Effects of residual disinfectant on soil and lettuce crop irrigated with chlorinated water
| Autor: | Antonio Lonigro, G. Laera, N. Montemurro |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Irrigation
Environmental Engineering Tertiary treated wastewaters 0208 environmental biotechnology chemistry.chemical_element 02 engineering and technology 010501 environmental sciences 01 natural sciences chemistry.chemical_compound Tap water Chlorine Environmental Chemistry Organic matter Waste Management and Disposal 0105 earth and related environmental sciences chemistry.chemical_classification Chloramine EOX Vegetable crops Soil type Pollution 020801 environmental engineering chemistry Agronomy Bioaccumulation Soil water Environmental science Residual chlorine |
| Zdroj: | Science of the total environment (2017): 595–602. doi:10.1016/j.scitotenv.2017.01.083 info:cnr-pdr/source/autori:Lonigro, A.; Montemurro, N.; Laera, G./titolo:Effects of residual disinfectant on soil and lettuce crop irrigated with chlorinated water/doi:10.1016%2Fj.scitotenv.2017.01.083/rivista:Science of the total environment/anno:2017/pagina_da:595/pagina_a:602/intervallo_pagine:595–602/volume |
| ISSN: | 1879-1026 |
| DOI: | 10.1016/j.scitotenv.2017.01.083 |
| Popis: | The accidental or continuous release of residual chlorine in water reclaimed for irrigational purposes could compromise the crop yield and increase the load of toxic organo-halogenated compounds, posing additional risks for environment and human health. This study was aimed at assessing the consequences of using chlorinated water for irrigating lettuce crops grown in pots with two different types of soil. The results show that the accumulation of extractable organo-halogenated compounds (EOX) in soil, roots and leaves is directly related to the chlorine concentration in the irrigation water. The accumulation of EOX in sandy soils is not significant, while it reached up to 300% of the control in the silty-clay soil, demonstrating that the phenomenon is linked to the organic matter content in the soil. The accumulation of EOX in the soil appears to play a significant role in subsequent bioaccumulation in cultures irrigated with tap water (long term memory effect). Chloramines also demonstrated to have similar impacts as the free chlorine from hypochlorite. The consistent bioaccumulation of 400–700 μg Cl kg − 1 of EOX in the leaves of crops irrigated with just 0.2 mg Cl L − 1 of residual chlorine, as compared to levels below the detection limit of 75 μg Cl kg − 1 in the control crops, evidences the potential impact on food chain and human health. |
| Databáze: | OpenAIRE |
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