Microbial risk assessment of source-separated urine used in agriculture

A screening-level quantitative microbial risk assessment (QMRA) was undertaken for a urine separating sewerage system. Exposures evaluated included the handling of stored and unstored urine as well as consumption of crops fertilised with urine. Faecal cross-contamination was the source of risk and C...

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Veröffentlicht in:Waste management & research : the journal of the International Solid Wastes and Public Cleansing Association, ISWA. - 1991. - 20(2002), 2 vom: 10. Apr., Seite 150-61
1. Verfasser: Höglund, Caroline (VerfasserIn)
Weitere Verfasser: Stenström, Thor Axel, Ashbolt, Nicholas
Format: Aufsatz
Sprache:English
Veröffentlicht: 2002
Zugriff auf das übergeordnete Werk:Waste management & research : the journal of the International Solid Wastes and Public Cleansing Association, ISWA
Schlagworte:Journal Article Research Support, Non-U.S. Gov't
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520 |a A screening-level quantitative microbial risk assessment (QMRA) was undertaken for a urine separating sewerage system. Exposures evaluated included the handling of stored and unstored urine as well as consumption of crops fertilised with urine. Faecal cross-contamination was the source of risk and Campylobacter jejuni, Cryptosporidium parvum and rotavirus were the organisms chosen to represent different groups of enteric pathogens. Accidental ingestion of unstored urine implied a high risk (Pinf = 0.56) for infection from rotavirus whereas the risks for infection from bacteria and protozoa were approximately 1:10 000. After six months storage at 20 degrees C the risk for viral infections by accidental ingestion of 1 ml of urine was < 10(-3), the suggested acceptable risk benchmark. Ingestion of crops contaminated with urine resulted in risks of < 10(-5) after a 3-week (<10(-7) after 4 weeks) withholding period between fertilising and harvesting 
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700 1 |a Stenström, Thor Axel  |e verfasserin  |4 aut 
700 1 |a Ashbolt, Nicholas  |e verfasserin  |4 aut 
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