Human health risks from consuming cabbage (Brassica oleracea L. var. capitata) grown on wastewater irrigated soil

• Published in: International journal of phytoremediation Vol. 20; no. 10; pp. 1007 - 1016
• Main Authors: Galal, Tarek M., Khalafallah, Ahmed A., Elawa, Omar E., Hassan, Loutfy M.
• Format: Journal Article
• Language: English
• Published: United States Taylor & Francis 24.08.2018; Taylor & Francis Ltd
• Subjects: Agricultural pollution; Bioaccumulation; Biodegradation, Environmental; Brassica; Brassica oleracea; cabbage; Cadmium; Carbohydrates; Chromium; Egypt; Environmental health; Farms; Health hazards; Health risk assessment; Health risks; Heavy metals; Humans; Iron; Irrigation; Irrigation water; Lead; Leaves; Metal concentrations; Metals, Heavy - analysis; Nickel; Nutrients; Photosynthesis; Photosynthetic pigments; Physicochemical properties; Pigments; Pollution control; Proteins; Public health; Sediment pollution; Soil - chemistry; Soil analysis; Soil contamination; Soil investigations; Soil Pollutants - analysis; Soil pollution; Soil properties; Soil solution; Soil water; Stress concentration; Translocation; Waste Water - analysis; Wastewater; Wastewater irrigation; Wastewater pollution; Water pollution; Egypt; cabbage; translocation; Bioaccumulation; heavy metals; health hazards
• ISSN: 1522-6514; 1549-7879
• DOI: 10.1080/15226514.2018.1452186

The present study investigated the impact of cumulative irrigation with wastewater on the soil properties and, its health hazards on the consumers of cabbage plants at south Cairo Province, Egypt. Irrigation water, soil and cabbage plants were sample d from two polluted and other two unpolluted farms. The physicochemical properties of water and soil were analyzed and the growth parameters, as well as nutrients and heavy metals concentration in cabbage were investigated. In addition, the daily intake of metals (DIM) and health risk index (HRI) were estimated. Wastewater posed a decrease in the availability of N, P and K, but increases heavy metals in the soil solution. Cabbage stem and root lengths as well as the number of leaves and biomass were greatly reduced in the polluted farms. In addition, the photosynthetic pigments, carbohydrates and proteins were decreased under pollution stress. The concentration of most investigated metals in the leaves and roots were increased with translocation factor greater than one for Pb, Cd, As, Cr, Ni, Fe, and Co. The study revealed that the HRI exceeded one for Pb and Cd in polluted and unpolluted plants; and Fe in polluted ones. Irrigation with wastewater is not suitable for cabbage as it has health risks on humans due to accumulation of heavy metals. It worth noting that, the high ability of cabbage plants to accumulate Pb and Cd from both polluted and unpolluted soils should be taken into consideration when consuming this plant.