Zobrazeno 1 - 10
of 11
pro vyhledávání: '"H. J. Percival"'
Publikováno v:
European Journal of Soil Science. 51:35-41
Allophanic soils are known to accumulate organic matter, but the underlying mechanism is not well understood. Here we have investigated the sorption of humic acid (HA) by an allophanic clay in the presence of varied concentrations of either CaCl 2 or
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2816be7e71f8c344a5828079572b8564
https://doi.org/10.1046/j.1365-2389.2000.00295.x
https://doi.org/10.1046/j.1365-2389.2000.00295.x
Publikováno v:
European Journal of Soil Science. 50:309-316
Summary Measuring the specific surface area (SSA) of soils that contain much organic matter (OM) is problematic. The adsorption of p-nitrophenol (pNP) from xylene at room temperature yielded realistic values for the SSA of a wide range of clays, oxid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e73c166684c12651db35f2f134f7f72d
https://doi.org/10.1046/j.1365-2389.1999.00230.x
https://doi.org/10.1046/j.1365-2389.1999.00230.x
Publikováno v:
New Zealand Journal of Agricultural Research. 40:409-416
Some properties of surface mineral soils under Pinus radiata were compared with those under adjacent pasture at ten farm‐forestry sites in the Manawatu, New Zealand. None of the sites had received lime in the last 10 years. Generally, the soil samp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2819661baa00aa758b00bbc3d1c5e491
https://doi.org/10.1080/00288233.1997.9513262
https://doi.org/10.1080/00288233.1997.9513262
We have investigated the sorption of Cu and Cd by allophane and its complexes with a soil humic acid (HA), varying in carbon content from 14–123 g kg −1 . The sorption of Cu and Cd was measured at pH 5.0 and 5.5, using the batch technique and a s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f320e57fd8719054b54c7c312f21476e
https://doi.org/10.1016/s0166-2481(02)80042-3
https://doi.org/10.1016/s0166-2481(02)80042-3
Publikováno v:
Plant-Soil Interactions at Low pH: Principles and Management ISBN: 9789401040990
The concentration of monomeric Al in soil solution was estimated using both chrome-azurol-S (CAS) and pyrocatechol violet (60 sec) (PCV). In some samples the concentrations measured with PCV were greater than with CAS, suggesting PCV was less discrim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b1069ab86ea184019c4a5eae0afac4c1
https://doi.org/10.1007/978-94-011-0221-6_131
https://doi.org/10.1007/978-94-011-0221-6_131
Autor:
H. J. Percival
Publikováno v:
Soil Research. 41:1
The disposal of wastewater treatment sewage sludge onto agricultural land in New Zealand has led to the development of guidelines for the upper limit concentrations for total heavy metals in the underlying soil. However, those soil biological and bio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a3c4aade7b54e549b92c456ba2ef9e7
https://doi.org/10.1071/sr01061
https://doi.org/10.1071/sr01061
Publikováno v:
Soil Research. 41:613
The composition of the nematode assemblage in pasture plots that received sewage sludge amended with 4 rates of Cu, Ni, or Zn was assessed in 5 years; the highest rate of application of each metal was near the New Zealand regulatory limit. The activi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b5b8e44b18f859c42f09e99a80cfc478
https://doi.org/10.1071/sr02113
https://doi.org/10.1071/sr02113
Publikováno v:
Soil Research. 37:993
The soil solution chemistry of heavy metal amended soils is of great importance in assessing the bioavailability of heavy metals and their toxicity to the soil biota. Three contrasting soils were amended with Cd(II), Cu(II), Ni(II), Pb(II), Zn(II), a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cf656ed939789c9df04b8c699b7cb057
https://doi.org/10.1071/sr98055
https://doi.org/10.1071/sr98055
Publikováno v:
Journal of the American Ceramic Society. 57:57-61
The phases in the kaolinite-mullite reaction sequence were reexamined by ir absorption spectrophotometry. Particular attention was paid to the controversial intermediate Al-containing phases. Amorphous materials were leached from fired kaolinite samp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eab3a23987186ca21adfa978200f9e01
https://doi.org/10.1111/j.1151-2916.1974.tb10813.x
https://doi.org/10.1111/j.1151-2916.1974.tb10813.x
Publikováno v:
Chemischer Informationsdienst. 5
The phases in the kaolinite-mullite reaction sequence were reexamined by ir absorption spectrophotometry. Particular attention was paid to the controversial intermediate Al-containing phases. Amorphous materials were leached from fired kaolinite samp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0c3c50258833145081b58aac0b26c9cf
https://doi.org/10.1002/chin.197423046
https://doi.org/10.1002/chin.197423046