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Article
Nitrogen Turnover on a Chromium-Contaminated Site
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Article
Effect of Diesel Fuel on Growth of Selected Plant Species
Diesel oil is a complex mixture of hydrocarbons with an average carbon number of C8–C26. The majority of components consist of alkanes, both straight chained and branched and aromatic compounds including mono-...
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Article
The recovery of maleic hydrazide from processed potato products
A method used for estimating extractable maleic hydrazide (MH) concentrations in fresh potato material, concentration range 5–17 mg kg−1, was found not to be suitable for processed potato products (10–33% recover...
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Article
Explosion and combustion processes associated with the fogging of stored potatoes
An appraisal was undertaken of the key factors involved in explosion and combustion processes mainly associated with the fogging of chlorpropham formulations into potato stores. The key factors considered are ...
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Article
Residues of free and bound maleic hydrazide in potato tubers
The method of Vadukul (1991) for determining maleic hydrazide (MH) was modified and gave recoveries of free MH of 89%±4%. The values recorded on individual tubers ranged from 2–14 mg kg−1. Maleic hydrazide was ev...
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Chapter and Conference Paper
The Phytoremediation of Heavy Metal Contamination Using Coppice Woodland
In Scotland as in other industrial countries the decline of traditional “heavy industries” like mining and smelting etc. have left large areas of derelict and vacant land Often the level of heavy metal contami...
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Chapter and Conference Paper
Pollutant Radionuclide Geochemistry in Saltmarsh Sediments
Extensive radionuclide contamination of floodplain sediments in SW Scotland has resulted from liquid effluent releases from the Sellafield nuclear fuel reprocessing plant in NW England (MAFF, 1967-92). By 1990...
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Chapter and Conference Paper
Analytical Procedures for the Analysis of Heavy Metals in Contaminated Soils
Heavy metals are held in soils by a number of mechanisms, the measurement of which is usually defined by the extraction procedure. The system is even more complex in contaminated soils, where the metal may be ...
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Chapter and Conference Paper
Radiocaesium Behaviour in Scottish Upland Soils
Upland organic soils in Scotland received relatively high levels of radionuclide contamination from both nuclear weapons testing and Chernobyl fallout (Peirson, 1971; Clark and Smith, 1988). Deposition of Cher...
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Article
The textural analysis of cooked potato. 3. Simple methods for determining texture
Separate methods were developed for measuring softness, i.e. ease of cutting, and dryness, i.e. the tendency to cell separation. Pieces of potato tissue 30 mm long and 10 mm square were cooked in boiling water...
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Article
The textural analysis of cooked potato. 1. Physical principles of the separate measurement of softness and dryness
The texture of cooked potatoes was described by two physical parameters: softness, resulting from both cell cleavage and cell separation, and dryness, depending on the ratio of cell separation to cell cleavage...
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Article
The textural analysis of cooked potato. 2. Swelling pressure of starch during gelatinisation
It has been disputed whether, when potato starch gelatinises and absorbs water, it generates an osmotic or matric pressure that makes the potato cells become round and separate from one another. Starch suspens...
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Article
Determination of thiabendazole residues in potatoes using high pressure liquid chromatography
This paper describes a method for the extraction, purification and quantification by high pressure liquid chromatography using fluorimetric detection, of thiabendazole residues from potatoes. Bonded silica sor...
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Article
The relationship between temperature and sprout growth in stored seed potatoes
Sprout growth in a range of European cultivars was studied over two seasons at constant temperatures from 2 to 25°C, with an additional 33 (day)/22°C (night) treatment in the second season. There were only min...
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Article
Studies on potato sprout suppressants. 7. Headspace and residue analysis of chlorpropham in a commercial box potato store
Headspace and residue concentrations of chlorpropham were determined in a box potato store at the start of the storage season. The concentration of headspace chlorpropham was in the range 0.3–1.3 μg per 10 dm3. T...
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Article
Studies on potato sprout suppressants. 6. Headspace analysis of tecnazene and chlorpropham in a commercial box potato store
The headspace concentrations of tecnazene (1,2,4,5-tetrachloro-3-nitrobenzene) and chlorpropham [isopropyl-N-(3-chlorophenyl) carbamate] were determined in a box potato store by adsorption of potato store head...
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Article
Wound healing in potato tuber tissue. 1. Effects of maturity at harvest
Potatoes of cvs Record (maincrop) and Red Craigs Royal (second early) were harvested at intervals from 22 August to 14 October. Half of the plots were mechanically defoliated on 22 August, by which date haulms...
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Article
Wound healing in potato tuber tissue. 2. Varietal and anatomical variation
The wound healing potential of 15 UK maincrop potato cultivars was assessed from the ability of discs of cortical and medullary tissue to become resistant to the loss of water vapour, as their surfaces suberiz...
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Article
Studies on the foliar uptake of iron solutions into potato leaves
The foliar uptake of iron into potato leaves was studied in five cultivars. Uptake was greater at high humidity levels and was also affected by differences in leaflet surface morphology between leaves from the...
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Article
A method for the determination of chlorpropham residues in crisps and crisp frying oil
Chlorpropham residues in potato crisps were determined by a method of analysis involving solvent extraction, alumina column clean-up and quantification of the chlorpropham by gas chromatography. The method has...
