References
- Aguilar , A. , Etchevers , J. D. and Castellanos , J. Z. 1987 . Análisis químico para evaluar la fertilidad del suelo Chapingo, Mexico : Sociedad Mexicana de la Ciencia del Suelo .
- Berna , J. L. , Ferrer , A. , Moreno , A. , Prats , D. and Bevia , F. R. 1989 . The fate of LAS in the environment . Tenside Surfactants Detergents , 27 : 101 – 107 .
- Brandt , K. K. , Hesselsoe , M. , Roislev , O. , Henriksen , K. and Sorensen , J. 2001 . Toxic effects of linear alkylbenzene sulphonate on metabolic activity, growth rate, and microcolony formation of Nitrosomonas and Nitrosospira strains . Applied and Environmental Microbiology , 67 : 2489 – 2498 .
- Bremmer , J. M. and Breeitenbeck , G. A. 1983 . A simple method for determination of ammonium in semimicro‐Kjeldahl analysis of solids and plant materials using a block digester . Communications in Soil Science and Plant Analysis , 14 : 905 – 913 .
- Comellas , L. , Portillo , J. L. and Vaquero , M. T. 1993 . Development of an analytical procedure to study linear alkylbenzenesulphonate (LAS) degradation in sewage sludge–amended soils . Journal of Chromatography A , 657 : 25 – 31 .
- De Wolf , W. and Feijtel , T. C.J. 1998 . Terrestrial risk assessment for LAS in sludge‐amended soils . Chemosphere , 36 : 1319 – 1343 .
- Draper , N. R. and Smith , H. 1998 . Applied Regression Analysis , 3rd ed. New York : Wiley .
- Elsgaard , L. , Petersen , S. O. and Debosz , K. 2000 . Effects and risk assessment of linear alkylbenzene sulphonates in a agricultural soil. 2: Effects on soil microbiology as influenced by sewage sludge and incubation time . Environmental Toxicology and Chemistry , 20 : 1664 – 1672 .
- Epstein , E. , Keane , D. B. and Meisinger , J. J. 1978 . Mineralization of nitrogen from sewage sludge and sludge compost . Journal of Environmental Quality , 7 : 217 – 221 .
- Hernández , T. , Moral , R. , Perez‐Espinosa , A. , Moreno‐Caselles , J. , Perez‐Murcia , M. D. and García , C. 2002 . Nitrogen mineralisation potential in calcareous soils amended with sewage sludge . Bioresource Technology , 83 : 213 – 219 .
- Holt , M. S. , Matthijs , E. and Waters , J. 1989 . The concentrations and fate of linear alkylbenzene sulphonate in sludge amended soils . Water Research , 23 : 749 – 759 .
- Keeney , D. R. and Nelson , D. W. 1982 . “ Nitrogen—inorganic forms ” . In Methods of Soil Analysis, Part 2: Chemical and Microbiological Properties , 2nd ed. 634 – 697 . Madison, Wisconsin : ASA‐SSSA .
- Knudsen , D. , Peterson , G. A. and Pratt , P. F. 1982 . “ Lithium, sodium and potassium ” . In Methods of Soil Analysis 225 – 246 . Madison, Wisconsin : ASA‐SSSA .
- McClung , G. and Frankenberg , W. T. 1985 . Soil nitrogen transformations as affected by salinity . Soil Science , 139 : 405 – 411 .
- Petersen , S. O. , Henriksen , K. , Mortensen , G. K. , Krogh , P. H. , Brandt , K. K. , Sorensen , J. , Madsen , T. , Petersen , J. and Gron , C. 2003 . Recycling of sewage sludge and household compost to arable land: Fate and effects of organic contaminants, and impact on soil fertility . Soil and Tillage Research , 72 : 139 – 152 .
- Ros , M. , Hernández , M. T. and García , C. 2003 . Soil microbial activity after restoration of a semiarid soil by organic amendments . Soil Biology and Biochemistry , 35 : 463 – 469 .
- Schönkaes , U. 1998 . LAS—a modern classic surfactant . Chimica Oggi , : 9 – 13 .
- Sempere , A. , Oliver , J. and Ramos , C. 1993 . Simple analysis of nitrate in soils by second derivative spectroscopy . Journal of Soil Science , 44 : 633 – 639 .
- Soil Survey Staff . 1998 . Keys to Soil Taxonomy washington, DC : USDA‐NRCS .
- Ward , T. E. and Larson , R. J. 1989 . Biodegradation kinetics of linear alkylbenzene sulphonates in sludge‐amended agricultural soils . Ecotoxicology and Environmental Safety , 17 : 119 – 130 .
- Wild , S. R. and Jones , K. C. 1992 . Organic chemicals entering agricultural soils in sewage sludges: screening for their potential to transfer to crop plants and livestock . Science of the Total Environmental , 119 : 85 – 119 .
- Yeomans , J. C. and Bremner , J. M. 1989 . A rapid and precise method for routine determination of organic carbon . Communications in Soil Science and Plant Analysis , 19 : 1467 – 1475 .