Assessing cadmium risk in wheat grain using soil threshold values
作者： Y. Safari , M.-A. Delavar , C. Zhang , Z. Noori , M. Rahmanian
DOI: 10.1007/S13762-017-1422-Z
关键词:
摘要: At present, the prior-established threshold values are widely used to classify contaminated agricultural soils with heavy metals under cultivation of a variety crops, without considering different sensitivity plants metals. Evaluation characteristics cadmium transfer from polluted calcareous soil cultivated wheat crop and assessment efficiency using reflect pollution risk by in Zanjan Zinc Town area at northwest Iran were goals this study. Totally, 65 topsoil (0–20 cm) corresponding samples an region proximity metallurgical factory collected analyzed for concentration. The results revealed that industrial activities strongly control distribution studied soils. Relatively high bioavailable contents (mean 0.77 mg kg−1) found soils, notwithstanding their alkalinity. It was observed just 22.5% around is covered concentration exceeding maximum permissible 5 mg kg−1, whereas grains 19 sampled higher than value 0.2 mg kg−1. Among these plants, total eight grown areas classified as unpolluted cadmium, based on value. seems misclassification mainly related uptake which should be considered.
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