cadmium problem (e.g. McGinty, 1979). A full account of our survey of north Somerset will be published and this paper presents the results from the reconnaissance of Shipham.

Competition Absorption and Desorption Dynamic Character of Cadmium, Lead and Zinc by Soil in North-East of China

2011 ◽  
Vol 356-360 ◽  
pp. 52-58
Author(s):  
Su Chen ◽  
Lei Chao ◽  
Li Na Sun ◽  
Tie Heng Sun
Keyword(s):  
Heavy Metals ◽  
Liaoning Province ◽  
Desorption Process ◽  
Dynamic Character ◽  
North East ◽  
Lead And Zinc ◽  
Absorption Phase ◽  
Fast Absorption ◽  
Elovich Equation ◽  
Cadmium Lead

The competitive absorption and desorption of cadmium (Cd), lead (Pb) and zinc (Zn) in meadow brown soil from Liaoning province in north-east China was studied in the paper in order to establish the selectivity sequences for the sorption and desorption of these heavy metals in the soil and obtain the absorption and desorption dynamic character of these heavy metals. The results showed that with the increasing of the absorption times, the absorption quantities of Cd, Pb and Zn were increased little by little. The absorption process of Cd, Pb and Zn could be divided into the fast absorption phase and the slow absorption phase. And the fast absorption phases were from the beginning to 60 min, 120 min and 120 min for Cd, Pb and Zn, respectively. The more company metals (i.e. Pb and Zn) existed in the absorption solutions, the less absorption quantities of Cd absorbed by soil. The co-existence of Cd, Pb and Zn had obviously decreased the absorption of Pb by soil. And it was the same situation that Zn absorbed by soil was decreased by the company metals such as Cd, Pb. The company metals had obvious influence on the desorption process of Cd. The existence of Pb and Zn promoted the desorption of Cd. And desorption behavior of Zn was bated by the existence of Pb and Cd. While the company metals Cd and Zn restrained the desorption of Pb. The best equation to describe the absorption and desorption dynamic character of Cd, Pb and Zn was Elovich equation, next was Two–constant equation, and the effect of First-order dynamics equation was not good.

scholarly journals Removal of Pb, Cu, Cd, and Zn Present in Aqueous Solution Using Coupled Electrocoagulation-Phytoremediation Treatment

2017 ◽  
Vol 2017 ◽  
pp. 1-11 ◽  
Author(s):  
Francisco Ferniza-García ◽  
Araceli Amaya-Chávez ◽  
Gabriela Roa-Morales ◽  
Carlos E. Barrera-Díaz
Keyword(s):  
Aqueous Solution ◽  
Current Density ◽  
Batch Reactor ◽  
Operating Time ◽  
Typha Latifolia ◽  
Optimal Conditions ◽  
Lead And Zinc ◽  
Parallel Arrangement ◽  
Aluminum Electrodes ◽  
Cadmium Lead

This study presents the results of a coupled electrocoagulation-phytoremediation treatment for the reduction of copper, cadmium, lead, and zinc, present in aqueous solution. The electrocoagulation was carried out in a batch reactor using aluminum electrodes in parallel arrangement; the optimal conditions were current density of 8 mA/cm2 and operating time of 180 minutes. For phytoremediation the macrophytes, Typha latifolia L., were used during seven days of treatment. The results indicated that the coupled treatment reduced metal concentrations by 99.2% Cu, 81.3% Cd, and 99.4% Pb, while Zn increased due to the natural concentrations of the plant used.

Păstoritul de pe Valea Argeșului – coordonate spațiale

2020 ◽  
Vol 34 ◽  
pp. 39-70
Author(s):  
Cristian Micu
Keyword(s):  
Field Research ◽  
Essential Elements ◽  
Mountain Area ◽  
Pastoral System ◽  
Spatial Coordinate ◽  
Spatial Coordinates ◽  
Village Communities ◽  
The Right ◽  
The Village ◽  
Daily Travel

"Shepherding on Argeș Valley – spatial coordinates This paper presents the essential elements that define the spatial coordinate characteristic of shepherding which is practised in the sub-Carpathian villages on the Argeș Valley, following the documentary attestations of the villages, the genesis and evolution of the village boundaries, the evolution of land ownership and the right to use lands (in condominium or individually). Also within the spatial coordinate, there are researched the traditional ways in which the potential of the rural land fund is highlighted, as a result of its geomorphological, pedological, climatic qualities, etc., the study taking into consideration all the areal types with pastoral potential, not only those on the administrative territory of the villages, but also those in the mountain area destined for summer grazing. If for the presentation of origins, attestations, borderline fixation of the villages from the studied areal, documents, monographic studies and other categories of specialized works have been used, for the understanding of the manner of pastoral, individual and especially collective exploitation of the land fund by the village communities, of valorizing the fodder qualities of the different types of surfaces, it was necessary to carry out field research in the three targeted villages: Albeștii de Argeș, Corbeni and Arefu, all in the Argeș County. The visit of sheepfolds from Lespezi, Lipitoarea, Ciocanu, Podeanu, Oticu, in the alpine hollow of the Făgăraș Mountains, were necessary both for studying some elements related to the spatial coordinate (sheepfold location, daily travel routes, travel routes from the village hearth to the mountains, etc.) as well as for conducting interviews, based on an elaborate questionnaire, interviews generating unique and extremely useful information also for researching the other coordinates of the pastoral system practiced in the area. Keywords: shepherding, Argeș Valley, spatial coordinate, pastoral system, field research "

On the Chloride Waters of Great Britain

1945 ◽  
Vol 82 (6) ◽  
pp. 267-273 ◽  
Author(s):  
W. Anderson
Keyword(s):  
Great Britain ◽  
The South ◽  
Very Old ◽  
North East ◽  
The North ◽  
Exact Position ◽  
The Many ◽  
The Village ◽  
Made In

Formerly there were several surface brine springs in the North-East Coalfield; to-day there are none. From the many accounts of their occurrence nothing has been learned of their exact position, and very little of the composition of their waters. The earliest record, made in 1684, described the Butterby spring (Todd, 1684), and then at various times during the next two centuries brine springs at Framwellgate, Lumley, Birtley, Walker, Wallsend, Hebburn, and Jarrow were noted. In particular the Birtley salt spring is often mentioned, and on the 6-in. Ordnance map, Durham No. 13, 1862 edition, it is sited to the south-east of the village. Although no record has been found there must have been either a brine spring or well at Gateshead, for the name of the present-day suburb, Saltwell, is very old, and brine springs are still active in the coal workings of that area.

scholarly journals Mapping the Urban Lead Exposome: A Detailed Analysis of Soil Metal Concentrations at the Household Scale Using Citizen Science

2018 ◽  
Vol 15 (7) ◽  
pp. 1531 ◽  
Author(s):  
Gabriel Filippelli ◽  
Jessica Adamic ◽  
Deborah Nichols ◽  
John Shukle ◽  
Emeline Frix
Keyword(s):  
Citizen Science ◽  
The United States ◽  
Metal Concentrations ◽  
Soil Lead ◽  
Urban Core ◽  
Lead And Zinc ◽  
Property Scale ◽  
Core Soil ◽  
The City ◽  
Soil Metal

An ambitious citizen science effort in the city of Indianapolis (IN, USA) led to the collection and analysis of a large number of samples at the property scale, facilitating the analysis of differences in soil metal concentrations as a function of property location (i.e., dripline, yard, and street) and location within the city. This effort indicated that dripline soils had substantially higher values of lead and zinc than other soil locations on a given property, and this pattern was heightened in properties nearer the urban core. Soil lead values typically exceeded the levels deemed safe for children’s play areas in the United States (<400 ppm), and almost always exceeded safe gardening guidelines (<200 ppm). As a whole, this study identified locations within properties and cities that exhibited the highest exposure risk to children, and also exhibited the power of citizen science to produce data at a spatial scale (i.e., within a property boundary), which is usually impossible to feasibly collect in a typical research study.

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