|
| Distribution characteristics and health risk assessment of heavy metals in a Panax notoginseng-soil system |
| Received:October 19, 2022 |
| View Full Text View/Add Comment Download reader |
| KeyWord:Panax notoginseng;soil;heavy metal;risk assessment |
| Author Name | Affiliation | E-mail | | WU Han | College of Resources and Environment, Yunnan Agricultural University, Kunming 650201, China | | | HE Zhongjun | College of Resources and Environment, Yunnan Agricultural University, Kunming 650201, China | hezhongjun@hotmail.com | | MENG Xi | College of Resources and Environment, Yunnan Agricultural University, Kunming 650201, China | | | LU Chunwei | College of Resources and Environment, Yunnan Agricultural University, Kunming 650201, China | | | LIANG Shewang | College of Agronomy and Biotechnology, Yunnan Agricultural University, Kunming 650201, China | |
|
| Hits: 689 |
| Download times: 644 |
| Abstract: |
| To explore the distribution characteristics of heavy metals in soil and plants of Panax notoginseng（Bruk）F. H. Chen in the planting area of Yunnan, and their impact on human health, this study performed random sampling and laboratory measurements in the Panax notoginseng production area. To assess soil pollution, the single pollution index and Nemero index methods were used, and the presence of heavy metals was evaluated for human health risks. We found that the rates of Cu, Zn, Cd, Pb, and As were excessive in the soil samples of Panax notoginseng planting area, where levels were 51.7%, 10.0%, 80.0%, 8.33%, and 65.0% above the standard limits, respectively. The pollution levels of the four areas were in the following order：Honghe Yuxi > Kunming Qujing > Wenshan > Dali Baoshan. The rates of Cd and As in the Panax notoginseng root tuber were 1.67% and 5.00% above the standard limits, respectively; however, Cu and Pb did not exceed standard limits. The rates of Cu, Cd, Pb, and As in the Panax notoginseng rhizome were 1.67%, 5.00%, 3.33%, and 1.67% above the standard limits, respectively. Noticeably, the health risk index（HI）of the Panax notoginseng root tuber and rhizome were greater than the standard limit, with averages of 1.20 and 2.33, respectively. Cu had the largest contribution to the HI out of all the metals. The comprehensive carcinogenic index（TCR）of the two parts was also higher than the standard limit, with averages of 2.21×10-4 and 2.39×10-4, respectively, and Cd had the maximum contribution. The HI and TCR of the rhizome were higher than that of the root tuber. These data indicate that the Panax notoginseng planting area suffers from a heavy metal pollution problem. |
|
|
|
