4R.H Dowdy.et al.Trace metal auel mineral composition of milk and blood from goats fed silage produced on sludge-amended soil [J].Environmental Quality.1983,12 (4):473-478.
5C.Coombes.Agricultural utilization of a historic sewage/sludge farm Water Pollution Control [J].1985,84 (1):56-69.
6Langenkamp H,Marmo L. Workshop on harmonization of sampling and analysis for heavy metals,organic pollutants and pathogens in soil and sludge .
7Stylianou M A,,Inglezakis V J,Moustakas K G,et al.Improvement of the Quality of Sewage Sludge Compost by AddingNatural Clinoptilolite. Desalination . 2008