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Cadmium contamination of soils and rice plants caused by zinc mining
| Content Provider | Scilit |
|---|---|
| Author | Takijima, Yasuo Katsumi, Futoshi Takezawa, Kyokuhei |
| Copyright Year | 1973 |
| Description | Characteristics of heavy metal contamination in paddy soils were discussed with respect to the soil and field conditions influencing the metal contents in rice. 1. In contaminated areas along the Kuzuryu River, the heavy metal contents of rice (expressed as the average of each area) were largely related to contents of paddy soils in 0.1 N HCl soluble forms as well as in total contents. A correlation was also found for the ratio of Cd to Zn in their soluble forms in the soil. 2. Within a given contaminated field plot, the heavy metal contents were not uniform, i.e: they were high around the irrigation inlet and decreased towards the outlet. However, these changes seemed to alter the Cd rice level much less than expected. 3. Soil pH and exchangeable Ca were negatively correlated with the Cd content of rice at a highly significant level. An un-drained field condition with a low soil Eh remarkably lowered the Cd content, particularly during rainy weather after the heading of the plant. 4. Based on a comparison of the extractable heavy metal contents in the waste ores and their contaminated soils, sulfide minerals derived from the mining appeared to be weathered more rapidly in the soil. With some extraction methods, the Cd origin was distinguished as the solubility of the metal in the soil among the waste products from the zinc mining and refinery. |
| Related Links | https://www.tandfonline.com/doi/pdf/10.1080/00380768.1973.10432586?needAccess=true |
| Ending Page | 182 |
| Page Count | 10 |
| Starting Page | 173 |
| ISSN | 00380768 |
| e-ISSN | 17470765 |
| DOI | 10.1080/00380768.1973.10432586 |
| Journal | Soil Science and Plant Nutrition |
| Issue Number | 3 |
| Volume Number | 19 |
| Language | English |
| Publisher | Informa UK Limited |
| Publisher Date | 1973-09-01 |
| Access Restriction | Open |
| Subject Keyword | Journal: Soil Science and Plant Nutrition Agricultural Engineering Contaminated Heavy Metal Metal Contents Rice Paddy Waste Contamination of Soils |
| Content Type | Text |
| Resource Type | Article |
| Subject | Soil Science Plant Science |
