摘要:

A greenhouse study was conducted to evaluate the fertility status of six overburdens from the potential lignite mining area of Louisiana. Subterranean clover (Trifolium subterraneanL. cv. woogenellup) was grown in 2.5 kg of each overburden material which was treated with 0, lx, 2x, 4x and 8x the recommended rate of fertilizer containing P and K based on state soil test analyses. Plants were grown for 14 weeks and harvested to evaluate dry matter yield and mineral composition.

ISSN:0360-1226    

DOI:10.1080/10934528709375366

出版商:Taylor & Francis Group    

年代:1987

数据来源: Taylor

摘要:

Six overburdens from a potential lignite mining area of Louisiana were used to evaluate their weathering as affected by a combination of rates of fertilizer, lime, plant growth and simulated well drained conditions. Subterranean clover (Trifolium subterranean) grown on each overburden material in plastic pots received O, lx, 2x, 4x and 8x the recommended rate of fertilizer which was a combination of P and K. Lime was applied to the overburdens based on soil test lime requirement to increase the pH to 6.5.

ISSN:0360-1226    

DOI:10.1080/10934528709375367

出版商:Taylor & Francis Group    

年代:1987

数据来源: Taylor

摘要:

Four soil samples which had been polluted with exhaust gas and dust froi smelter were sequentially extracted so that Cd,Zn,Pb, and Cu could be partitioned into five operationally defined geochemical fractions: exchangeable, bound to carbonates, bound to Fe‐Mn oxides, bound to organic natter and residual. Metal recoveries were within ±6% of the independently measured total Cd,Zn,Pb, and Cu concentrations. Amount of the metals which were distributed into various fractions were remarkably different from metal species. The highest amount of Cd (ca. 45% ) was found in the exchangeable fraction, and only 8% in the organic fraction. The highest amount of Cu (ca.52%) was found in the organic fraction, but in the exchangeable and carbonates fraction only 1% and 3%. The Fe‐Mn oxide fraction contained 20,29,27 and 22%, and residual fraction 16,40,25 and 22% of the Cd,Zn,Pb, and Cu, respectively. Assuming that mobitity and biogical availability are related to the solubility of the geochemical form of the metals and decreases in the order of extraction, the apparent mobility and potential metal bioavailability for these polluted soils were Cd > Zn > Pb > Cu.

ISSN:0360-1226    

DOI:10.1080/10934528709375368

出版商:Taylor & Francis Group    

年代:1987

数据来源: Taylor

摘要:

A proper solvent extraction and a gas chromatographic technique were applied in order to investigate the cause of a series of sensory irritation effects in the workers of an Italian tannery. The lindane contained in the hide preservation insect‐powder was ascertained to be the pollutant causing the observed symptoms.

ISSN:0360-1226    

DOI:10.1080/10934528709375369

出版商:Taylor & Francis Group    

年代:1987

数据来源: Taylor

摘要:

Inorganic metal‐solid assocations can somewhat arbitrarily be characterized in various extraction procedures. The simultaneous extraction of organics (humic and fulvic acids, HFA, characterized by their UV absorbance) has been studied in the sequential leaching of sediment bound trace metals (Cd, Cu, Fe, Mn and Zn). Typically 2–5% of the total HFA would follow the ion exchangeable fraction, 4–10% the carbonate/hydroxide fraction and 7–13% the hydrous oxide fration. Essentially no HFA remains after wet oxidation with H2O2/HNO3. From the distribution of the metals and the HFA between the various leaching steps it appears that organics can constitute a significant structural component of the amorphous hydrous oxide phase (iron and manganese) which partly prevent the distribution of this fraction in reducing acidic media (NH2OH‐HC1).

ISSN:0360-1226    

DOI:10.1080/10934528709375370

出版商:Taylor & Francis Group    

年代:1987

数据来源: Taylor

摘要:

Preliminary dose‐response relationships were established byin vitroincubation of dehydroepiandrosterone (DHEA) and epiandrosterone (EPI) with human blood. DHEA in increasing concentration resulted in 61% to 76% inhibition of erythrocyte G‐6‐PD activity, while EPI in increasing concentration resulted in 69 to 85% inhibition (p = .001).

ISSN:0360-1226    

DOI:10.1080/10934528709375371

出版商:Taylor & Francis Group    

年代:1987

数据来源: Taylor

摘要:

DECONTAMINATION TECHNIQUES FOR BUILDINGS, STRUCTURES AND EQUIPMENT by M. P. Esposito, et. al. and R. Clark, et. al., 1987, published by Noyes Data Corp., Park Ridge, N. J., Clothback $36, 252 p plus XV.

ISSN:0360-1226    

DOI:10.1080/10934528709375372

出版商:Taylor & Francis Group    

年代:1987

数据来源: Taylor

ISSN:0360-1226    

DOI:10.1080/10934528709375365

出版商:Taylor & Francis Group    

年代:1987

数据来源: Taylor